Several months ago I had Mike at Tornado Technologies shorten my 10-22T barrel to 16-3/4" and thread it. Why that length? Because it just clears the milled flat on the underside of the barrel for the safety warning drivel. You can just barely see the flat in the second photo.
While this improved the balance and handling for me by reducing the weight, that was not the goal. It was to turn the gun into a suppressor host.
My federal tax stamp arrived a couple of weeks ago (after a six month wait), so I was able to pick up the suppressor and take it hunting on vacation, inbetween white water rafting.
The suppressor is a small, lightweight Aviator model by Advanced Armament Corp (AAC). It's made for 22 LR only, it's 1" in diameter, 6.25" long, weighs 4.2 oz, and has 39 db of noise reduction.
The 10-22T comes with a 20" barrel. As I said, it was cut to 16.75". With the 6.25" suppressor installed, length is 22.75". If the barrel hadn't been shortened, the length would have been 26". Now you know why I had it shortened. And even though the suppressor is longer than the cut off section of barrel, it's still lighter. The gun balances quite well.
How does it work? Quite well.
Ever see squirrels and other critters get spooked by muzzle report or the crack of a supersonic bullet going by them? Not an issue with this setup.
The report with CCI Sub-sonic 22 LR 40gr hollow points is very low, about like that of an average high power pellet rifle, or a Crosman 760 pumped up about 8 times. Remington makes an identical version. It was very slightly louder than the CCI. You can also hear the bolt clacking in the gun. (A synthetic bolt stop may reduce that a bit. Will have to order one.)
There is no sonic crack with this ammo. Unless you make a ground strike close to them and kick up dirt, they have no clue you're shooting at them if you miss. This makes follow up shots less rushed, because they don't spook and take a dive or run off.
The suppressor also works with high velocity ammo, BUT, the bullets are supersonic, and the sonic crack (sonic boom) they make is almost as loud as the unsuppressed muzzle blast. I shot at one gray digger (California ground squirrel) sitting on a 6x6 fence post. Because there was no muzzle report, I could hear the sonic crack being reflected back off of each fence post the bullet passed. It was like playing cards in bike spokes.
How well do these bullets kill? Performance is definitely less than the high and hyper velocity 22 LR loads. It's a good thing they're designed with a large hollow point - they need it. More than once a fast follow up shot had to be made, but this was easy thanks to another feature of the suppressor.... it acts like a very efficient muzzle brake. Double taps were easy.
These subsonic loads also cycle the 10-22T just fine.At least they do with the suppressor. I did not try them without it. It's been said that suppressors can act as a booster for semi-autos, but I don't know if the 22 LR has enough gas for that to work in this case.
I've been shooting so much 223 lately that I'm rusty on the 22 LR trajectory, but got used to it real quick. The scope is an old Leupold Vari-X II 4-12 40mm AO. I'd like to get the same scope in a matte finish with an elevation target knob so I can change POI for the various 22 ammo I'm using.
I'm planning on taking this setup when sage rat hunting next year. There are some properties that want the rats gone near the ranch buildings, but don't like the noise factor. This might gain me some access to normally off limits areas.
Next step is to get a semi-auto 22 handgun with a threaded muzzle. Results should be similar, since the shorter barrel reduces velocity even more. In fact, the cheap high velocity ammo should be reduced enough in velocity that it shouldn't have a sonic crack, unlike when it is shot in a rifle.