Although it would/did work, 2.5" sounds broke to me, and I am not that fussy 3 shots @ 100 for about 1.5". I would say to try different ammo, I am not sure I have heard of any handi shooting the light magnum ammo well. If you have not already (I don't recognize you handle) I would definitely recommend asking the guys on the nef forum, the guys there are a great resource for getting the most out of your handi.