Nimrodmar10
Well-Known Member
Today I changed out a barrel on a Impact Precision 737R with a new Proof Stainless 6 GT barrel. After torqueing the barrel to the action to 75 ft. lbs. I put a
Manson Go gauge in the chamber and closed the bolt. No problem. I then put the No-Go gauge in and the bolt closed easily. Problem! I put a .0015" piece of Scotch tape on the back of the No-Go gauge and the bolt would not close. I didn't force it, but there was resistance on the bolt handle. I then took the Go gauge and put 2 layers of Scotch tape (.003") on it. The bolt closed easily. When I added a third layer of Scotch tape (.0045") the bolt again would not close. I'm taking this to mean that I have approximately .004" of excess headspace.
I'm new to swapping prefit shouldered barrels. My question is, is this a problem?
I have not fired the barrel yet, but am thinking about it. I can call the gunshop where I purchased the barrel, but since it's Saturday, I guessing I won't be able to call Proof until Monday. What should I do, shoot it or return it?
TIA
Nimrodmar10
Manson Go gauge in the chamber and closed the bolt. No problem. I then put the No-Go gauge in and the bolt closed easily. Problem! I put a .0015" piece of Scotch tape on the back of the No-Go gauge and the bolt would not close. I didn't force it, but there was resistance on the bolt handle. I then took the Go gauge and put 2 layers of Scotch tape (.003") on it. The bolt closed easily. When I added a third layer of Scotch tape (.0045") the bolt again would not close. I'm taking this to mean that I have approximately .004" of excess headspace.
I'm new to swapping prefit shouldered barrels. My question is, is this a problem?
I have not fired the barrel yet, but am thinking about it. I can call the gunshop where I purchased the barrel, but since it's Saturday, I guessing I won't be able to call Proof until Monday. What should I do, shoot it or return it?
TIA
Nimrodmar10
