I am about to start working up some loads for a new f-tr rifle. I have on hand Sierra 155 palmas, 155 scenars, 175 smk, 178 amax, 185 scenar, 185 vld hybrid, 190 smk, and 208 amax. The selection is giving me a headache. The rifle has a 27", 10 twist barrel. I would like to narrow my selection...