I think with the improvements with the .270 bullets in terms of b.c, you can't really say that the .280 is better than the .270. I'd rather just a few good bullets with good b.c's rather than lots on the basis that there's more chance of the ones you want being stocked than some other one that might have a different point of impact and powder charge and seating depth. I'd rather have the better sectional density of a 140 grain bullet with a good b.c. out of a .270 than a 140 grain bullet out of a .280. If you blow out the .280 case and put a 30 degree shoulder on it and use 150 grain projectiles at say additional 50 fps over the .280...that might be marginally better than the .270 in some respects, marginally more recoil and muzzle blast, but not enough to detract from being relatively easy to shoot well at distance (300 -350 yds). Feeding would still be good and you don't lose magazine capacity.
