bullet runout

[britz]

I am trying to get the most out of my loads, just like the rest of you I'm sure. I made a homemade bullet runout "checker" or what ever you want to call it. It consists of two sets of cradles and a caliper set to measure the distance from the bullet to the base when the bullet is rotated. It is pretty crude, but I think it is doing the trick. I notices that some of my older hand loads had pretty bad runnout. Does anyone have some tips to decrease runnout. I use Redding dies now (plain jane's) but I always put pressure on them with the press ram before I tighten the collet. I use a Lee challenger press, it has some slop in the ram. Suggestions?
Thanks, Britz

[BLASERMAN]

You know there is a tool called a Bersin adjuster. It's about a little over 200 bucks . It has a micrometer on one side and a pusher screw on the other to correct run out . you buy it by the type of caliber you are shooting. you put your shell in rotate to see what the run out is and correct it with the adjuster screw.

[wapiti13]

Britz, I have a Bersin adjuster that I don't use because I changed calibers. What are you shooting? I would make you a deal if you could use the one I have. [img]/ubbthreads/images/graemlins/smile.gif[/img]

[britz]

I am shooting a 300 WSM primarily, but I will be shooting a 22-250 and 325 WSM. I would like to hear more about this product too. To be honest, I was hoping for some advise on whether or not the press has a lot to do w/ runnout or if anyone had any tricks they used to get rid of it. I have been told that when the ram is fully extended, any play will cause runnout, is this true?
Thanks for the replys.

[BLASERMAN]

I shoot a 7 mm stw and 300 wby , whats it fit.

Go to 6mmbr and vendor Directory under Kinnman Coustom
Products
there is a picture there.

[Gene]

I had a Bersin tool in 22ppc/6ppc for my tight neck BR guns. I sold it a year ago because it was time consuming to straighten bullets, and because I load to jamb (bullet touching lands). I figured bullets would straighten themselves when they were tight into lands. Achieving .000-.005" run out is near impossible and is not needed, especially in a hunting cartridge. Usually, run out is caused by necks not concentric. After 1-2 firings, this should straighten out. Try lightly turning necks before re-sizing. Next, I suggest Redding or the new Forster sizer bushing dies, and a good seater. Good shootin!

[BLASERMAN]

So what you are saying is start to seat bullet part way and turn shell 1/4 to 1/2 turn and finish seating to desired depth.