Off to the range today with the new short-barreled rifle (SBR).
I fired one box of factory Remington 220gr. loads to check function and dial in the back-up sights. It's now "minute of paper plate" at 50 yards, which I chose because the heavy bullet loaded to low velocity to stay suppressed really starts to drop when it gets out near 100. I also WILL need to go with a longer stock, both to get a proper cheek weld and because as a lefty, my face is too close to the ejection port with this short stock and I kept getting popped in the face by debris (and a casing or two).
But it functioned flawlessly, both with the suppressed loads and without the suppressor when I tested some higher-velocity 147gr. stuff that I loaded for my other .300 Blackout rifle. That stuff has a lot more kick to it and shoots noticeably higher at 50 yards but I kept them all on the same plate with the Mag-Pul sights and that too-short stock, so overall I'm quite pleased. No failures to feed or function with either round and it stacks my brass nicely behind me (subsonic loads) or whips them at the shooter directly to my right if shooting the higher-velocity stuff.
The range was really too busy for me to be able to just sit down and run the tests that I wanted to run, but I'm satisfied for now and it's nice to have the choice of options between suppressed strikes and AK-like power from the more traditional rounds. I do like the 5.56mm cartridge and the AR platform, but at 0-300 yards, give me a 150gr. FMJ moving at 2,000fps+/- most any day.
Quite happy with this one. Now we wait on a more appropriate stock and a quality optic.
I also got some practice in with my SIGnificant other, the Sig P229 in .40S&W.