0.177 vs 0.22 pellets, if the same weight and shape

[Ribbonstone]

We take a kind of reverse coruse here....if you've got a bit of an air hog PCP (reguardless of caliber), then feed it the heavest weight pellets it will shoot well.  Will often earn enough energy over the same shot count to be classed as "OK" efficient (won't be as fast...but working out the energy, is very likely to earn more foot pounds for the same number og "good" shots).

IF you do manage to get a PCP shooting with more energy with lite pellets (which can be done, but it isn't real common without some extensive mods)....then shoot the lite pellets.

[Wolverineshooter]

Thanks Peter for the pellets info. Hopefully mine will not be picky just like yours