"...fourth worst is the .22-250 Ackley with a 55 gr. bullet at 3850 fps. The factory .22-250 gets 3680 fps, which means the Ackley only gains 4.6% over the factory round "
This stuff is always funny. Someone using quotes from somewhere to back up something that they otherwise don't know about. What matters is most accurate velocity, actual working load. Percentage gain? Only thing that matters is what's coming out of your gun, not theirs. My most accurate/fastest ever 50gr. 22-250 load is 300fps slower than my most accurate/fastest in an AI with 1" longer barrel.....both using the same powder and primer. Comes out to about a 7.7% gain.
