Bsa r-10 .22 or evanix rainstorm ll .25 for 100+yards

I have the JKHAN brand of the Rainstorm II in .22. These are very accurate guns, but the shot curve is not a bell curve. They are very hot shooting, and each shot tends to be slightly lower FPS than the other. So I installed a huMa regulator and a reduced load hammer spring, and now I can get 60 shots with the .22 at around 860 fps which is very consistent. We are talking standard deviation of around 4 or 5 fps!! 

The trigger is not the best, but can be adjusted a little. The regulator transforms these guns.

I think he tweaked his but Nappyman's 25 RSII is very accurate. He has videos of him hitting 100+ yard head shots on ground squirrels. 

Mrod has a better trigger and the evanix 25 rs2 I had was the loudest gun I have ever owned ....it has a serious crack to it vs the mrods soft ping .....both guns are accurate .

Fitting a huma regulator to an Evanix RSII or JKHAN Noblesse, which is only $100, and super easy as it takes 10 minutes at the most to install. You could save some dough by doing it yourself. The BSA R10 is nice though.