Started using the Roberts on varmints and deer back in the 70's. Have used a number of 100 gr bullets but most deer hunting has been done with hand loads and the 100,115,and 120 gr Partitions. They have all worked well.
Presently, I have a Kimber Select 257 and have been impressed with the factory 120 gr loads from federal and the 117 gr SST Hornady. Both shoot pretty well out to 300 yards, as far as I have tried it. I have never used the SST an an animal so really can't comment about it
