Make a rifle less rude?

[KestrelBike]

For Christmas, I got myself a CZ 527 in .223. I love it, it's a neat bolt-action carbine with iron sights, extremely smooth action (scaled-down mauser) with a 5rd detachable magazine, and in a caliber that I have plenty of and don't mind plinking away with at the range.

Where I live (Northern Virginia) there are basically only indoor ranges if you want to shoot. If you want to shoot outdoors, there's only private clubs (with 5yr waiting list, $3,000 initiation fees, etc) or you can drive out about 2hrs for a shitty, state-run 100yrd hunting sight-in spot where handguns aren't allowed >:\

Now, I took it out to my indoor range that is amazingly only 5min away and in which I have an annual membership ($250, ouch). I was shooting it and enjoying the hell out of it. Only minor complaint is that there's a hell of a fireball out the front, which I don't even really care about. When I was leaving, the RSO who I'm on great terms with laughed and told me I drove away the shooters to the left and right of me who all mentioned my rifle's report, then asked what the hell caliber that was. I looked confused, told him it's just .223, and he said "Well that thing is LOUD." He wasn't annoyed, but just surprised that this thing was putting out such a blast. They love ARs at the range, and the guy told me that people were shooting ARs the whole time and it was just mild "pops", and then when I fired this bolt action with a plain muzzle, it was quite the boom.

Now, it's not overly loud to me as the shooter, but I don't want to be that guy that is making teeth-fillings knock loose for the people in the next lane over. I at least find it extremely annoying when someone brings their SBR with compensator and the flash & concussion is cutting right through the lane divider. So I'm thinking of taking the rifle to get the barrel threaded to put either my SiCo Omega on it, or to get a Noveske KX3/KX5 to direct the blast down-range.

Thoughts? Am I overreacting? Part of me doesn't want to throw down ~$200 in 'smithing fees to have this done ($100 to thread the barrel, $50 for them to strip the barrel from the receiver to fit it into their laithe, another $50 to move the front-sight back as it's at the end of the barrel currently), but the other part of me doesn't want to discourage shooters (there's easily a 70-30% male to female ratio there at any time, they bring in tons of new female shooters) from wanting to go shoot because of obnoxiously loud guns.

If I did go the KX5 route, would this mitigate the blast issue? I suppose it might also work to just put on a A2 flash hider on there.