I don't think that a new lathe looks as good as that one does. I think I might have seen one dirt on it but probably not. Very nice explanation. And every ending was a new video!
So, the 312b-15 must be designed with the correct internal geometry to use the long 2.75” point. Just adding a long point to an indicator that isn’t specifically designed for it introduces the error (hysteresis) correct? Awesome video. It’s one thing to watch it, but another thing to fully understand all the details. Many thanks.
How well did this chambering job shoot? I realize there are a lot of other things that can affect accuracy. That was sure a beautiful chamber you showed us.
Thanks mucho for the video! Around the 16 minute mark, you started to talk about actions. Well, should I use a 700 or a clone, or spend the big bucks for some batty action? Is there much of an accuracy difference?
Quick question Mr. Thomas "Obi-Wan", is it necessary to tighten actions to 100 ft/lbs? I have heard many conflicting answers from builders I know or have known and also questioned the application of that torque pressure. I have also seen improper use of a torque wrench and wondered how much torque was actually applied. Does 15 ft/lbs actually make a difference 85 vs 100? Your thoughts?
Could you do a video on bedding scope bases....and mabey how to check that its inline with the bore...or am I big dealing things? But i dont like having to dial much windage in to get a zero. Is this something to worry about?
@speedygonzalez_x_files That would be a perfect starter project for wanabe padowans.....like me lol.... Would love to see how you bed a scope base and rings....
I didn't say I didn't like it! I use one everyday. Kevin brought his to see it in use and we just used his instead of mine. I have other's depending on the chamber length. Get one, you will love it! If you have one, carry on boss!
@@speedygonzalez_x_filesI have one -15 and a -3 with a 1.5” I use for 22LR chambers. I am going to get one of those Mahr that read to the side. Great video
Speedy do you not check that the lands/grooves are concentric with the freebore/neck/case just in front of the throat? You can have the freebore be concentric with the axis of the lathe because you're taking out enough material to cut out the error. If you put the indicator stylus right where if reaches full rifling depth in front of the lead you get to see how concentric the cut you made is with the bore itself. I should add that I appreciate all the content you do and appreciate being able to learn from someone with your pedigree.
I indicate in the grove where the freebore terminate and the throat begins, when done, I indicate at that same point, the freebore is less than 0.0005 deeper that that point and any movement of the barrel at that point would then be apparent.. I don't use the pilot, so as to not scratch up or ring the rifling, The last thing I would want to do it rotates the contact point in the area, I was trying to keep pristine.
@@speedygonzalez_x_files Thanks for the reply. Okay. I understand your point of view. Although I've never damaged the internal finish of a barrel with a clean indicator stylus spinning the chuck slowly by hand. I'll even put in a bore scope sometimes So I can see exactly when the stylus is centered on each land. I have dealt with some scuffing from pilots but I've always been able to easily buff it out and it's fairly rare with a properly sized and lubricated pilot bushing. I haven't tried using a solid reamer setup yet. Even though the FB is only 0.0005" over bullet diameter it's still deeper than the bottom of the grooves. I've seen a freebore/neck/rear of chamber measure zero and have the top of the lands as they reach full depth have nearly 0.001" TIR with barrels that have significant wandering near the chamber end. Im sure in 99% of cases your measurement would be the same in both places though. Cheers.
I use, Iscar 16ER 18 UN 1C228. Iscar 16ER 18 UN 1C250 & Iscar 16ER 18 UN 1C908, the number prior to the "UN" designates the thread pitch. The "IC number is the grade of carbide and types of material its typically used for. The IC228 is great for 416R barrel steel at low feeds and speeds. Used in the video.
what happens to the run-out when you don't have the stresses on the barrel that are induced from the way it is being held? you're flexing, i guess you'd say, into alignment.
Wherever the stylus tip touches the part is a coincident point. What you are actually after is the tangent point. Point of coincidence is wrong, tangent point is the correct terminology.
You could say we are both correct depending on how you look at a 360 degree arc. In "Metrology the science of measurement and its application." the definition is as follows: In the context of a circle, the "point of coincidence" refers to a single point where two different lines or curves intersect on the circle, essentially meaning they "touch" at that exact point; often, this is also called the "point of contact" when discussing a line tangent to a circle. Key points about the point of coincidence: Definition: When a line intersects a circle at only one point, that point is considered the point of coincidence or point of contact. Tangent line: When a line touches a circle at only one point, that line is called a tangent line, and the point of contact is the point of coincidence. Geometric significance: Understanding the point of coincidence is important in geometry for calculations related to tangents, chords, and angles within a circle. It is always good to present different views to our watcher's, Thanks for bringing it up boss! Very much appreciated and keep it up. Speedy
That was a pretty good video, and I can think of nothing to criticize. Maybe the lathe is a little too clean (makes me feel inadequate and all) but other than that.... What are you using for a camera? I'm wanting to upgrade for my own recordings. WH
I am just using my iPhone 16, still researching cameras to do my bigger videos. I may just buy a few used iPhone's. Their video quality looks amazing to me boss.
@@speedygonzalez_x_files Believe it or not, you are conversing with one of the few men in the country who does not have a cell phone! I agree that the picture quality is very good and I may have to break down and move into the 21st century.
@@WillHenrysWorkshop-gunsmith The camera's on the phone a pretty amazing, I don't feel you will regret the the use of a camera the subs as a phone as well! Try that Sony!
@FullSendPrecision so towards the end of the video when the indicator touches the base end of the go-gage and the barrel shoulder was that to check headspace measurement or target measurement? I thought speedy said "headspace" how do you initially establish your target measurement dimension length? Are you taking a measurement from the reciever face down to the boltface locked in battery?
@@cfranklin7450 At the end with the indicator, he was seeing what the headspace of the finished barrel is. The target measurement is .883 in this case. How do we get .883? Put the bolt in the action, put the recoil lug on. Measure with a depth mic from the front of the recoil lug to the bolt face. You want the barrel headspace to be a thou or so over
I haven’t used bushings for years and got nothing but shit from other smiths. There just not needed if you drill and bore out most your chamber true to your dialed In throat.
Depends on how he dialed it in. You can only pick two points to have perfectly concentric and neither the bore or the barrel themselves are straight when you are talking in thousandths. If you dial in two spots near the chamber to make sure where the bullet enters the lands is as concentric as possible with the bore then you will have run out at the muzzle on good barrels it can be anywhere from 0.005" to 0.030". Why? Because the bore wanders and just because you'd made it concentric at the chamber doesn't mean it will be at the muzzle. In fact I've never seen one that was. Some people dial in the throat and then the muzzle. In that case you'd have the same you started with when you decided it was good enough. I prefer two points at the chamber end because the bullet doesn't care where the muzzle is when it leaves the case. It only cares if it's entering the rifling as straight as possible. It's going to have to travel the winding path of the bore whether or not you dialed in the muzzle. Both ways can give you rifles that shoot lights out. If you dial it in my way you'll get an idea of how straight the barrel is to the bore.
@@FullSendPrecision You can't dial in an arc or curve and make it straight? Your error is greater at distance regardless the little error you may see between a couple of inches in the chamber. Why you have to clock the barrel in after you chamber. Tolerance between pilot and bore? Tolerance between pilot and range rod? Is pilot concentric? Is the range rod ground concentric and is it co-axially aligned with what? Stacked tolerances kill to!
I watch all kinds of mechanical shows on guns, cars, and houses. You almost never see women on these shows. Imagine if men went on strike for 45 days. No electricity, no running water, no fixing. 😊
@@speedygonzalez_x_files I need to know more about no pilot. I have 1000's of dollars in pilots. I also need to know how to mod my JGS holder please. I graduated TSJC in 2002 and am always looking for better ways. I use a TBAS chuck to dial zero in length of chamber area. I dial, drill, bore and then cut chamber, still using pilot. I would really love to take a class from you. Thanks Happy New Year, God Bless
@@20020x I'm not speedy, but I think boring before chambering eliminates the need for a pilot because the reamer is going to center up on and follow the hole you bored.
@@20020x Come on down boss! You graduated 5 years too soon... We could have had fun together while I was teaching there. Boots Obermeyer, one of the legend's of the cut rifled barrel world, when asked "What's the ideal pilot size for you barrel's?" replied "One Thousandth 0.001 under bore size! I you ever use one larger in my barrel, I'll never make you another!" So I threw mine all away!
Hmmm... I STILL think I am your greatest student ever!!! :) Even Erik and Matt agree. Just ask them... Nice video, buddy. Thanks for putting these videos up online. See you soon.
Precision at its finest
Every time I watch a speedy video I end up buying something. That indicator is sweet! - I quit using pilots almost as soon as I started doing barrels.
I'd like to know more about the no pilot thing.
Thank you sir, awesome content. Learning how to do my own barrels is at the top of my goals list for the foreseeable future!
I don't think that a new lathe looks as good as that one does. I think I might have seen one dirt on it but probably not. Very nice explanation. And every ending was a new video!
Thank you Speedy, you have a blessed new year as well.
Very fine work
Excellent video, keep them coming
Impressive!
Great video
Christmas came a little late, but a Speedy video is worth the wait. Have a great year!
Excellent job. Very impressed.
Dang Speedy! No wonder my barrels shoot so well! Great video thanks!!👏
Always a fun day with the Speedy man👍👍👍👍
Happy New Year Speedy.
I’d pay double to get a barrel chambered by this guy. Thanks!!
Awesome video, please explain how you got the headspace measurement off the reamer drawing pls. Which values do you use to calculate. 🙏🏻
Nice work ..
So, the 312b-15 must be designed with the correct internal geometry to use the long 2.75” point. Just adding a long point to an indicator that isn’t specifically designed for it introduces the error (hysteresis) correct? Awesome video. It’s one thing to watch it, but another thing to fully understand all the details. Many thanks.
...merry New Year.....
Awesome
How well did this chambering job shoot? I realize there are a lot of other things that can affect accuracy.
That was sure a beautiful chamber you showed us.
Thanks mucho for the video! Around the 16 minute mark, you started to talk about actions. Well, should I use a 700 or a clone, or spend the big bucks for some batty action? Is there much of an accuracy difference?
0.883 was measured from the front of the action down to the bolt face with a depth mic?
Quick question Mr. Thomas "Obi-Wan", is it necessary to tighten actions to 100 ft/lbs? I have heard many conflicting answers from builders I know or have known and also questioned the application of that torque pressure. I have also seen improper use of a torque wrench and wondered how much torque was actually applied. Does 15 ft/lbs actually make a difference 85 vs 100? Your thoughts?
Could you do a video on bedding scope bases....and mabey how to check that its inline with the bore...or am I big dealing things?
But i dont like having to dial much windage in to get a zero.
Is this something to worry about?
I would not go to the effort of bedding the rings if it didn't matter....EVERYTHING MATTERS!!!!!
@speedygonzalez_x_files
That would be a perfect starter project for wanabe padowans.....like me lol....
Would love to see how you bed a scope base and rings....
In you don’t like, the Interapid 312-15 what do you use?
I didn't say I didn't like it! I use one everyday. Kevin brought his to see it in use and we just used his instead of mine. I have other's depending on the chamber length. Get one, you will love it! If you have one, carry on boss!
@@speedygonzalez_x_filesI have one -15 and a -3 with a 1.5” I use for 22LR chambers. I am going to get one of those Mahr that read to the side. Great video
Speedy do you not check that the lands/grooves are concentric with the freebore/neck/case just in front of the throat? You can have the freebore be concentric with the axis of the lathe because you're taking out enough material to cut out the error. If you put the indicator stylus right where if reaches full rifling depth in front of the lead you get to see how concentric the cut you made is with the bore itself. I should add that I appreciate all the content you do and appreciate being able to learn from someone with your pedigree.
I indicate in the grove where the freebore terminate and the throat begins, when done, I indicate at that same point, the freebore is less than 0.0005 deeper that that point and any movement of the barrel at that point would then be apparent.. I don't use the pilot, so as to not scratch up or ring the rifling, The last thing I would want to do it rotates the contact point in the area, I was trying to keep pristine.
@@speedygonzalez_x_files Thanks for the reply. Okay. I understand your point of view. Although I've never damaged the internal finish of a barrel with a clean indicator stylus spinning the chuck slowly by hand. I'll even put in a bore scope sometimes So I can see exactly when the stylus is centered on each land. I have dealt with some scuffing from pilots but I've always been able to easily buff it out and it's fairly rare with a properly sized and lubricated pilot bushing. I haven't tried using a solid reamer setup yet.
Even though the FB is only 0.0005" over bullet diameter it's still deeper than the bottom of the grooves. I've seen a freebore/neck/rear of chamber measure zero and have the top of the lands as they reach full depth have nearly 0.001" TIR with barrels that have significant wandering near the chamber end. Im sure in 99% of cases your measurement would be the same in both places though. Cheers.
How about ? how the Bore is Indexed from end to end ?
Speedy, what specific insert are you using for threading?
I use, Iscar 16ER 18 UN 1C228. Iscar 16ER 18 UN 1C250 & Iscar 16ER 18 UN 1C908, the number prior to the "UN" designates the thread pitch. The "IC number is the grade of carbide and types of material its typically used for. The IC228 is great for 416R barrel steel at low feeds and speeds. Used in the video.
what happens to the run-out when you don't have the stresses on the barrel that are induced from the way it is being held? you're flexing, i guess you'd say, into alignment.
Wherever the stylus tip touches the part is a coincident point.
What you are actually after is the tangent point.
Point of coincidence is wrong, tangent point is the correct terminology.
You could say we are both correct depending on how you look at a 360 degree arc. In "Metrology the science of measurement and its application." the definition is as follows:
In the context of a circle, the "point of coincidence" refers to a single point where two different lines or curves intersect on the circle, essentially meaning they "touch" at that exact point; often, this is also called the "point of contact" when discussing a line tangent to a circle.
Key points about the point of coincidence:
Definition:
When a line intersects a circle at only one point, that point is considered the point of coincidence or point of contact.
Tangent line:
When a line touches a circle at only one point, that line is called a tangent line, and the point of contact is the point of coincidence.
Geometric significance:
Understanding the point of coincidence is important in geometry for calculations related to tangents, chords, and angles within a circle.
It is always good to present different views to our watcher's, Thanks for bringing it up boss! Very much appreciated and keep it up.
Speedy
That was a pretty good video, and I can think of nothing to criticize. Maybe the lathe is a little too clean (makes me feel inadequate and all) but other than that.... What are you using for a camera? I'm wanting to upgrade for my own recordings. WH
I am just using my iPhone 16, still researching cameras to do my bigger videos. I may just buy a few used iPhone's. Their video quality looks amazing to me boss.
@@speedygonzalez_x_files Believe it or not, you are conversing with one of the few men in the country who does not have a cell phone! I agree that the picture quality is very good and I may have to break down and move into the 21st century.
@@WillHenrysWorkshop-gunsmith The camera's on the phone a pretty amazing, I don't feel you will regret the the use of a camera the subs as a phone as well! Try that Sony!
Do you do minimum spec chambers ?
What is the correlation between the headspace and shoulder being the same length? Or is the measurement something else that im not following?
Headspace IS the distance between the shoulder and the back of the gauge.
To get the target measurement, you measure from the front of the recoil lug, to the face of the bolt.
@@FullSendPrecision Your on point boss! Good way to start 2025! That deserves an AT-A-BOY!
@FullSendPrecision so towards the end of the video when the indicator touches the base end of the go-gage and the barrel shoulder was that to check headspace measurement or target measurement? I thought speedy said "headspace" how do you initially establish your target measurement dimension length? Are you taking a measurement from the reciever face down to the boltface locked in battery?
@@cfranklin7450 At the end with the indicator, he was seeing what the headspace of the finished barrel is. The target measurement is .883 in this case.
How do we get .883?
Put the bolt in the action, put the recoil lug on. Measure with a depth mic from the front of the recoil lug to the bolt face. You want the barrel headspace to be a thou or so over
I haven’t used bushings for years and got nothing but shit from other smiths. There just not needed if you drill and bore out most your chamber true to your dialed In throat.
If you were to check the muzzle end at this point, what would be the acceptable runout?
zero
Depends on how he dialed it in. You can only pick two points to have perfectly concentric and neither the bore or the barrel themselves are straight when you are talking in thousandths. If you dial in two spots near the chamber to make sure where the bullet enters the lands is as concentric as possible with the bore then you will have run out at the muzzle on good barrels it can be anywhere from 0.005" to 0.030". Why? Because the bore wanders and just because you'd made it concentric at the chamber doesn't mean it will be at the muzzle. In fact I've never seen one that was.
Some people dial in the throat and then the muzzle. In that case you'd have the same you started with when you decided it was good enough.
I prefer two points at the chamber end because the bullet doesn't care where the muzzle is when it leaves the case. It only cares if it's entering the rifling as straight as possible. It's going to have to travel the winding path of the bore whether or not you dialed in the muzzle.
Both ways can give you rifles that shoot lights out. If you dial it in my way you'll get an idea of how straight the barrel is to the bore.
@ I’m with you. I want to be aligned with the bore.
Same as close to ZERO as humanly possible boss!
@@FullSendPrecision You can't dial in an arc or curve and make it straight? Your error is greater at distance regardless the little error you may see between a couple of inches in the chamber. Why you have to clock the barrel in after you chamber.
Tolerance between pilot and bore?
Tolerance between pilot and range rod?
Is pilot concentric?
Is the range rod ground concentric and is it co-axially aligned with what?
Stacked tolerances kill to!
I watch all kinds of mechanical shows on guns, cars, and houses. You almost never see women on these shows. Imagine if men went on strike for 45 days. No electricity, no running water, no fixing. 😊
Do you use a rigged reamer holder
No Sir, a modded JGS Holder.
I think you meant "rigid"
@@speedygonzalez_x_files I need to know more about no pilot. I have 1000's of dollars in pilots. I also need to know how to mod my JGS holder please. I graduated TSJC in 2002 and am always looking for better ways. I use a TBAS chuck to dial zero in length of chamber area. I dial, drill, bore and then cut chamber, still using pilot. I would really love to take a class from you. Thanks Happy New Year, God Bless
@@20020x I'm not speedy, but I think boring before chambering eliminates the need for a pilot because the reamer is going to center up on and follow the hole you bored.
@@20020x Come on down boss! You graduated 5 years too soon... We could have had fun together while I was teaching there. Boots Obermeyer, one of the legend's of the cut rifled barrel world, when asked "What's the ideal pilot size for you barrel's?" replied "One Thousandth 0.001 under bore size! I you ever use one larger in my barrel, I'll never make you another!"
So I threw mine all away!
Speedy, how can I contact you?
Hmmm... I STILL think I am your greatest student ever!!! :) Even Erik and Matt agree. Just ask them...
Nice video, buddy. Thanks for putting these videos up online. See you soon.
You are one of my favorite’s, but don’t quit your day job, boss! Love ya man!
F16, Boelube and no pilot!? * gasp *
That is a pretty funny mix! Glad you were paying attention! That deserves an AT-A-BOY!
Same as close to ZERO as humanly possible boss!
I'll take your Sharp lathe because you don't use it anymore > Thanks
I appreciate the memes 🫡