I think you're forgetting about all the sillouette shooters that use the .260 Remington in matches-don't let them hear you say that
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ORIGINAL: zrexpilot
.243 because of its accuracy. the others have never been known for competetion shooting but the .243 has, and a lot of other 6mm cartridges. something about that bullet i guess. Ammo is available everywhere in all sorts of brands and weights. 105 gr down to 55 gr. It will push a 55 gr to over 4000 fps second and a 100 gr to a little over 3100 fps. The sd and bc of the 100 gr is that of a 150 gr .308 caliber which makes it flatter shooting and bucks the wind better.