Score Shotgun Question

[f780]

I recently purchased a new in box Score shotgun and was wondering if anyone has tried using light target loads in theirs. I sort of expected issues with the light loads and my won't cycle with them. Has anyone found a solution?

 

[gunsaholic]

Have you tried different brands of ammo? I don't know how many of these Score guns are around so it's possible that it may unfortunately be the nature of the beast.

 

[f780]

So far, just the Federal light loads. My understanding is that these guns are basically the same as the Weatherby guns and i know they come with two gas pistons, one for target loads and one for heavy. My question is, are these pistons interchangable between brands or am i stuck with heavier loads.