Om so your looking for quiet, tree rat accurate to 40 yards with out being overly expensive.
Sh
BEnjamin/sheriden 392 is about as cheap/good as you can get and with just a few simple mods and tweaks can get the trigger and accuracy a bit better.
https://www.pyramydair.com/s/m/Benja..._air_rifle/205
Set it up with the williams 64 rear peep sight and your good to go.
If you are going to scope a air rifle think on lines of that and buy something that is designed for scope mounting from the getgo.
The air rifle market is on fire with so many coming out. Some are really nice some are a great value.
I just seen that air venturi came out with a multipump that looks promising.
I ditched all my brake/barrel rifles many years ago. Only ones i like now in the spring/piston design is side or under lever.
PCP are very good also and right now there are some entry level ones that are not overly expensive and perfect for back yard pest control.
this is my standby 30 yard pest control. its a crosman 1400 that's mimute of tree rat and anything else that gets into the 30 yard ring of death. 5 pumps gets me to 500fps with a 14 grain pellet and will drop just about anything 30 yards and in.
https://i.imgur.com/ld6cIREl.jpg
I also have a Benjamin discovery that although shown here with some mods over the years has been minute of tree rat to 50 yards more than a few times. its just under 800fps with 14g pills.
The pcp guns take a little time to figure out. my disco has a prime air charge where I will get consistent shots... ex if I just fill it to the gauge reads 2000psi the first 8 shots or so will be all over the place. then it settles. It took some time but I found my peak fill is right at 1800psi and I will get a solid 15 consistent shots before velocity starts to suffer.
that's said this is a first gen disco. I added a trigger job, barrel band and a power regulator (brass knob at the back end) along with a custom stock. on a good day with no wind and a solid platform I got this down to 1/2-5/8" groups at 50 yards
my disco is set up to be more of a target rifle now with the regulator set to get me about 600fps brings my shot count up with the 10 grain pellets a good amount,
https://i.imgur.com/i4Nk8Edl.jpg
these are my daily shooters, I have others and the old 760 has taken many of the various yard rats also.
https://i.imgur.com/CnxCOZil.jpg
My friend recently joined the FPP club (idiot) so he has been shifting to air rifles since he no longer can have firearms. He picked up the hatsan flash and I must say for $300 it aint bad we where dinging the the air rifle silhouette chicken target at 50 yards pretty easily right out of the box with a cheap center point scope...