30x47 Lapua with n135
- Thread starter turkeynut
- Start date
James Lederer
New member
42.5 grains, no jam or jump. Move the bullet out of the case in .003" increments, you shouldn't have to move it far.
R.G. Robinett
"That'll never work."
If you have it, don't overlook N-133; and/or H-322 (Extreme) - especially, the latter.
RG
R.G. Robinett
"That'll never work."
I'd begin lower (about 39.5 Gr.) and work up, until either "bug-hole, or, pressure dictates the stopping point: H-322(Extreme) usually has a WIDE precision window (about 2.0 Gr.) once it falls together. The last Lot of H-322(X) i purchased (about 2007), and continue to use, is extremely good over temps from just above freezing, to over 100*F, and at a charge weight which I will not provide: with another Lot, it could prove catastrophic. With both 133 and 322, one can get enough powder into the cases to create extreme pressure! In my experience, both, with the lighter weight bullets, produce more consistent precision than N-135, etc.. Both tend to shoot "loose groups" at lower pressure, then, "come together, and stay together", over a 1.5-2.0 grain range, just below charge the weight which develops excessive pressure. RG