Squaring up your dies and trying #17 O-rings

[Zombie Steve]

I tried the o-rings... It really did help.

http://www.accurateshooter.com/technical-articles/reloading/o-rings-on-dies-may-reduce-run-out/


I have an RCBS seating die that's always been a problem child. I normally load .45 on a Dillon with a Dillon die (no problems whatsoever), but I loaded about 50 yesterday to help clear some crap off my bench, squared up the die on the single stage with some pennies, and had the O-ring under the lock ring. They loaded really straight, no shaving lead and no obvious bulging on one side vs the other. I was pretty happy. I'm betting it will help with leading as well.

I can't measure concentricity on a .45... the cartridge is too short. I did try the o-ring trick on some .223's the other day. The most runout I had on any of those was .0015" with most being well under .001".

[Great-Kazoo]

Before i went to a universal 22 depriming die, i used an o-ring under the nut of the depriming pin. I've read opinions regarding, floating vs rigid dies.
I ended up using this, http://www.uniquetek.com/site/696296/product/T1230 in combination with o-rings.
The o-rings are in use on my 45 acp tool head. That's been the only round given me issues in the past. One nice thing about this and other reloading forums. The tech tips from shooters, who look for ways to improve their reloading results, sharing with everyone else. While it may be something that doesn't apply to your situation. It does give you reference for down the road.





(http://www.uniquetek.com/site/696296/product/T1230)

[Zombie Steve]

Actually, I think my buddy's 550 has that toolhead kit, but it loaded them straight before. Nothing like the die I was using on my SS press, anyway. It was bugging the crap out of me.