Tried out some new ammo in the Remington 40X. Used the ELEY SPORT .22 ammo (about $10 for a box of 50).  Got three  '5 shot' groups under 1/2 inch diameter.  One downfall to the ammo is that it is more expensive than regular .22 ammo. The benefit is that it is really accurate.  Since I am trying to be very accurate on targets, then I will use it for matches.  I will use 'Federal Auto Match' ammo the rest of the time, as in practice and varmints.  The 'Federal Auto Match'  is available at Walmart for about $15 for 335 rounds.