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I thought Federal published the ballistic charts on the back of the ammo boxes? If not, I think their website may have that information.
Gotta agree with those that posted above, TBBC are good bullets, but not really needed for deer, especially from a 280. If you were using a marginal cartridge or pushing the bullets at speeds not common for the design (say the 7mm RUM) then they would be a good idea, but the 280 should be okay with any of the non-premium bullets for deer.[/quote]
Federal does post info on their web site, but they only had I believe the 160 grain Bear Claw listed for the 280. Once I got the ammo in, it had the ballistics on the box, 3200 fps muzzle velocity, but what I was really looking for was bullet PERFORMANCE, not necessarily velocity, etc. I know these bullets are designed for deeper penetration but would be hesitant to use a 140 grain bullet in anything larger than deer so am curious why Federal offers this particular weight bullet in the 280. Not complaining though. :-) I have pretty much used Winchester Supreme 140 grain Ballistic Tips for deer with deadly accuracy and results, but for about half the price I wanted to try the Trophy Bonded Bear Claws. Unfortunately my gun got dropped right before we went on our hunt and messed something up internally on the scope so that it won't hold zero, so had to use a back-up.