Re: Who has a 6.5mm - 300 Win Mag? Need Pet load data.
I have one/had one, don't know if I still have it. I shoot the 264 STW mostly now instead which is about the same thing and I can give you loads for that if you are interested. They would be close enough for starters. These two require lots of slow burning powder to reach there potential and require a longer barrel than yours. Your rifle will not be able to outperform the 264 win mag by much because of this. I have clocked these two at over 60 fps gain per inch of barrel. You are going to achieve a lot of muzzle flash.
My 6.5-300 wby shot best with H-870 and H-570. The latter hasn't been made for about 30 years though. When I worked with it all the new stuff wasn't made yet. But the STW likes all the ones you mentioned and is about the same thing. I think with that short barrel you will need to go with a faster powder though for best performance.
Sorry, I thought you said 6.5-300 wby. I went back and saw that you said 6.5-300 win mag. You would do better with the 264 win mag than this wildcat in a short barrel. Same performance, better barrel life.
Predictions are difficult, especially when they involve the future
Last edited by Long Time Long Ranger; 12-03-2009 at 01:11 PM.