So, it can be a gun issue, as well as an ammo issue.
Really the problem as described is not a 'gun issue' at all. The true issure is evidentoly piss poor quality control at the factory wherein they make the ammunition. It should shoot just as well out of a light weight revolver as it does out of a heavy weight with regard to bullets not coming apart from the cases. If the ammunition cannot take the recoil of a light weight revolver, then something is very, very wrong with the ammunition - or it should at least specify on the box that this ammunition was made to perform properly in only heavier weight guns. The boxes of Balzer ammo, to the best of my knowledge do not state such, so it winds up likely being a lousy quality control problem. Don''t blame a revolver or its lightweight characteristics for a problem that is sloely being caused by improperly seated bullets or improperly crimped cases.
All the best,
Glenn B