The SST is a great projectile. My last hunt I used one, but had some 180 grain left from an elk hunt so I decided to use them for my deer hunt. I hit my deer in the neck at 300 yards, took out a couple vertebrae, he didn't even twitch. Same cartridge was used on a second deer, from about 15-20 yards away on a wounded deer running away at full speed. Hit him in the front shoulder, buddy saw blood and gore fly out the other side, lets just say they didn't get much meat out of the front quarters. I had some pictures of the exit wound on my deer, but someone reported them on photobucket so they got taken down. You will do just fine with that bullet and load.