I've got an unregulated Compatto in .177. I haven't been shooting it much yet, and have only had the chance to shoot a couple hundred shots of JSB 10.34 to zero the rifle, establish shot count and basic speeds.
First question for anyone who knows the compatto: My rifle has 4 power settings (not three as advertised in any review I've seen). Is this normal? For interest they are as follows (in order of position top to bottom:
- 18ft/lbs (886fps)
- 19ft/lbs (911fps)
- 17.5ft/lbs (872fps)
- 14.5ft/lbs (801fps.
My shooting is mostly vermin and plinking, from 25 - 50m, so flat is what i am looking for. With the 10.34gr JSBs, I get nice tight groups at 25m @14.5ft/lbs, but with a bad BC, they fall off a lot at 50m. The lighter 8.44s will be even worse. Pushing them to full power thought starts them out too close to 900fps, which the consensus seems to be is too fast to be stable...
So I am wondering if anyone has had luck with a heavy, better BC pellet (such as 10.4gr H&N Baracuda Power) doing roughly 870fps? This would be at about 17.5ft/lbs in my rifle.
Keen to hear you thoughts on power / pellet choice.