100gr charge worked for J. Shockey. Although the 300gr SST's made the animals dead, I just did'nt care for their core separation, thats just my opinion. I don't need to shoot 150gr charge either to fill my freezer, my brother swears by his 150gr charge(3 T7 pellets) & a Barnes 290gr TMZ.
My loads have proven that they are adequate, because it's worked for me could be totally different to someone else.
I should add too that my cast boolits are not pure lead.