357 max pierced primers

[clearwater]

I had a second chance to shoot the SB1 357 mag/ now max.

The first time around I got a couple of pierced primers with 38 special factory loads (Fiochi) so
I pulled all the bullets (125 grain jacketed) and replace with 125 grain cast. No more pierced primers
from that batch yet.

Then tried 357 Max handloads. 180 Hornady xtp with winchester small rifle primers and alliant 2400.
When I got to 14 grains (1400 fps) I got a pierced primer. Then I got another at 15 grains (1565 fps).

What has been found to be the problem in the past with pierced primers and the 357 on shotgun frames?

[quickdtoo]

Yup, it's a known problem, switch primers, Rem 7½, Fed 205M,  CCI 450 or BR4 all have thicker cups.

Tim

http://www.jamescalhoon.com/primers_and_pressure.php

[mechanic]

I've had NO pierced primers since I went to CCI small rifle.  The only problem is I have to segregate ammo, as my handgun will not always detonate the rifle primers.....no real biggie.....

[v8r]

My .357 did that straight out of the box when I purchased it several years ago with several different brands of factory loads.I just sent it back to H&r and they fixed it right up and also threw in a free trigger job!