Bulldog?

Buldog has plenty of power for coyote or deer for that matter. Shoots both pellets and slugs. Not quiet stock, I put a Donny Emperor on mine and now it is backyard friendly. Still a lot of noise from the internals, but that is only going to bother you. All around good value. That said I don't shoot it much. .25 is a more versatile caliber, still enough punch for a well placed coyote kill, and the ammo is half the price of the .35 
 
I have mine regulated and tuned for pellets, with homemade LDC. As mentioned above, you will still have a good deal of mechanical noise, and being a bullpup your ear is closer to it. The plastic clam shell stock takes a bit to get use to. Overall, it is easy to work on and parts are readily available from crosman. If you are distance shooting, scour the net for accuracy reports. I don't recall it being a highly accurate gun at 100+ yds. Myself, only shoot within 70yds, and get about 1 1/4" groups at 50. Good luck with your search.