Beeman's products are mostly Weirach (German) rifles and well made.
I have owned .177 Feinwerkbauw 300, RWS 45 and 48, side cocker. First was okay but erractic shooter, second was okay but never kept up power and erratic. Last was a whacker in .177 at 1000 fps and deadly accurate, but too heavy. Son shoots it now.
I also had a Beeman .22 RX2. Love it. Accurate and power to burn. Gas ram is only way to go, but rifle was too heavy 9+ #s and too hard to cock, particularly when I just had hernia operation.
I had an FX PPC, 1200 fps, repeater, but too nice for woods and too much trouble with refill, tanks etc. Rifle was a bit oud and long.
I ended up going with 6.5# BSA Lightning .22, that I bought for about $350 from Cobra Air in NY.
I sent to Dave Slade - Airgunwerks.com in CA for Gas Ram. Now shoots at about 702 fps with Beeman Silver Bears. Now looking for BSA Supersport Carbine barrel to use with same power system.
With its light weight and low cost, I do not think it can be surpassed for what I do - kill crows - but each person has preferences. I employ red dot sight on maxi rail, but may switch to BSA on Weaver rail conversion, if not too high for me...
BTW, in .177, a BSA Lightning gas rammed gun would be shooting kust over legit 1000 FPS.