6BRX die help

[limbic]

I body size with 260 die with the depriming pin removed. Afterwards the brAss won't chamber. I then neck size with competition .267 bushing die. Unless I set the die up to cam over a bit I won't get the brass to chamber. This bumps the shoulder back a bit I guess? Is there a better way to bump the shoulder without camming over?

 

[rcw3]

From your posting I don't see where you are even bumping the shoulder at all (i.e all you are doing is hitting the base with a 260 Rem Die and neck sizing with another die). Did you forget a step or some info in your write up?

Robert Whitley

 

[limbic]

Fire formed brass chambers fine. After running it through the 260 FL die the brass no longer chambers so here is the problem. I then neck size the brass. It chambers but very very stiff. I adjust the dial on top of the die so the arm cams over center just a bit. I thought this was pushing the very edge of the shoulder back and allowing it to chamber.

My hypothesis was that when I FL size the brass it was pushing the shoulder forward just a bit.

Clear as mud? ;D

 

[flatlander]

Why are you using a 260 die in the first place? If the casehead isn't swelled too much to allow chambering after firing, then why use a 260 die? Using the 260 die will probably push the shoulder forward enough to make it difficult to chamber. You're not going to bump BRX shoulders in a 260 die - to get the shoulder bumped enough to make chambering easy, you're going to have to use a std. 6BR die - which is supposed to be one of the advantages of the BRX in the first place.

 

[limbic]

I was bumping the shoulder back with the redding bushing competition die. THe 260 die just FL sized the body and as a result pushed the shoulder forward. The only reason I use the 260 die is to make sure the cases are the same each time I reload. I didn't want to fine tune a load then realize that my brass needed to be FL resize and worry that the load may not work as well.

 

[MarkS]

limbic,

You will need to size the base first with the 260 die, then bump the shoulder with your 6BR die. Not the oter way. The 260 F/L will buckle the shoulder when it sizes the base, because nothing is contacting the shoulder. That is why the shoulder needs bumped after the f/l sizing. I have done this for years with a 7mm-08 die and a 6BR body and a wilson neck die.

Mark Schronce

 

[limbic]

So I need three separate dies for my brass? 260 for body sizing, then 6BR FL die for the shoulder, then the Redding bushing die for the neck. Will bumping the shoulders with the Redding bushing die damage the die?

I had been using the body die first then the neck die like you suggest Mark, I just was unclear on how to bump the shoulder back.

 

[DukeDuke]

You do need 3 separate dies. I do the shoulder bumping last.

 

[MarkS]

limbic,

You can bump and size the neck at the same time with your Comp die. I just used the wilson and a arbor press, because I had it, and I think it does a better job, but I would not buy it, in your case. I like the wilson's for seating also. I had a F/L custom bushing die made for my 6BRX $200.00, it works great, but if I had it to do over, I would buy bullets and do it the old way. I shot 3 IBS 600 yds records with the 3 die way.

Mark Schronce