I just ordered a Pac-Nor 1-10twist in 6-284 for my Savage 12BVSS-S. I've decided to use the 87vmax, or Berger 88ld. I'm looking to get into the 3600fps range for long range varminting. If you had to pick one or two powders with the best combination of accuracy and velocity, which one's would you choose. I have IMR4350, R22, IMR4831. Is seems from other posts that H4350 and H4831 are recommended more often. Thanks