I have always heard velocity is key to making TSX or the like work well. My son shot his first deer with Winchester 64g PP. They worked horribly. So what velocity would get them to work properly?
What cartridge was he shooting the 64s out of? What makes you say it worked horribly (lack of penetration, lack of expansion, shattered on bone, ???)? When I was hunting more with the .22-250 it was before I started handloading. I shot 55g remington softpoints because the were $9.99/box and they worked. Didn't own a chronograph but would guess they were going somewhere between 3400-3600 out of my 22" barrel.
The only deer I have seen shot with a 60-65 grain soft point (I cant remember if it was a Sierra 65 or a Winchester 62 as it was my buddy's rifle) was with a .223 out of a stubby AR. One and done on a young muley at 100 yards. I don't know the velocity but would be pretty mild I am sure.
