Range day! Who-hoo!
Finally, I've had the loads done for 5 days, dr. appts. other bothers. Weather was great for the last 3 days, UN-seasonably warm for central Wi this time of year.
BUT the results were dismal. I'm going to cut to the chase, just post the pictures of expanded bullets in order of the velocity they were fired at. My take on them is they're way too fragile for the velocities I was running. Which is at the low end of what Berry's recommended. Disintegration was typical star burst shrapnel in the expansion media.
This was fired by my CZ 75B, 5.0 grains of power pistol, all loads was with PP. Velocity was 1108 fps. It took a lot of digging to find all the fragments, most of them when weighed resulted in 124 grains.
5.7 PP yielded 1203 fps for the above fragments.
This shows penetration and expansion cavity of the above 1203 fps and where the main chunk or base of the bullet came to rest. 3 - 4 inches of penetration was all any of them went.
So here we see what happens when we go to 357 sig velocities, 1403 pushed by-------well I won't list the powder charge as it's above max in the Hornady book for their XTP bullet. If you're really mad at the bad guy, want him to spend a long time in surgery,(if he makes it there) while the surgeon tries to get the chunks of bullet out, then shoot him with one of these.
Accuracy was terrible with the CZ. Best group @ 25 yards was around 4" while being shot over the CED chrono. My Glock with the after market barrel was slightly better, then the over max shot a nice tight group. I can scan the targets if any bodies interested.