jwall, I never felt the need to load my 243's to max or uber-max loads when I hunted with it and 95gr Partitions. Deer died even with lower loads. I never load my 250's to max either, and on the antelope hunt the critters died with that.
If you REALLY want to compare, it looks like the 243 will push a 100gr about 100fps faster than a 250-3000 will. If you're the type who is convinced that 100fps is the difference between a dead critter and wounded critter, then stick with the 243.
Older 99's won't shoot the 100gr bullets well, so then you're at the 87gr bullet. And you know what, deer will die just fine with those. The bolt actions will shoot 100gr or heavier just fine, and the deer die fine with them.
I wonder why you use the 243 since you're hung up on power and sd and velocity? Seems you'd go at least with a 7mm08, or maybe even a 35 Whelen?
