The time is almost near and I'm scratching my head. I dont know if I can afford to shoot an Allen Mag with the wildcat bullets regularly enough to practice and become proficient with it. I like to shoot around 100 rounds week out of my rifles. Anyways, I was talking to a friend and telling him about the big 7mm AM with the 200g at around 3250fps. He said, well doesn't your 300 RUM shoot 3200fps with a 200g bullet? I said it sure does, with 95g Retumbo &200g AB it shoots 3225fps and gave a 3 inch group at 525 yards. He said whats the real advantage then? I told him the BC of the bullet on the 7mm is way higher and thats what counts. However, I was thinking that since you can already achieve 3225fps out of a 26" bbl, If I got say a 28"or 30" and improved the RUM to a Tomahawk version, would it be likely to gain another 200fps?? I was thinking somewhere in the ballpark of at least 3400fps with a 200g bullet. Now those ballistics aren't so far behind the big Allen Mag, except for the wind. Just curious if this is logical thinking since the improved version should at least 100fps maybe 150fps, plus the added barrel length of 2-4 inches should give at least another 100fps. About how fast could I expect to shoot the big 240g SMK?? I was thinking hopefully 3100fps.