So I should have done this when I first got the mold, but I was too interested in the hollow points to cast a flat point. I went back and mixed up an alloy I thought would hold together better, 50/50 (COWW/SOWW) and 5% added tin. I ran 2 HP pins, a CP, and a FP. Aluminum GC with .452 size, PC, and size again.
I didn't chrono any, but loaded them all at 30 grains LG for about 1900fps AMV and fired into water jugs from about 15 feet.
The FP was impressive! Mangled the first two jugs and was found in the 5th. My hornady scale died, so no weights, but looks like almost 100% weight retention.
The CP was similar to before, but seemed to hold together marginally better. I'm very curious as to the three weeks aged performance of this bullet. Found in the fourth jug.
The HP was also similar to before. Absolutely shredded two jugs, but didn't penetrate the third and was found on the ground. I don't have hope for this bullet at this velocity. I bet it would make an outstanding 45 colt Ruger only bullet.
After I do an aged bullet test I'll do some accuracy tests and have to cast more FP since I only ran one cavity. I'm a little bummed that after waiting so long (and with high hopes) for a 450BM HP mold, I end up having my best terminal ballistics with a flat point.