6.5x284 case dimension

[chet]

I take a fired case out of my rifle it measures .477 at the full diameter just by the shoulder, when I size the case it takes it down to .473, is .004 too much clearance, will I be working the brass too much, by keep taking it back to .473 if I unscrew the die to a point where the diameter is about where I want it, like .475, I am too far away for a shoulder bump, and the primer will not fully decap, I know I can adjust the primer pin to knock out the primer, but If I have to bump the shoulder, I am back to the .473 dimension, any solutions other than maybe calling Forest and have them grind out .002 up near the neck so when I do a full size I have be at .475 at the neck area.

Chet


PS If any shooters have any fired 6.5x284 cases, can you measure the diameter at the end of the case near the shoulder and see if they are smaller than my fired cases.

 

[dennisinaz]

If you don't want to size it that much, you can get a bushing die and a bump die? Will Forster hone the body?

 

[queen_stick]

Chet:

just measured my fired case from yesterday's range trip. This is the 5th reload on the brass, I neck sized only for the first 4 loadings, then started getting a stiff bolt. I body sized and bumped the shoulders. This is the first load after the body/bump sizing. my case measures .476 just below the shoulder.

I also measured a once-fired case, which measures the exact same as the 5x-fired, .476.

I have a Redding body die, and measured a case that is 4x-fired, but unfired since running it through the body die. it measures the same as yours, .473.

It sounds like a lot of clearance, and overworking of the brass, but I guess that's why a lot of people say to neck size only until you need the body sized,start getting a stiff bolt). Although, I've heard that a lot of BR guys are full-length sizing every time, so maybe that clearance/working of the brass isn't bad?

Hopefully you get someone with some experience to chime in with their opinion on .004 clearance. I'm curious my self.

 

[dennisinaz]

Measure a piece of new brass at the base and a one-fired, un-sized piece for an eye-opener!