Sunshine Today and winds under 10, temp about 30 F.
I ran the chronograph and shot groups with my experimental low velocity squirrel load. My Rifle is a NEF Ultra Varmint in .223 Rem. with a 1 in 12 twist Bull Barrel 22 inches long. The after market varmint composite butt stock is weighted and a Forend Storend stock used. The all up weight with a Bushnell 3 x9 scope is 9 pounds 8 ounces. The bullets are cast from the round nose Lyman 225646 mold with Lyman #2 clone alloy and sized/checked at .2245"
The charge is 2.9 grains Hodgdon TiteGroup. My extrapolation of data predicted a velocity of 1,150 fps and I came close with an average of 1,137 fps. There were no misfires in all 50 shots at the range and no odd sounding shot report. The report seemed no different than a .22 rim-fire.
Raw Chrono Data:
1141 1211 1129 1159 1138 1114 1121 1145 1137 1121 1195 1160 1118 1117 1105 1127 1116 1124 1137 1137
Ten shots were fired to sight in and the first group was 6 inches lower than my varmint load, but zeroed right in. A 22 cal. Hoppe's Bore Snake was pulled through once after the sight-in and once after every 5 chronographed shots.
My hopes were realized on the first target and a group less than 1 inch at inch 50 yards printed. Several other targets were all about the same size and under 1 inch. Here is a screen shot from my On Target program that measures group size with my target in my scanner:
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