Originally Posted by
15meter
I think by the time it 06 cases are trimmed this short, they are in essence a straight walled wildcat. May be where they are getting the headspacing on the mouth. But that is just a guess on my part.
Quote Originally Posted by mpkunz View Post
.30-'06 cases or any other cases in that family such as .270 cases, are trimmed to 1.900" and loaded with 44 cal bullets. 460 grain gas checked solid lead from a custom LEE mould, loaded subsonic to 980 fps and suppressed are as quiet as my air powered brad nailer, and they penetrate concrete blocks. Jacketed 180 grainers max out at 2,870 fps. Cases are sized with my '06 FL die, flares and bullet seating done with 44 magnum dies.
I see this is several years old but just came across this. My brother and I did this same thing but case length is 1.74”. My problem is after the initial firing the cases become shorter because the case has to slightly expand to chamber. My brother made an expander to expand the case before sizing and trimming but they still lose 6 to 7 thousandths on the first firing. This becomes an issue when it’s headspacing off the case mouth. I’m just curious how you dealt with this or if you had this problem.