with a swap out of the spring they can be detuned for all day shooting,with the stock spring they are in the 30 lb. range for cocking I would say, most shoot in the 850 to 950 range, some are tack drivers with a good shooter and the right pellet, must weight around 8 lbs. I don't have a camera but they look like the B-21 with a shorter barrel and a slightly different stock. Action is blued rather than Parkerized as with the B-21/22...Looks much the same as the RWS 48. With a little work they are a nice smooth shooter, even just a lube tune does wonders.