1. B

    Range Report Twist Rates

    It's been a while since I've posted, but the last few times I saw the issue of barrel twist rate come up there never seems to be included a discussion about atmospheric conditions as effecting bullet stability. But the fact is that whether a given bullet is stable upon exiting the barrel...
  2. C

    H4831 and H4831SC Are the burn rates the same?

    In my area H4831 is becoming harder to find, but everybody seems to have H4831SC availiable. I have a 308 norma mag that loves H4831. But everybody tells me the two powders are the same. Can anyone give me rock hard evidence of this. I have a match this weekend and I don't need any surprises.