Les in Wyoming
Well-Known Member
I am sorting out my brass and started by measuring the over all length of the case. My once fired cases vary as much as .014. So then I went to a new bag of cases and found the difference to be the same. Most are all under the spec length (which I take to be the recommended limit length). I don't remember if I even messed with case length, but rather focused on cartridge overall length once the bullet was set. This is for a 300 WM and I like sub 1/2 MOA. The spec in the book is 2.620. So, these are my questions: 1) How critical is case length? 2) What tolerance of variation do you allow? 3) how much below the 2.620 should I consider too much?
My hunch right now it to trim them all to 2.610 and throw away all others. But if 2.605 is OK, it would save me a lot of brass. It all depends on how critical this is. I greatly appreciate input. Thanks. Les
My hunch right now it to trim them all to 2.610 and throw away all others. But if 2.605 is OK, it would save me a lot of brass. It all depends on how critical this is. I greatly appreciate input. Thanks. Les