:cb2: Hey Scout. We're in the process of moving, and I haven't been checking the forum like I usually do.
The best factory round in my M57 is the Winchester 240-gr. Platinum Tips. The Winchester 175-gr. Silvertips were a close second. I haven't killed anything other than paper with my M57, but since shot placement is the key, I'm sure either one of these will do the job quite nicely. I've got mine and two speedloaders loaded with the Platinum Tips, and unless they prove ineffective somehow, I'm sticking with them.