D-460 in 22 is the hardest kicking I own. Great for G-Hogs. 60 yds no problem. Tom
I put one of these--http://vortekproducts.com/ourstore/airgun%20Springs/OEM%20Springs?product_id=172 in my Diana 350 and it is easily the hardest kicking AG I've shot. Twang-free, but plenty recoil.Scotty