02-08-2020, 02:45 PM
What barrel length do you have? If it is something under a 16" then maybe those velocities would be in the ball park but if 16" or longer they are way off. Like has been said you powder charges are Way too low. It has been my experience that Speer's load data for the 120 Gold Dot is WAY CONSERVITAVE. I did a work up with IMR 8208 with the 120 GD in two ARs. One has a 20" BCA barrel the other an 18" Oden Works. I used Hornady cases. CCI 450s and found that 28 grs was max before slight ejector swipes started to show on a couple cases pressure. 28 grs is where both of my rifles wanted to shoot this bullet the best. 20" average 2550 fps 18" 2500 fps this is from a number of range trips and weather conditions.