Elkrazy,

I've had 5 375 H&H rifles. 2 with 24" barrels, 1 with 23" barrel and 2 with 20" barrels. Both 20" rifles were the Sako AV. Shooting the same load in almost all, with the longer barrels the velocity averaged 2615 fps with a 300 gr. bullet, in the 23 " barrel it was 2530 fps. I did not chrono one 20" barrel, but the second actually liked a load with 1 & 1/2 gr. less powder that chrono'd 2473 fps. I personally could only tell increased muzzle blast when I didn't wear any hearing protection. Of all 5 I definitely liked the shorter barrel rifles. Good luck with your decision! Terry