yes i have the same gun as you. i went through many many shells to find what worked the best. I was shooting a 10" circle at 40 yards. winchester high velocity 3.5" # 6's put 140 to 150 bb's in the circle. #5 high velocity's dropped to about 105. Winchester supreme xx 4's, 5's, and 6's did not break 100. remington high velocity's were a major waste of money. Federal flite control's were between 95 and 110, depending on the shot size. I shot all of the above off of a bench with a jellyhead choke and the stock choke that came with it. The jellyhead produced higher numbers through all the above shells. I was not totally satisfied until I shot atleast one Nitro to compare to the others. As you probably know they proclaim to be the best so I shot one from a bench at 50 yards. Shooting at the same set up into a 10" inch circle this is no bullsh** I got 199 bb's in the circle and close to 300 on the 14X17 target. Needles to say I bought some Nitro's, pricey yes, the best yes! Hope this helps, jim