gzig5
Hot Rolled
- Joined
- May 10, 2005
- Location
- Milwaukee, WI
I'm setting up for a 22BR. I have standard FL (Forster & Redding) as well as Redding S-type neck and FL collet sizers. Maybe I'm doing something wrong. It is supposed to be simple to run the brass into a regular FL die and size the neck from 6mm to 22 in one swoop. I do that but the FL dies seem to oversize the brass and am getting what I consider to be excess neck runout (greater than 5-10 thou) even after running a mandrel down the neck after necking down. The collet dies won't size the neck all the way to the shoulder, but they do result in sub-.005" runnout. I can make a custom die to hold the neck bushings as one option. The other is to open the neck on one of the FL sizers from .240, which is way too small IMO, up to .250" which is about where the neck needs to be for a .254" chamber neck. Do I use a carbide boring bar, die grinder, or both? I think I have solid bars small enough and long enough to make the cuts. .005 per side seems like a lot to grind. If I can get the carbide bar to cut sufficiently, take .004" off and grind then lap/polish the rest? The final size is not critical IMO but the finish is.
I know there are guys who do this but time is getting critical and I'm not sure I can wait before I get the 400+ pieces of brass sized down and a light turn. Then I still need to do load development and only have four months before the spring ground squirrel trip. I won't have time or want to fireform all the brass before the trip so I hope to get it as straight as possible by stepping neck down from .267 to .258 and then through the .250 FL die.
I know there are guys who do this but time is getting critical and I'm not sure I can wait before I get the 400+ pieces of brass sized down and a light turn. Then I still need to do load development and only have four months before the spring ground squirrel trip. I won't have time or want to fireform all the brass before the trip so I hope to get it as straight as possible by stepping neck down from .267 to .258 and then through the .250 FL die.