I saw 7 A-frames absolutely pancake in a buffalo. These were fired from a 9.3 Sisk, 286 grainers in the 2750 fps range. A few completely came apart. Partitions always seem to work the same way, expand on the front back to the partiton, then keep penetrating. If you are only hunting plains game, either will work.
Charlie
Damn! I thought I was the only one, and was never going to bring it up, however mine didn't pancake on buffalo, just some homemade testing media here at the farm, bullet was a 375 cal 300gr a-frame, it looks like a piece of mashed sugar baby candy, I still have it here somewhere, the 375 cal 300gr Partition, or any other weight/caliber Partition I tested/recovered from other game, NEVER done that, I could always count on at the very least a somewhat expanded 60% of initial weight solid plowing on through.
