So i'm looking at a new scope for my 16 inch AR. I have about decided on a Nikon with Bullet Drop Compensation. Here is the thread about it.. http://glocktalk.com/forums/showthread.php?t=1336591 So the guy there from Nikon Pro Staff tells me that the scope is calibrated for a 55 grain at 3240 fps. I don't own a chrono, although i would love to have one at some point. I do have a buddy who has one that i can probably get to shoot a few rounds through at some point. I typically load plinking loads, with 55 grain fmj's over 23.5 grains of H335. Is it feasible for me to reach that 3240 number safely? I know i am not even close to that now, even though i have never chronoed my loads. Also, assuming i work up closer to max, how much difference in drop would i expect to see if i am lower than the velocity that they have that scope calibrated for. I would just like to make my loads match the scope as well as I can make them.