I had both .22 and .25 flash and flashpup, they are basically the same frame and parts, they both were quite powerful, I bought them as refurbs, all the problems were fixed by them, I liked the accuracy and power of the .25, it's powerful enough for Pig too, but for the small pests a .22 will be fine, for .22 use JSB 18's or Crosman domes or hollow points, it hates all others brands of pellets, for .25 use JSB MKll's or Benjamin .25's, both are very accurate. you will need to get #006 O-rings for the fill Valve seal, they go out often, and make sure to lube the bolt with gun oil or light grease, use Silicone oil and lube the internals via through the pump hose or filler probe, 5-10 drops every 10 fills.