I just looked at Hodgdon's website and the sierra gameking isn't listed but the 85 grain barnes is. It looks like you might be able to get 3000 fps if you reload which I'm guessing you do. I read somewhere that you lose about 50 fps for every 2" you reduce your barrel length. I don't know if this goes for all calibers so it may not work with a .243. Their test barrel is a 24'' barrel so that is 6" longer then yours so you would be about 150 fps slower then their data. Almost every one of their loads at max is over 3150 fps. I know you didn't want to get to hot, but I don't know that you would be able to get that speed without getting up around max loads or close to it. I've had really good luck with H4895 out of my .243 but that is with a 65 grain V-max so I don't know about your application.
Last edited by Irish80prf; June 9, 2010 at 08:38 AM.
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