I have been have pressure isssues with my 700 in 260 doesn't seem like it wants more than 41 grains of 4350 with 40 grain bullet. I original checked the headspace with the firing pin in and the bolt would not close what so ever with no go guage. Today I checked it with firing pin out and the guage seated in the extractor and it closed easily so my question is firing pin in or out.
Gunsmithing Checking headspace rem 700
- Thread starter bschneiderheinze
- Start date
I've always checked headspace on my bolt guns with the bolt disassembled, granted I have never owned a 700.
Headspace should always be inspected with a bolt completely tore down/free of anything that is operated by a spring.
You are looking to qualify the distance between bolt face/datum line@the shoulder.
You are looking to qualify the distance between bolt face/datum line@the shoulder.
Always check HS with bolt stripped. Extractors and ejectors can add to false readings, resulting in excess HS, if you are cutting a chamber.
Now that you know the headspace appears to be OK :
"Today I checked it with firing pin out and the guage seated in the extractor and it closed easily so my question is firing pin in or out. "
You need to look a bit further/deeper and see what else may be amiss. You may have a bit of trash behind the ejector and that may be part of your hard close/open bolt.
Can you post a couple pics of the brass with the pressure signs?
Now that you know the headspace appears to be OK :
"Today I checked it with firing pin out and the guage seated in the extractor and it closed easily so my question is firing pin in or out. "
You need to look a bit further/deeper and see what else may be amiss. You may have a bit of trash behind the ejector and that may be part of your hard close/open bolt.
Can you post a couple pics of the brass with the pressure signs?
The NO-GO is ten thou longer than the GO. Did you say its now closing? That might be your brass problem.
This was a prefit aac 260 barrel I ended up taking it back upart and shaving about 2 thousandths of the recoil lug and not it passes both test.
41 grains of 4350 with a 40 grain bullet? This just doesn't seem right to me, what kind of bullets are they? Or did you mean to say 140grain bullet?
I dont know yet I have not got it to shoot well but maybe headspace was the issue I have 6 different kinds of bullets Im going to try in it all 140 class with r17 and 4350 I hope it shoots better. I ve heard good things about the barrels Im thinking I head a headspace issue
