Originally Posted by Taterhead
My math is correct. So is yours. You are using the mfg box flap velocity. drsjr1969 is using his chronographed number.
Try plugging the measured velocity of 1551 fps rather than the box flap velocity of 1500.
Hey guys, There is a video to go with every chronograph result I have and those 155 gr were sent to me for personal testing by Kevin Underwood to help test out a new load he was working on.
Awesome isn't it getting over 800 ft lbs from a completely stock G20.