That’s pretty poor, I was able to hit 4000 FPS with the 30 gr version out of a .223!The rule of thumb is 50fps per inch less barrel and unless you have a chronograph its guessing. The published manuals have tighter than saami spec barrels too. I tried to achieve 4400 fps with a 36 grn Barnes Varmint grenade in my CZ22-250 and I hit 3850 and that was it. My barrel was fairly well used at that point and had loaded the max charge shown in there manual number 4. I gave up and enjoyed shooting with the results I had. It is common for factory loads to not do what the box lists, be happy when they come close. Before handloading for all my needs the deer and pronghorn died just fine when I placed the shot with whatever factory ammo i had at the time.
