My 4.5" with Innovative Arms integral suppressor runs like a champ...(with CCI ammo)
Innovative Arms Silenced SBR With Gatling Trigger Video by jbarchitect68 | Photobucket
It's a SBR by Innovative Arms with a 4.25" barrel.
I unscrewed the baffle and left the silencer shroud in place so it looked like a 10 gauge at the muzzle.
I did the 2015 PA Steel Challenge last weekend. There were 5 stages, each with 5 targets and you did each stage 5 times. The worst time for each stage gets dropped.
I took 4th out of 25 in the rifle category using my 15-22 SBR. I had to unscrew my silencer baffle so the shot timer would pick...
I've seen people praise and complain about the same ammunition with the 15-22.
I'd get two boxes and try them out with your specific gun before getting a case.
I just ran 100 rounds of CCI standard velocity out of my two stamp this weekend. Worked great, no issues, and no sonic crack, so much quieter. I plan on shooting those from now on.
I put one on mine to make it look like its big brother.
The reticle lines are pretty fat and if I wasn't trying to match my acog I probably wouldnt have done it.
You may find this info interesting.
I used an Innovative Arms 4.5” barrel with silencer for this testing. I did a little research and it seems a silencer does not have an appreciable effect on velocity although I did not test without the silencer.
So here are the chrono results for Federal...