After a long while debating over witch spinger to buy i finally decided on a Pro Sport .177. Having shot pcp for some years i fancied a bit of a change. I got the rifle home put a scope on it put it over the it over the crony and was happy with 11.2ft lbs. Then came zeroing and what can i say the rifle is a dream to shoot and zeroed after only a few shots. This then got me thinking Springer HFT!!! so i then set about sorting aim points again this was done with no dramas. But and there all ways seems to be a but after shooting about 300ish pellets power is don to 10 ft lbs ???????? So have just sent it back to Air Arms Any one had the same problem ?