Headspace. ? On 6.5cm proof ss zermatt origin prefit
- Reloading Depot
- 51 Replies
My proof research SS 6.5 creedmoor zermatt origin action prefit barrel gave me a headspace/datum line measurement of 1.534" on fireformed brass yet my brand new alpha brass had a measurement of 1.5345" and im not sure if this is usual? this is my first bolt gun and new brass typically has a much shorter headspace measurement than once fired. After installing the barrel i checked the go which it closed on and no go which is failed to close on so the barrel passed them but it just seems a little strange that my once fired has the same datum line measurement as brand new brass thats usually on the shorter side of datum line measuremens. Can anyone explain if this is normal. If not is it bad? I contacted proof and they basically said it's fine but idk it feels strange to me. What is usually what ppl experience in fireformed brass datum line headspacing growth from new brass?
(Picture is of my rifle)
(Picture is of my rifle)