after trying a myriad different .22s in my Marlin M25 over the past 40 years, I've come to the conclusion that the CCI Mini Mag 36 gr. HP's shoot the tightest groups in that particular rifle. However, I recently picked up a Heritage Rough Rider single action revolver......Something to play with for the grand sum of $139 bucks.
This revolver shows a marked preference for the Aguila .22 Super Extra 40 grain solids. Since the rifle shoots darn near anything into a 1/2 inch group at around 50 yards, I ordered 10 boxes from Brownells.
After testing them out in the rifle, I may have a new favorite.