No shit! Hindsight 20/20...
Oh, and $189 AK's. Shoulda bought 'em by the caseload.
I still put 1cc in a .22 can. Liberty Regulator is already a damn quiet can with what is practically no FRP, but one cc water makes it no-shit silent --only sound is clacking of the slide on a Walther PPK. But it only lasts a few rounds and it's back to normal, whatever normal is.
The point of it is to reduce FRP. In real world offensive use you'd probably only fire a few shots so in this aspect it works great.
I have an integrally suppressed 10/22 and water doesn't affect it at all. I guess it's already as quiet as it's gonna get with a 12 baffle core.
Wire pulling gel was all the rage several years back. I wouldn't spend money on shit they make. You can technically use anything but water based shit is preferred, works better IIRC. Wire gel is cheap and KY is about the same thing.
But yeah, 1cc in the blast chamber (or squirted down the muzzle but be sure you don't get it in the barrel if you do it that way). It'll probably run into the first chamber, that's fine and maybe even better.
Spit and piss also works and I'd reckon those mediums have been used in real world situations more then anything else.
I bet going wet was the shit with wipes, now that's old school. Rubber discs that sealed gases in the can, replaceable and can got louder by end of first mag.
Typically wet cans are used with .22's and/or pistol caliber rounds. I know MANY can mfg.'s that say to NEVER run a centerfire rifle can with any form of wet media. So I'd refrain from that. If you can't fire a bombproof SDN6 or Saker wet, you probably shouldn't be firing any rifle can wet. Creates overpressure conditions in side the can is what they tell me, not such an issue in low gas producers like .22, 9mm, .45, the most commonly suppressed pistol rounds. May be exceptions but that's the general rule, pistol cans only (and only ones where the mfg. says it's okay).