I had feeding issues with the 115gr but not the 147gr, also on a stiff new mag...I shoot Winwhite all the time and find it great and consistant ammo, maybe a bot of variation in OAL, but generally, far Far FAR above Blazer brass with the soft lead bonded copper plating/burred-case-mouths/inconsistant-crimp/COL-all-over-the-map as well as loaded rounds, and this is my experience through multiple calibers of the stuff....of course, i only shoot about 1000rds a month, so folks with more experience may have some better input.