Originally Posted by phorwath
is there a term for breaking the barrel in and having it burnt out at the same time?
The closest term I could think of is overbore fun
The worst ending is I'll have to buy a new barrel. I'll go up in caliber to 7mm or 300 RUM is the barrel life if the 25 RUM life is too short-lived.
Here's some follow-up information for those interested. This has application to the RUM shooters - could save someone a little money.
I studied my Redding 388 RUM competition bushing style neck sizing die for a while tonight, and then used it to neck size a 7mm RUM case, simply by replacing my .362" neck bushing (for my 338 Edge) with a .310" neck bushing suitable for the 7mm RUM case. You simply need to back off the micrometer adjustment to ensure the neck bushing only sizes the neck, and doesn't impact and deform the case shoulder. With my 25 RUM, I'll have to back off the micrometer adjustment even more, because the smaller the neck size, the longer the shoulder, and the shoulder of the case will protrude up through the sliding sleeve even farther. This just means the 25 RUM neck could be deformed even more than with the 7mm RUM case if precaution isn't taken to back off the micrometer adjustment.
: The 338 RUM Redding competition bushing style neck sizing die can also be used to neck size 300 RUM, 7mm RUM, and even 25 RUM cases. When you size down more than one caliber, such as when going from 338 down to 7mm RUM or 25 RUM, the case shoulder will likely protrude up through the sliding sleeve to the point that the case neck could be driven up into the neck bushing and deform the case shoulder after sizing down the entire neck of the case. In order to size the neck only, you'll have to back off the micrometer adjustment to ensure the case shoulder isn't driven up into contact with the neck bushing.
So I'm going to order the appropriate neck bushings for the 25 RUM. $10 for a neck bushing is a lot more cost effective than purchasing an entirely new competition bushing style neck sizing die. If you happen to own a Redding 338 RUM competition bushing style neck sizing die, you can use that same die to bushing neck size the 300 RUM or the 7mm RUM. If you own the 300 RUM bushing style neck sizing die, you can also use that die to neck size 7mm RUM brass simply by obtaining and installing the proper sized neck bushings for the smaller calibers.
Thanks for the input guys.