Rifleman, I'm not familiar with those cartridges in a rifle but ammo cost is the second biggest factor for me. The first is having plenty of size in caliber. After that I want to be able to afford 1-500 rounds a week at the range. I probably wont need to shoot as often as for some reason I do better with open sights. (I bought a decent scope, not a grand, but not a cheapo either.)
Big sky, I've been educated that the .270 should be plenty for the bears I am after. Lots of guys around here use 7mm-08 and 7mm mags so I'm not opposed to them either. Maybe even a 6.8 SPC at this point.
Burris, I do think that anything that ends with mag is usually a pretty sweet package. I haven't priced 7 mags and 300 mags but if they're anything like the other mags, I won't want to shoot them as often.
If anyone knows why the brass 99's are better I'd appreciate the knowledge.
So far I think I've got more decisions to make than when I started. Luckily I'm not going after anything bigger than yotes til after next summer so I got time.