New to the .30 BR

[jackie schmidt]

I was at the range today, shooting my '06 and 6ppc's. Just before dark, I pulled out my 30BR and put the same load of 34.5 grns of 4198, just touching the lands, Barts 112. Shot five, I then put a 6th shot in it just to be sure.

That load has stayed consistent through three range sessions.

http://www.chevelles.com/forums/attachment.php?attachmentid=232810&stc=1&d=1421634802

 

[abintx]

Dick, Jackie,

How much neck tension are you using on those 112s?

 

[Dick Grosbier]

Dick, Jackie,

How much neck tension are you using on those 112s?

I cut my necks for .002 to .0025" clearance on a loaded round. And I use a .321" bushing. This is a .330 nk. chamber.
Dick

 

[jackie schmidt]

.330 neck. Loaded round measures .328 at base of bullet. I'm using a .326 bushing. Not a lot of tension.

 

[adamsgt]

I cut my necks for .002 to .0025" clearance on a loaded round. And I use a .321" bushing. This is a .330 nk. chamber.
Dick

Let me try the math. .330-.308=.022-.002=.020/2=.010. So with a .010 neck thickness you're using a .321 bushing to size the neck? With a .325 bushing I'm having to use considerable force to seat the Berger 115". The Bergers are highly polished, I wonder if that's causing it? They mic .308 so that's not the problem. Maybe they need to leave the lube on?

 

[mks]

.330 neck. Loaded round measures .328 at base of bullet. I'm using a .326 bushing. Not a lot of tension.

Me, too. Maybe just a hair less clearance 0.3285", but the same bushing.

 

[Dick Grosbier]

So with a .010 neck thickness you're using a .321 bushing to size the neck? With a .325 bushing I'm having to use considerable force to seat the Berger 115".

My bullets are coated with Danzac and my cases are tumbled. If I try to reload a case that is not tumbled it feels like sandpaper when I seat them. My necks are less than .010 as my bullets are .3088. I use a typical straight line seater and a slightly heavy duty arbor press built by a good friend.

 

[adamsgt]

My bullets are coated with Danzac and my cases are tumbled. If I try to reload a case that is not tumbled it feels like sandpaper when I seat them. My necks are less than .010 as my bullets are .3088. I use a typical straight line seater and a slightly heavy duty arbor press built by a good friend.

First off, I'm still using brass that came with the gun. I've got a Hart arbor press coming tomorrow. Hope that's a little heavier duty than the Sinclair I've been using. It's definitely pricier.