Sunday I made it to my range with several rounds with 220 and 180 grain bullets loaded over 8.7 to 10 grains of 4227. My biggest concern was that the bullets stabilized and didn't keyhole the target. The 10" barrel is and 8 twist and every round fired made a perfectly round hole in the target at the 25 yards starting point. Velocities were from 887 on the low end to 1039fps max. Accuracy at 25 yards was almost one ragged hole and at 100 yards they opened up to about 3". I'm really satisfied with the progress so far. The powder burns clean, cycled the action with every shot and locked the bolt back on the last shot of the pistol action. The suppressor does a wonderful job that translates into a noisy clacking of the bolt. Last night I ordered some Hornady Sub X 190gr bullets since I doubt that bullets that I've been using will open up much, if any, at low velocities. Today I will cut more .223 brass and convert it to 300BLK, prep it and be ready to load when the new projectiles arrive.
