Roughly 10-12 Db quieter at the shooters ear, it's not bad with muffs and plugs.
Guy was shooting a RPR with the factory brake at the 25 yard indoor range a while back, he actually works there. Honestly didn't seem much worse than my SBR, either way 1 round was enough to chase me out.
For me, my outdoor range is 25 miles each way and recent weather has made crossing the creek risky enough that they’ve closed it numerous times this year. (Back open now though
) Since I am not a full member (3 year waiting list) I can only go there fri-sat. 
Armalite I'm guessing. What cartridge
LMK if you're ever around central Iowa.
I do wish folks wouldn’t use comps indoors. Rifles are loud enough, but it’s acceptable. Comps sending extra noise and blast to those on either side is obnoxious.
I just shot yesterday and some dude with an AR-10 .308 sporting a 16” barrel and a side-discharging comp set up two lanes over to my left. (The guy to my immediate left was shooting a .40 I believe.)
AR-10 guy would stick the barrel six inches past the end of the side plates between the lanes and the blast would make the lid on the box of .22 on my shelf flutter. It was so bad that the blast from guy in the lane next to me on my right shooting a Desert Eagle .44 was tame in comparison.
I guess if the AR-10 guy had been even a halfway decent shot I might have put up with it a bit longer, but his blasting 10 shots and not keeping half of them in a 6” circle at 18 yards was pretty pathetic. I get better patterning from a 20 gauge shooting buckshot.
Me and the guy between us cleaned up our fired cases and left the range at just about the same time. I think he was done, too.
Stay safe.
For me, my outdoor range is 25 miles each way and recent weather has made crossing the creek risky enough that they’ve closed it numerous times this year. (Back open now though) Since I am not a full member (3 year waiting list) I can only go there fri-sat.
The nearest desert site is 60+ miles each way, to a free for all shooting spot. Anywhere else legal to shoot without Tactical Teds and Homie the Clowns running amok is another 30+ miles out.
My closest indoor range is 3 miles away. I’m there 2x a week.
It’s not ideal, but ya gotta do what ya gotta do sometimes. Rifle noise is loud, but I double plug/muff and it’s not abusing . Some guys just push to to the painful zone with the comps, and don’t seem to care. It’s those I am not enamored with.
Stay safe.
I have it on my AR-10 6.5CM. Like it.
Every morning, every afternoon, even mid-days on many freeways it’s a crawl. Something like 15-17 million people live in the megalopolis between Santa Barbara and San Diego, there is little escape.Call it 19 years ago, I owned a 308 FAL carbine which had a permanently installed muzzle brake that brought it to legal barrel length and fit the AW Ban rules. It was loud outside it was really really loud inside. I lived in the Chicago suburbs at that time and brought it and a couple handguns to a local indoor shooting range. I started shooting with my handguns and then some yutes (they might've been wearing gang colors) started blasting away with their Bushmaster Carbon 15 AR pistol. Well I had to counter that and started blasting away with my FAL carbine.
They came running over to see what the heck was that cannon going off?
Working overseas gave me the opportunity to move to rural Missouri where I bought a house with land. Now I have my own range in my backyard.
But to give you some perspective on rural living. The nearest stop light and Walmart for that matter, is 1 hour away (35 miles). If I want to shop at Costco or Sam's Club I need to drive 1.5 hours which is about 79 miles away.
Living in the Chicago area, I could easily spend 2 hours in traffic and hardly cover 20 miles. I bet California is the same way on Friday afternoon during rush hour.
