DIY Case forming dies?

[acme_labs]

Rcbs sells .30 Mauser case forming dies for over 300 bones. Can I take a sizing die($45) and cut the top off of it instead?

 

[acme_labs]

Anyone ever done this?

 

[artabr]

I'd just buy some brass. You are looking at a lot of expense and time forming pistol brass. I have a rifle that I form brass for and it's a pain in the ass, and all I'm doing is shortening a bottleneck case.
Starline sell .30 Mauser brass. It's a little pricey, but you have to ask yourself what kind of price do you put on your time. 500 cases at under $90 bucks ain't a bad trade off.

http://www.starlinebrass.com/index.php?cPath=1&osCsid=da1aa3eef25074352f9e751d2ad8359c


In post #3 in the link below is a description of what you will need to do. Of course you'll have to use the correct die (7.63 Mauser not 7.62 x 25) but there it is. You'll have to play around with your cut length to come up with the proper finshed case length.
Thats a lot of work and you still have to buy the correct reamer to turn your case necks down to the correct thickness if you don't happen to have a lathe handy.

http://www.milsurps.com/showthread.php?t=3883


Art