I've been looking for brass for my Model 10 in a .243 Winchester. I'm sure I could mail order some but locally I bought some Winchester VarmintX for the 243. I can reload the brass when I shoot them. I bought the ammunition in the 58gr polytip. Looked similar to the 58gr VMAX bullets I bought. Anyway, the literature on the box indicates that this round has a muzzle velocity of 3850 fps which sounds a little high to me. Anyone know what powder Winchester uses in this factory round? I've had good luck reloading Winchester brass so I'm anxious to get moving on this reloading project ..... thanks...