Well I don't have a 243, but I been killing White Tails with 150 gr Federal Fusion since 2006 in a 7mm RM. Excellent ammo at a reasonable price. It shot so well out of a Blaser R-93 that I decided to keep the barrel rather than sell it for another chambering. I'm looking for a 243 myself- maybe later in the year- my work prospects have to improve some.
