I shot 1 round of each - 1 Win., 1 Rem & 1 Fed from my .243. They were all loaded identical with 41.7gr of 4895IMR. They made a perfect diagonal line 1.5" long. They made a 45 degree line.
Today I shot 3 rounds of Rem - perfect cloverleaf.... I shot on top of that 3 rounds with Fed brass. A reasonably tight group 1" away from the cloverleaf.
Different brands of brass will act differently with respect to ballistics.
It seems more prominent in smaller cases like .243 & 7mm-08. The 30'06 & 26'06 cases don't seem to be as sensitive to different brass mfg'ers
Frank in Fla
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