Am I the only one realizing the orbital rotation + equal pressure at every single angle being needed for this to be an accurate crown around the full diameter of the barrel? 🤔
If you think about it, you are right. But it works. First time i saw it being done i was sceptical, but it actually worked. I machine the crown on the katje and after that i use this. Knocks of the micro burr the League leaves. Works like a threath if your muzzle end is square.
@@janik1691 sorry dude but the crown is extremely importanen on on every gun made crown means bad groups do the math study the science same goes for the rifling in the barrel if its shit then no crown is going to help you out
Excellent video man! I’ve heard about this but it’s the 1st time I’ve seen it done. You are full of good air rifle info. 20 minute video packed full of great info. No wasted time! Great job man! If I didn’t like to work on my own air rifle projects , I’d definitely sub the work out to you. You definitely understand the detail and fine points🫡
a countersink is to harsh and can leave cuts also hard to control on top of that even with a lathe you need a smooth surface not sharp edges i use to have a machine shop and i used many things on the lathe that some worked really great others like your countersink bit even did not work always left a cut edge and sharp insides and you dont want that to happen you also dont want to deep either it really requires very little work but it has to be perfect as possible for the best results even sense i adopted this to use its worked perfect every time with even just a simple hand drill ..
No lapping paist, there are other household mild abrasives that will work, tooth paste , Dutch cleanser or comet cleanser with a little water to make it a paste.
@@KevinMillard68 Agreed.. good video! I should have said "if needed or wanted" I have performed this numourios times because it's conveiant and fast, I have a lathe, but that's a half day effort with disasembly and set up, set, I use valve lapping paist due to time savings, typically crown a bbl in under 5 min, have tried comet and Dutch cleanser also just out of curiosity and if works well. Cheers.
I’m having a hard time finding which screw I need to use for a 22lr rifle can anyone help me out? I saw the ones you showed in the video for a 22 but they looked like different sizes help would be much appreciated🙏
So I have a AK74 without any crown at all, is it really necessary to lap the end of the barrel square before lapping in the crown? It's from the factory and looks fine, I just don't see it being completely necessary... I really don't think .001 variation is going to make a big difference, all I'm trying to do is allow the gas an escape from behind the bullet.. I'm not building a Swiss time piece... Right? Curious what your opinion is as a machinist. I'm an apprentice machinist so I do have some metal working experience, but nothing compared to a seasoned vet like yourself.
in short the better the crown will help with accuracy if your crown is off then it makes it vey hard to site in a gun, i have worked on hundreds of guns and recrowned more then i care to remember but the difference is night and day if you do the job right for me top accuracy of the gun is everything then again you also have to know how to shoot each gun you use as well but with out a good crown youll have alot of problems
All guns have a crown. It's the corner of the muzzle and the bore. If it is clean and consistent all the way around it shouldn't matter if it's tapered at 11°, 45°, 90° or rounded. Facing (squaring)the muzzle is probably not necessary for a factory muzzle but if you cut down a barrel, it's a good idea.
I can do any gun barrel I want to do , I have never done a 9mm yet but you still have to size up the screw head properly and to achive the crown you want to have
@@KevinMillard68 So I just have to get a screw with a head larger than the inside dia of the barrel to ream it. Not actually a true 11 degree crown is necessary I take it. OK, thanks for the reply.
witch craft like its gong to matter of course its not done things like this for years and never a problem but you have one and thats ok you do your thiing ill do mine i have experience at doing this alot and never had a problem ..
Am I the only one realizing the orbital rotation + equal pressure at every single angle being needed for this to be an accurate crown around the full diameter of the barrel? 🤔
you dont seem to know as much as you think you do but i will say this the work i do is done right and works perfect
If you think about it, you are right.
But it works. First time i saw it being done i was sceptical, but it actually worked. I machine the crown on the katje and after that i use this. Knocks of the micro burr the League leaves. Works like a threath if your muzzle end is square.
@@KevinMillard68 When the whole gun is built like that, poor crowning doesnt matter that much anymore..
@@janik1691 sorry dude but the crown is extremely importanen on on every gun made crown means bad groups do the math study the science same goes for the rifling in the barrel if its shit then no crown is going to help you out
@@KevinMillard68 Thats why my crownings are made precise with a lathe.
Excellent video man! I’ve heard about this but it’s the 1st time I’ve seen it done. You are full of good air rifle info.
20 minute video packed full of great info. No wasted time!
Great job man!
If I didn’t like to work on my own air rifle projects , I’d definitely sub the work out to you.
You definitely understand the detail and fine points🫡
👍
Why not a countersink bit and some valve grinding paste.
a countersink is to harsh and can leave cuts also hard to control on top of that even with a lathe you need a smooth surface not sharp edges i use to have a machine shop and i used many things on the lathe that some worked really great others like your countersink bit even did not work always left a cut edge and sharp insides and you dont want that to happen you also dont want to deep either it really requires very little work but it has to be perfect as possible for the best results even sense i adopted this to use its worked perfect every time with even just a simple hand drill ..
No lapping paist, there are other household mild abrasives that will work, tooth paste , Dutch cleanser or comet cleanser with a little water to make it a paste.
no needed
@@KevinMillard68 Agreed.. good video! I should have said "if needed or wanted" I have performed this numourios times because it's conveiant and fast, I have a lathe, but that's a half day effort with disasembly and set up, set, I use valve lapping paist due to time savings, typically crown a bbl in under 5 min, have tried comet and Dutch cleanser also just out of curiosity and if works well. Cheers.
Add some valve grinding compound! Work much better
that is an opinion in which you are intitled to we dont all think or feel the same on that idea
Using some JB Bore paste works very well with the screw.
thanks
@@KevinMillard68 What screw could be used for a 50-70 Rolling Block?
@@D33Lux a carriage bolt.
This is great stuff man! I'm curious though as to why you chose the material brass.
brass will not tear up the steel in the barrel and it also acts as a polisher at same time
I’m having a hard time finding which screw I need to use for a 22lr rifle can anyone help me out? I saw the ones you showed in the video for a 22 but they looked like different sizes help would be much appreciated🙏
best i can say is to buy a few different sizies and the one the overlaps but not to much will work out for you
@@KevinMillard68 cool thanks for responding so fast
So I have a AK74 without any crown at all, is it really necessary to lap the end of the barrel square before lapping in the crown? It's from the factory and looks fine, I just don't see it being completely necessary... I really don't think .001 variation is going to make a big difference, all I'm trying to do is allow the gas an escape from behind the bullet.. I'm not building a Swiss time piece... Right? Curious what your opinion is as a machinist. I'm an apprentice machinist so I do have some metal working experience, but nothing compared to a seasoned vet like yourself.
in short the better the crown will help with accuracy if your crown is off then it makes it vey hard to site in a gun, i have worked on hundreds of guns and recrowned more then i care to remember but the difference is night and day if you do the job right for me top accuracy of the gun is everything then again you also have to know how to shoot each gun you use as well but with out a good crown youll have alot of problems
All guns have a crown. It's the corner of the muzzle and the bore. If it is clean and consistent all the way around it shouldn't matter if it's tapered at 11°, 45°, 90° or rounded.
Facing (squaring)the muzzle is probably not necessary for a factory muzzle but if you cut down a barrel, it's a good idea.
Such a helpful video. Thanks for taking the time to share.
your welcome happy to help
Good stuff, love all the great info you put out.
Much appreciated!
What size screw head would you use on a 9mm handgun barrel? Or can you do a 9mm?
I can do any gun barrel I want to do , I have never done a 9mm yet but you still have to size up the screw head properly and to achive the crown you want to have
@@KevinMillard68 So I just have to get a screw with a head larger than the inside dia of the barrel to ream it. Not actually a true 11 degree crown is necessary I take it. OK, thanks for the reply.
Would stainless steel barrel make a difference/
nope
You know I'm very concerned about my barrel, I'm willing to spend .45 cents, or less if possible. Lol
Thanks Brother!
your most welcome
Why brass? Wouldn’t stainless work better?
brass is softer Stainless steel will cut it up and screw it up
@@KevinMillard68 👍
What size screw for .45 cal
dont know youll have to size that up your self like i did for the .177 and .22 cal
You think 8 32 will work on crowning a 22 250 rem
my theroy is this try it and if works then cool if not try something else
Littarly what I did had to use my commen senset
.223 for powder burners, .216 - .218 for air (as a general rule of thumb)
:)
(looking for a brass screw) Thanks maaaate!
:) your welcome
Really can't believe you're doing this without any lapping /cutting paste!....common sense should have told you that!
witch craft like its gong to matter of course its not done things like this for years and never a problem but you have one and thats ok you do your thiing ill do mine i have experience at doing this alot and never had a problem ..
how do you get your barrel cut so strait?
used a hack saw first then flatten it down carefully with a belt sander iam also a machinist and dont need a lathe for everything
Slowly is the key,
yup
Sweet
thanks