I believe the 7mm Rem is shorter and tapered differently. The .300 has maybe 10% more powder capacity.
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We are sending a 208 AMAX over 3,000 fps and a 225 ELD over 2900fps with 300WM. Gotta wonder what this bad boy will do and can it beat those ballistics. It is interesting. I favor heavy bullets and longer barrel life but it sounds cool.
PB
7mm Practical
http://www.ballisticstudies.com/Know...Practical.html
http://www.ballisticstudies.com/site...0for%20web.jpg
7mm Remington Magnum at left, Practical on right.
I always thought the .270 Winchester was the worlds best non-belted magnum. ;)
Looks like Bigedp51 beat me to it. Thanks for posting that link. I prob should have posted it in my original post.