N/A Cheapest option for groundhogs

There is a guy selling refillable cylinders for the Komplete too for about $100.

I like SPA guns for less expensive ones. I have 5 but one does not currently work (gross manufacturing error but I wouldn't worry about that, they are generally reliable). They are all bullpups which are a little more expensive, pushing $500. A less expensive option that is similar except for length would be the Stoeger Ranger or Scout. I would get the Scout because it is not so long. I would get the 25 caliber. Groundhogs can push 10 lbs and I shot a raccoon about that weight with my P35-22 and it worked but I would use my 25 next time one shows up (and I did and it worked better). Airgun Revisions has Stoegers too, I saw a Scout for $319.

A hand pump is totally doable for pesting. You will need to pump hundreds of times to get it full initially but then you have about 50 shots which should last awhile. PCPs should hold air for years. If they do not, you can return them. Refills are also a lot less pump strokes than an initial fill. You will need to use some air to get it sighted in so you will probably do at least one refill but after that you should be set. My "better" hand pump is a cheap one from Amazon. No need to spend even $100.

I recommend JSB (or FX) 25.4 grain and H&N Baracudas to try. If you had to pick one, I would get FX 25.4s. 2 of my 3 25 caliber SPA barrels like them a lot.

My favorite "cheap" scopes are the Hawke Vantage line. A 3-9 is a good all around but for shots within 30 yards or so the 2-7 would be fine (that is what is on my Prod).
 
  • Like
Reactions: fishing43
Why not the Umarex Komplete in .22; around $200.00. It uses 3600 psi Nitrogen cylinders. For the occasional use, it would make sense. The nitrogen cylinders are about $12.00 each, but like you said, you don't want to get into the sport, so just an occasional investment.
I can’t believe I’m actually going to say that gun is a perfect fit for something but I have to agree. It’s perfect for this. You will just have to get proficient enough for a headshot in .22 for sure. You can usually post up on a groundhog hole and wait them out and get pretty close. I killed one with a .22 Airacuda max. One in the head and it went nowhere.
 
  • Like
Reactions: bubbahotep
Komplete apparently makes about the same fpe as a Notos. I think that is too light for a 5-10 lb animal. The raccoon I shot with my P35-22 got hit with nearly 32 fpe and still took 3 shots to be gone. The second was between the eyes. It was only about 10 lbs. I'd rather use a 40 fpe 25 caliber (or more). My P35-25 was less than 45 fpe when I hit one between the eyes and it was immediate lights out. Size was similar. I'm not saying a 25 fpe 22 can't kill a groundhog, just that it may take multiple hits to expire.
 
@JimD Average fps of the HAWKi Thunder 25.3 gn pellets out of my Komplete is 718.8 fps, so 29 fpe; this is muzzle energy. I don't know the down-range energy. I suspect your P35-25 is 45 fpe at the muzzle also (?). It would be nice to now what the acceptable fpe is for different size small game, squirrels, rabbits, ground hogs, etc, for a clean kill. Then the down-range energy could be calculated, and you would know what can be humanely killed with a particular gun. I haven't chrono'ed the pellets at 40 or 50 yards, yet, but it seems like a good idea. (I'd use a .22lr or magnum after 50 yds. in any case!)