For the last few years i have been trying to cope with disability as a result of a spinal injury at the hands of a jiu-jitsu instructor by building, as I could afford, a .375 Chey Tac Rifle. I was originally going for a .408 CT, but Barney Lawton (that's how long ago it was) had just started the 375 program and I was hooked by his entusiasm. After some glitches along the way and having the whole project saved by Dave Kiff and Pacific Tool and Gauge who corrected a problem with the original Lawton cocking piece, I'm finally at the point of final checks, and today I'm checking the headspace.
The rifle is built on a Lawton 8000 action with a Lawton barrel. I had Lawton thread and chamber the barrel. I only have a GO gauge from PTG, and here is what I found
1) Bolt closes smoothly on GO gauge.
2) Bolt closes smoothly on GO gauge +.002" but with very slight drag
3) Bolt locks at 2o'clock position on Go Gauge +.006"
All checks made with fire controls removed.
At this point I took a round of DTC ammo loaded with a 352 grain Cutting Edge bullet. The action closed smoothly with slight drag. I used a Sharpie marker to mark the shoulder, neck, and bullet around the ogive; the round was inserted in the chamber and the bolt cycled 3 times and withdrawn; despite my attempts not to, I still dragged the bullet along the ejection port, so disregard any marks on the bullet, as I did not see any that looked like land marks, and circular marks are clearly evident on the shoulder.
At this point, I would appreciate any input on what I've presented regarding appropriateness of the headspace; thanks in advance.
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The rifle is built on a Lawton 8000 action with a Lawton barrel. I had Lawton thread and chamber the barrel. I only have a GO gauge from PTG, and here is what I found
1) Bolt closes smoothly on GO gauge.
2) Bolt closes smoothly on GO gauge +.002" but with very slight drag
3) Bolt locks at 2o'clock position on Go Gauge +.006"
All checks made with fire controls removed.
At this point I took a round of DTC ammo loaded with a 352 grain Cutting Edge bullet. The action closed smoothly with slight drag. I used a Sharpie marker to mark the shoulder, neck, and bullet around the ogive; the round was inserted in the chamber and the bolt cycled 3 times and withdrawn; despite my attempts not to, I still dragged the bullet along the ejection port, so disregard any marks on the bullet, as I did not see any that looked like land marks, and circular marks are clearly evident on the shoulder.
At this point, I would appreciate any input on what I've presented regarding appropriateness of the headspace; thanks in advance.
Sent from my iPad using Tapatalk HD
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