I bought a Weatherby Vanguard S2 Sub MOA model in .308 Win. This thing wont group for crap with my hand loads that i have worked up for my LR-308. The DPMS groups around 1" at 100yds with the ballistic tip ammo i load, and around 1.5-2" with the fmj plinkers. The Weatherby shoots the ballistic tips at best around 3" and the plinkers at 5" groups. WTF. I mean I understand different guns like different ammo, but damn, that much at 100 yds? Both are 24" barrels, the DPMS is 1:10 twist, the Weatherby is 1:12. The bullets are 150gr. Im just a bit confused I guees. I have bought 5-6 boxes of different .308 Win factory loads to test out the next time it is dry out. OAL of the hand loads are between 2.793-2.798" OAL of a Hornady superformance is 2.736-2.741" OAL of a Hornady TAP FPD is 2.797-2.801" OAL of a Winchester Supreme is 2.786-2.789" Any thoughts? I also bought 1 box of 168gr to see if maybe it doesnt like the light bullet?