I would take a Benjamin or Sheridan multi-pump any day of the week over a springer no matter how fancy the springer might be. Any PCP air rifle shoots JUST LIKE A FIREARM so there is no need to learn a special artillery hold that Springers must have and any PCP rifle will shoot well off of sandbags. Friends don't let friends buy springers, and if you don't know what I mean, then you are definitely unqualified to give modern air rifle advice.
Heavy round nosed pellets are the best for hunting purposes. Classic examples are Crosman Premier, H&N Baracuda (also known as Beeman Kodiak), and JSB Exact. My most used pellet is the JSB Exact, as 5 people make the pellets and 15 people inspect them. They are ALL match grade right out of the tin, no need to grade them. Made in the Czech Republic a few miles from the CZ factory, where quality control still means something. Never found at your local department or hardware store, which is a good thing, as they are not aiming at the lowest common denominator mass market mentality that really would rather be at home watching Bone Collector, sucking on a beer, and eating pizza, and then go hunting to fill up some in-between time between belching and farting episodes.
I just got back from taking out prairie dogs with head shots at 80 yards, in the wind, so I might know a little bit about what works and what doesn't in regard to air rifles. Those who shoot rabbits in the garden or squirrels out of the backyard bird feeder have less stringent demands, and even a springer can get some hits there. You ain't gonna succeed against prairie dogs at 100 yards in Montana wind with your Gamo springer, even on full body shots, much less headshots.
I gave away my Leapers scope (it was unscrupulous to sell it to the poor kid I gave it to) that Pyramyd Air sold me, and got a decent English brand with a ballistic reticle made for airguns and rimfire designed by Nick Jenkins, the UK shooting champion. It is a Hawke Nite-Eye SR6 3-12x50mm with illuminated reticle. The illuminated reticle in the Leapers scope sucked bigtime. It was far too bright for night shooting even on the lowest setting. It was bought as a 35-yard parallax scope, but when I checked it, it was really just a 100-yard parallax scope that had 35-yard parallax written on the box. The Chinese figure you are too stupid to know the difference and make just one scope model and label them differently knowing that 90%+ of those who watch Bone Collector will never catch their little trick. Actually, 100-yard parallax suited me better, but if you get to know Chinese scopes, you know the bullshit doesn't stop at the fudged parallax setting. I have bought my last Chinese scope, thank you very much. Back to Burris, Leupold, Bushnell and Weaver for me. Nikon is OK as well, although I don't own any, but friends do.
I made my own "deturbulator" (my word, as I invented the thing) for my BSA Lonestar PCP rifle. It is neither a noise suppressor, muzzle brake
, deresonator, or flash suppressor.....but contains elements of each one and does the job of each one to a certain extent. While a fire flash does not exist in air rifles, a PCP air rifle emits a condensation flash from the muzzle, and my deturbulator warms up the cool wet air (that all PCP rifles produce when fired)and prevents a condensation flash similar to the way it could cool down and prevent a fire flash from a firearm. You will remain unseen in any stealthy situation. The main reason I like it is the fact it noticeably improves accuracy by removing disturbances, because the noise, recoil, ringing and condensation puff were never all that disturbing in themselves....but they do affect pellet accuracy somewhat it would seem because when they are addressed the accuracy improves. Without a deturbulator, the pellet receives a kick in the butt and a slap in the face when it exits the muzzle. My pellet, in comparison to what comes out of your air rifle muzzles, has been full body kissed by a Valkyrie in a carnal knowledge way and is headed STRAIGHT into battle. With my BSA Lonestar at Dogtown, I am definitely a Deturbed Individual.