Issue with 30 carbine die.

[sevt_chevelle]

I've got an issue with a 30 carbine die, its a Dillon type trim die made for the Rt1200 trimmer. Anyways, its made by CH4D, it sizes the case as you trim it in the same step.

The problem that I have is the die forms a shoulder around the case about 1/2" down from the case mouth. You can definitely feel the shoulder on the case. When you look inside the die you can see a ridge along the die.
I have NEVER seen a piece of 30 carbine with such a shoulder formed in it. I ran a piece of brass through a RCBS die, which forms no shoulder, and compared some measurements. I measured down by the extractor groove, about half way up the case and at the case mouth, I get the same measurements for the CH4D die and the RCBS die minus the shoulder from the CH die.

Am came across this die from a fellow reloader who posts on a few forums and asked if he had the same issue as I was with my die, no he was not.

I contacted CH4D and all they said was see attached SAMMI drawings.

Thoughts opinions as I am not overly pleased. Thanks...Eric

The CH die brass on the left, rcbs brass on the right.

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CH brass on bottom rcbs on top

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[Walkalong]

I have never looked at a SAMMI drawing for .30 Carine. Very interesting. All the .30 Carbine ammo I have seen hasn't had a shoulder, just a long taper.

I doubt it will hurt anything, but I suppose you could resize with the RCBS sizer, although that would add a step.

I would call them back and try to get straight answers to more questions. "see attached SAMMI drawings" isn't a straight answer.

 

[rondog]

Interesting. Can't see that hurting anything though. Might grip the bullet tighter, and would no doubt fire-form out when fired.

 

[rcmodel]

I kinda like it!

Much better case neck tension then you can normally get with the tapered case.

rc

 

[cheygriz]

It's not right, but it won't hurt anything..