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Origin 6.5 Creedmoor headspace question

justpassingthru

Sergeant of the Hide
Full Member
Minuteman
Apr 8, 2022
211
36
PA
Hi all, finished my first build, Origin 6.5 creed in a KRG Bravo with a proof competition prefit. Took it to the range and its a hammer, love it. 1/2 moa easy with 140 eldm. Anyways, my question is that used a set of Forster go/nogo gauges and they everything was good, but I did notice the go gauge was SLIGHTLY tight, as in, I could feel the slightest bit resistance. It closed, the gun shoots great, I just want to make sure everything is kosher. Would that indicate very little headspace with a round chambered?

IMG-2315.jpg
 
Thats how I set my barrel nut prefits on purpose.

Keep in mind that the individual gauges can very a bit as well; when set with the forster it may be too tight for a clymer go version and vice versa. Its just a ball park check to make sure its not too egregious. It passed so Id call it good to go.
 
Did you removed the firing pin assembly before testing?
Yes, I did...within a ziplock bag no less. Man that's a piece just asking to get lost.

Thanks for the replies, I just wanted to make sure I'm not missing anything. Now that I think of it, when I chambered the eldms I didn't notice the same resistance. Is that a logical train of thought or can you still chamber a round if you exceeded the headspace?
 
That would indicate zero headspace. Should be no issue unless you get some long factory ammo. If you handload, consider the tight headspace a blessing.
Would it matter if you handload? Couldnt you get slightly more case volume being closer to the no-go gauge? I'm honestly curious. Of course if you are ever going to shoot factory ammo, a tighter chamber I believe is the way to go.
 
Would it matter if you handload? Couldnt you get slightly more case volume being closer to the no-go gauge? I'm honestly curious. Of course if you are ever going to shoot factory ammo, a tighter chamber I believe is the way to go.
Id prefer the brass to move minimally on the first firing(and all subsequent firings) so they live a long time. As far as extra velocity, no. The opposite end of where you're at is only .004-.005 away. You’ll never notice it.