ARRRRG!! Finally....after a few years, got all of my new 338 edge brass fireformed. Light load of h1000 behind 300 Berger. I was sooooo excited to try this brass. I had 7 cycles on my old Rem 300 Rum brass and , aside for a few loose(ish) primer pockets it is still OK. My old load was 92 H1000 @ 2840. Shot AWESOME. New brass gave me fits with PSI signs even though I was well below what I was using with the Rem brass. Ended up @ 85 H1000 at around 2700 to get them all Fireformed.
Now....I go to size the brass and almost every piece has a split neck!!! One firing!! As far as I know, within limits, of course, split necks have nothing to do with mild or hot loads. My thought are that there is something amiss with the brass.
I also load for a friend of mine.....same brass, same reamer, same BBL, same smith , 91 H1000 @ 2840 and most of his are split also.
It can't be the smith, reamer , or load because I ran 50 Rem brass 7x's with ZERO issues!!
Anyone??
Tod
Now....I go to size the brass and almost every piece has a split neck!!! One firing!! As far as I know, within limits, of course, split necks have nothing to do with mild or hot loads. My thought are that there is something amiss with the brass.
I also load for a friend of mine.....same brass, same reamer, same BBL, same smith , 91 H1000 @ 2840 and most of his are split also.
It can't be the smith, reamer , or load because I ran 50 Rem brass 7x's with ZERO issues!!
Anyone??
Tod