Actually you will find that many people shooting the vanguard and most rifles chambered in 257 wby in general get better accuracy by actually seating that bullet fairly deep and not worrying about getting close to the rifling of the barrel. many have experienced best accuracy with the 100 tsx at 3.120 to 3.190 or any where in between. I load that bullet at 3.170 and get sub moa groups at 3520 fps using 72 gr RL22 and fed 215M primer. This in a Rem 700 rifle. I have a vanguard sub moa and I shoot the 110 accubond seated at 3.250 with 73.5 gr of RL25. it shoots good too. As always start your charge weights lower and work your way up to what your gun tolerates best. The OAL's I have stated were measured simply with dial calipers from base of brass to tip of bullet, not using the Stoney point (hornady) OAL gauge. Be sure to check your bullets for straightness after you seat them. The 100gr tsx is pretty pointy and some seating dies don't do a good job of setting them real straight.
Last edited by Dufur; 07/24/09.
