I can say I have never seen any proof that any one is more accurate than the other. I will say that I played heck with the accu-stock, and would prefer something with a wood stock, or good plastic. I felt that there was some bedding issues with this gun. The factory plastic stock are just plain all together horrible. On groups 1/2 inch 5 shoot 100 groups should be no problem. I shot a few promising groups in my review of the 10 PC that measured in the .3 area. I found that it shot everything I feed it equally well, from 52 gr SMK, to 68 gr, to 77 gr SMK's.