After asking my last question about my Ruger Alaskan .44 magnum (2.5" barrel) and it's potency against brown bear, I was referred to Garrett Cartridges' web site. Which lead me to another question (of course). Their fps specs for 310 gr rounds are for 4" and 7.5" barrels, with the fps increasing with barrel length. My understanding is that the longer the barrel, the greater the muzzle velocity, and greater the speed of the projectile. I would interpret this to mean that a 2.5" barrel would be losing muzzle velocity and killing power. Does this mean I should step up to a larger grain bullet to compensate for the loss in velocity? Will a 330 gr round just be too much bullet for me to shoot effectively? I can hit 4/6 rounds in a pie plate sized grouping at about 15' with 320 grain rounds, fired in rapid succession, ok, maybe 3/6. (This example will probably crush any and all credibility as a shooter, but might provide some laughs, was just trying to provide some kind of benchmark).