I have a Winchester model 70 classic sporter chambered in 300wby I got in 1998. I am planning on going with an hs precision stock, bedding the recoil lug and throwing a 4-16x50 vortex viper hs lr on it. I'm building this for hunting purposes expecting to shoot either the 190 lr accubond or the tipped tsx. Is it realistic to hope to stretch this thing out to 800-1000yds if needed? Is there anything else I could do to improve the rifle?