OK so what is the excitement
?
Lets look at what a sound moderator does, they are not silencers, only moderators. It's all to do with amount of noise reduction and control.
Firstly they do reduce the recoil, how much depends on the actual design it seems and there are plenty of different designs out there.
Secondly they do quieten it down to the point where wearing muffs is not really needed unless it's a very poor design. The bigger the cartridge so bigger the moderator needs to be to deal with the amount of gases produced and of course the more noise you still get.
Ok that's what they do now we come back to the drawbacks.
Weight............. they unbalance the rifle and add length. Yep even the Reflex types that come back over the barrel add length. Just try carry the rifle slung on the shoulder with a moderator fitted. It will end up pointing at anyone walking behind you if muzzle up. If muzzle down there is the added risk of hitting the muzzle end into the ground and plugging it due to the added length.
The "Ting or Ping" sound a lot produce upon firing. Some designs only seem to do this on the first shot. A lot also make this sound when the moderator comes into contact with twigs or branches when stalking.
Mirage............. due tot eh moderator heating up very quickly they do give mirage problems hence the healthy market in moderator covers here in the UK.
Barrel damage...................... oh yes leave the moderator screwed onto the barrel after shooting it and very soon you will need a new barrel. As the moferator cools the gases condense and then are drawn back into the muzzle where theu rot the bore.
It's not an uncommon problem here in the UK and many have discovered that the crown is all pitted and quite a few that the first few inches of the bore is rotten.
Oh yes I do have experience of using moderators and have two of them. One for the rimfire and one for centre fire up to 6.5mm calibre. here it is:-
Fitted to my Parker-Hale 1200C in 25-06.
Stripped for cleaning.