I thought that most Sheridan's max pumps per the manufacture's manual was 8 pumps? That's what I recall from when I was a kid/teen....LONG
According to the Sheridan Bluestreak and Silverstreak manual in section 3, pumping your airgun, it says: "[...snip...]at least three, but no more than eight."
The Crosman 362 and 2023 also need only eight.
I always read the manual when I get a new airgun, yet for some reason, I was -certain- the Benjamin synthetic stocked versions needed ten pumps for full power, so I scrounged up the manual that was provided with my 392s in 2020, which applies to both the .177 & .22 caliber "s" versions, as well as the later renamed Benjamin Variable Pump air rifles from 2016 on, and discovered the manual is UNCHANGED in that regard, still stating "at least 3, but no more than 8" pumps. Sonuvagun!!! I almost never used more than eight pumps in my own 392s and 397s rifles, but I have put in ten tough pumps often enough, especially considering it's actually supposed to be verboten! I would swear I've seen copies of small game FPE charts with the energy for everything from three to ten pumps listed for various animals using the Benjamin rifles, or reading online articles by 'experts' using ten pumps for various things, as well as many online discussions in which users talked about full power needing ten pumps, and everyone in all of them 100% wrong, ME included! No WONDER it was so tough getting past eight pumps with those two air rifles! One thing I can remember quite clearly from those charts though, was the very small, basically insignificant benefit in FPS and FPE from any more than eight pumps, which is why I almost never used more, regardless of the circumstances. Thanks Revoman, for setting me straight. Also, my apologies go out to the OP and everyone else for the bad advice regarding setting as a goal making ten pumps easier to achieve. I am not only sorry, but very embarrassed too. Well, the suggestion for working up to more pumps still stands, only fewer of them will be needed now. Again, sorry all!