Thread: General approach to powder selection for a new load

I agree with what's been said. I look for the top three powders in the book with good case fill and speed and then check the sites on the net to verify if others are using the same powders with good results. One thing I'll say as a rule with normal barrel lengths the heavier for caliber projectiles the slower the powder works better. You might find 2213 may be better with 150 gn and heavier bullets. I was told and read h 1000(2217) was the bees knees in the 300wm and it is very good. When I started loading 212-225 bullets 2225( retumbo) was far better even though it wasn't popular it works better in my rifle( similar groups ,better es and no pressure signs). I'm loading 2217 in a mates 270 using 150 gn bullets and although he's happy with the groups I feel they are average. I believe either a change of projectile or maybe a slightly faster powder could be of benefit like you are using