I have a 300wsm factory rifle with a 26" barrel and It'll push 208 amaxs to 2850. It comes really close to running with the 7wsm but not quite. Now if I was building one, I'd get it throated for the 230gr berger. A long throated 300 should run equal to to the 7 and it would have better barrel life. As for capability at 1000...with custom built wsm's, start thinking 2000!
A .300WSM will never equal a 7, given equal progression of bullets for both. The 7WSM should push the new 195 to 2850-2900fps with a 26" barrel and the right powder, and even the 230 Berger can't keep the .300WSM competitive with that...
You're probably right. As far as recoil and pure performance the 7 wins, barrel life and component availabiltity 300 wins. Both are very easy to tune.
Norma makes 270wsm brass that you could neck up to 284 right? So what components availability are we talking about?
Or you could just use Winchester 7 wsm, I have found the quality of their brass to be great. A friend of mine and I bought 500 a couple of years ago, went through and culled(only about 10 or so), then weight sorted and split them between us. About 100 are still untouched and some I have around 6 firings on with no issues, the nice part...improved shoulder, I have only had to trim once after the initial trimming to uniform all the brass.