It amazes me how guns like one brand, round, grain, etc... I followed the exact same process for each load during my range time the other day. The barrel was dirty from the last range session, so I ran a brass brush through it several times and followed that with a dry mop , I shot the 180 TBT first at 100 yards, sighted in 2.2" high. I had already sighted this load in and expected it to group around 1-2" which it did. I ran the brush through the barrel several times and followed that with a dry mop. The next 3 shot group was the 175 TA, and this group closed in just under 1". Again, I ran a brass brush through the barrel several times and followed that with a dry mop.
Next I tried the 180 Winchester white box power point. This load was all over the place with a total spread of 8" and "grouping" of roughly 4". I noticed significantly more recoil with the Winchester load than the Federal offerings as well. I was really hoping the Winchesters would shoot good, because i picked up the box for $25 at Scheels over the weekend and they actually had a ton of stock in this load. Unfortunately, given the very poor results with this one, I won't be purchasing it in the future.
During my next session I plan to try out some 180 Federal Fusions to see how they shoot. The ballistics are very similar to the TBT and the TA, so I am hopeful that these may be another more reasonable (and available) alternative. I've also read that the Fusions softer construction performs great on black bears.