Re: 338 edge barrel lenght?
Im using a 30in. I get 2795fps ( 300SMK) with a load that is shooting in the mid- high .2s. I have shot loads at 2890fps, but my best load has ES of 8fps, and the accuracy is great. Its been shooting 4.6in to 5.5in 3 shot groups at 1000yrds no BS. It makes me look good, and is fun to shoot. I dont think you will gain 100fps with 2in more barrel. I would think more like 40-60fps. Thats about what you will usually see.