Did a little shooting tonight in my state of the art basement airgun range. My shooting lane is a lengthy 13 yards long and the target tonight was an Olympic 10m pistol target. My rifle is a pre-war .177 Diana 27 and was made from the 1920's into the 30's. This style of rifle is what's sometimes referred to as a militia rifle (no forehead or one piece stock). Tonight I used Beeman Bearcub 8.04 gr. round nosed pellets. These were propelled out of the barrel at a blistering speed of 536 fps producing an incredible 5.2 ft. lbs. of muzzle energy! I was shooting off hand and fiddling with the rear sight trying to dial it in with these pellets. There are two separate groups, upper right and center of the target.