Try shooting off of a rolled up blanket or sleeping bag. Hold the rifle as lightly as possible and let it move freely when fired. Concentrate on a good trigger pull and follow through watching for the hole to appear in the target. Shooting with a firm grip and rest is not conducive to accuracy. Quarter sized groups at 25 yards should be pretty easy........as long as the wind is not blowing.

A true sportsman counts his achievements in proportion to the effort involved and fairness of the sport. - S. Pope