I shot a 367-1x out of a possible 500. Rifle was my franken-AR, here:
Cavalry Arms Mk-II lower with Del-Ton A2 1:9 twist upper, Hogue free-float handguard and home-brew front sling swivel. USGI cotton sling.
I tried to run the course with a Center-Of-Mass (COM) hold on the target. I typically try to shoot all my rifles with a COM sight picture, since I feel that a 6 o'clock hold is dependent on angular hold-under rather than absolute distance hold-under. If you hold 3 minutes low at 200 yards, that's 6 inches. If you hold 3 minutes low at 500 yards, that's 15 inches. An NRA bull is always 6 minutes of angle, so at 200 yards it is 12 inches, while at 500 yards it is 30 inches. If you shoot with a 3MOA hold-under, your POI will always be 3MOA high... which is 6 inches at 200 yards and 15 inches at 500 yards. Your sight picture changes on a "real" target, as a result of that. A 20" human torso (a threat) will require a belly-button hold at 200 yards, and a mid-thigh hold at 500. (Obviously sight adjustments come into play here, too).
So, I've decided next time I will bow to the game, and shoot a 6 o'clock hold.
I also noticed that I have a hard time differentiating the front sight from the target, even though I focus on the front sight. I need more contrast between the two, and I need the front sight to be smaller. So, I ordered a 0.050" match front sight and I also will blacken my front sight with a match or lighter for higher contrast in the future.
Next, I will be shooting some inexpensive 55gr reloads in the future for 200y reduced courses of fire. The 55's shoot better than the retail 62gr ammo I shot last weekend... vertical stringing was less. More consistent case length, powder measurement and crimp strength resulted in more consistent velocity, I think.
Finally, I will be going back to my Turner synthetic 1907-style sling. I definitely noticed some heart-pulse in my sight picture with the GI cotton sling, when looped up. I was even using a padded cloth shooting jacket. I see less of that with the 1907 sling due to the loop/keeper arrangement.
I was hoping to break 400 this last weekend, but I'll just have to break 400 next time out.
