13.0gr. and 13.5gr. are loads of LG I used in WW brass in the .22Hornet CZ257's I had. Excellent load, but with LG, I found using a LEE crimp die gave me SD's in the high teens, 17,18,19fps, rather than 30fps or more.
With W296 (H110), I did not need the crimp. One of he CZ's shot best with pistol primers, while the other didn't care.
16" twist Hornets, when loaded to 3,200fps will shoot the longer Nosler BT's & quite accurately to 400 or more yards. In that one, I was using RP brass which has almost a full grain capacity over WW brass and thus was running slightly heavier loads producing 3,357fps with them & 3,347fps with the other makes of 40gr. bullets.
My rifle would not shoot the 36gr. Barnes VG's at all. They didn't keyhole, but shot 4" to 6" groups at 100 meters.
The Noslers, Barnes HP Varminators, Vmax's & Sierra HP's(very tough) all shot sub 1/4" for 3-shot 100 meter groups in my CZ's with those LG loads - but only if crimped in the Lee die.
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Daryl
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