Either of these will do the trick. I would suggest the .22 or .25
They are also available in .177
Hatsan test there rifles with lead pellets no other manufacturer does. They are very well made guns. You won't be disappointed
https://hatsanairgunsusa.com/product/edge-spring-gun-only-no-scope/
https://hatsanairgunsusa.com/product/mod-85-spring-camo-combo/
How far away are they and how much noise is allowable?
FWIW my suppressed .22’s make less noise than my moderated PCP air rifles.
A non moderated PCP can be louder that a .22 LR.
I just ordered a Diana Stormrider... Basically for the same reasons as the OP. Don't know if it's any good yet though!
PCP in .22. I'm hoping for 850 fps or so with a 14.3 grain pellet. Can get regulators too. The gun by itself is less than $200.
Yes, but it's loud. I got a Stoeger shotgun for 3-gun, and it would work splendidly if that's what I wanted it for. However, that isn't what the OP asked for, so...
Really, pellet guns are fun too! They are far more expensive than firearms, at least when you try to judge some sort of parallel performance between them, but they aren't exclusive of each other.
Excuse me, this is a break barrel pellet gun I m referring to. Caliber .17. I I did leave off the SS, it’s 1100SS.
Loud is a relative thing, I’m hard of hearing so perhaps I don’t notice it as much as others.