I am loading for a Remington Sendero in 7MM Mag, 26 in barrel and would like to hear about preferred loads. I have tried some 150 Grain Nosler bullets and N160 Vihtvouri powder but having some problems with stablization at 100 yards. The bullets do ok at 200 yards and are better at 300 yards. Any suggestions would be greatly appreciated. I have used this combination of powder, bullets, primers in other 7 Mags with good results but not with this rifle.