Who has two thumbs and a big smile on his face? This guy!
It just doesn’t seem to matter what I feed this rifle. It’s only ever made 1 group over an inch and the rest have been closer to half an inch. This isn’t just 3-shot groups. It’s 10-shot groups rapid fire or slow fire and 5-shot groups and 3-shot groups. It’s just a laser beam. Just look at these groups. Those are all 10-shot groups!
Left to right 43.5, 44, 44.5, 45.5, then down one for the 45 grain load. The few flyers were all called and were the shooter’s fault.
The barrel came from Columbia River Arms, formerly Black Hole Weaponry and it’s a gem. It’s a 26 inch 8 twist on an MTU contour. The chamber is quite tight netting necks that are exactly .243″ inside diameter after firing, meaning that my brass doesn’t grow much and working of the necks is minimal. I set it up for zero headspace too so the brass should last a good long time with the Ackley case’s propensity for not stretching (especially not stretching like a .243Win is prone to doing.) If you want a drop in that’s just a laser beam, you need to call up Columbia River arms and have them cut you a barrel based on their .243AI reamer. I’ve never seen anything like this in a drop in barrel. Carl Caudle has a bunch more reamers that are equally nice. All it takes is a phone call and a credit card.
I got my Ackley loads dialed in. Started with .080 jump on the 108 grain ELD-M bullets. Started with a 43.5 grain charge of RL-23 and moved up in half-grain increments to 45.5 grains. Never showed any pressure signs and the velocities were just slightly above where I’d set as a goal. The big deal was a definite signal that the case likes to be full. SD’s were up around 35fps at the bottom but at 45.5 grains everything trimmed out and I landed with 5fps SD’s across a 10 round string with a group .6″ across done rapid fire. Velocities are right at 3170fps and temperature seemed to have little effect on them from 60F to 90F so it’s a match ready load.
I’ve got a match next weekend and I’m going to use the .243Ackley. Look for a pretty high score this time. Yes, I shot the .223 as well but that’s another story. Loads need more work. Popping primers is not competition ready.