Get a PTG Gogauge. .043 Get green Plastigauge at the automotive store (it’s used for finding bearing clearances in engines) Clean the breach, chamber and bolt face well Put the Gogauge in and a piece of the Plastigauge on it muzzle down so it stays in place Close the bolt, then open and take out the Gogauge Measure the crush of the Plastigauge using the template gauge that is on the package Add that plus the .043 to get your headspace Accurate to .0005 when I’ve used it This makes it easy to choose shims. In my Remington 58X rifles I usually end up with .0445. (the Gogauge plus .0015 shim) I can get less but the bolt closes too hard with less clearance. This works for me. The Plastigauge goes a long way as you only use a small piece each time. No rifle disassembly required.
Just ordered my shims! Great video and blog 👍 Also my understanding is if while holding the trigger down you close the bolt the rifle is not cocked. Would this eliminate the spring pressure you’re talking about?
To measure the rim thickness. I zeroed my calipers on my fired 6.5 grendel case I put the 22lr nose first in my grendel brass. And the only thing sticking out was the rim of the 22. Then just measure against that. I guess any fired 6.5 caliber case would work.
Or do it the simple way, since you already have shims. Pick any 22 round and measure rim thickness. Disassemble the bolt and reassemble without firing pin, spring and extractors. Add the thinnest shim, chamber a round. Keep adding shim thickness until you start having resistance closing the bolt. Now add rim thickness to shim thickness and here is your headspace.
A half-assed demo. You really should've broken down the gun and done it right. If that wasn't worth your time, then viewing this is not worth our time.
Get a PTG Gogauge. .043
Get green Plastigauge at the automotive store (it’s used for finding bearing clearances in engines)
Clean the breach, chamber and bolt face well
Put the Gogauge in and a piece of the Plastigauge on it muzzle down so it stays in place
Close the bolt, then open and take out the Gogauge
Measure the crush of the Plastigauge using the template gauge that is on the package
Add that plus the .043 to get your headspace
Accurate to .0005 when I’ve used it
This makes it easy to choose shims. In my Remington 58X rifles I usually end up with .0445. (the Gogauge plus .0015 shim)
I can get less but the bolt closes too hard with less clearance.
This works for me. The Plastigauge goes a long way as you only use a small piece each time. No rifle disassembly required.
Good info
Thank you!
He is doing it the hard way. All you need are some go/no go gauges. I have several. .041, .043, .046 and .048". I used bolt shims to set mine at .043"
Just ordered my shims! Great video and blog 👍 Also my understanding is if while holding the trigger down you close the bolt the rifle is not cocked. Would this eliminate the spring pressure you’re talking about?
Great vid man
To measure the rim thickness.
I zeroed my calipers on my fired 6.5 grendel case
I put the 22lr nose first in my grendel brass. And the only thing sticking out was the rim of the 22. Then just measure against that.
I guess any fired 6.5 caliber case would work.
Or do it the simple way, since you already have shims. Pick any 22 round and measure rim thickness. Disassemble the bolt and reassemble without firing pin, spring and extractors. Add the thinnest shim, chamber a round. Keep adding shim thickness until you start having resistance closing the bolt. Now add rim thickness to shim thickness and here is your headspace.
Shouldn't the space be set out of the factory?
What depth gauge did you use?
A depth micrometer, I believe mine is made by Starrett
A half-assed demo. You really should've broken down the gun and done it right. If that wasn't worth your time, then viewing this is not worth our time.
Pay attention
Need to show. Sorry about the work you say you are a smith should be know problem.
You're right I'm being lazy and didn't want to do it again for a video