OK Mike I will set up my list of how I go thru bulls before and at the sale.
Before.
Catalog
1. I will NOT buy bulls from anywhere that wont post the actual performance information (BW, WW, YW, Frame, Scrotal, REA, etc). I see too many producers (especially in the SEast) doing this on Angus bulls to save catalog space. I have never been there but I love looking at Gardiners sale catalog, a ton of information.
2. Depending on what I need, I might cross off all bulls with too high a BW, if I need a bull to breed to heifers. I will not buy a bull simply to breed to heifers, however. Our "heifer" bull has a BW Epd of 2.6 right now.
3. On the performance info, I would like to see a WWR at or above 100, I want to know his mother did her job. ADG and YW are important but at a much lower level than WW. We sell most of our calves before one year of age. I will look at MW (mature Weight) epds, I think our cow herd is big enough so I wont go out of my way to buy a big MW bull. I actually like to see ratios for BW, WW, & YW look something like this 98-107-102. I want the bull to be slowing down at a year, my theory is the MW will be smaller.
At the Sale
1. Structure, good feet placement. A long striding bull. Nice tight shoulders.
1A. Disposition!!
2. Depth of rib, Capacity
3. Muscle (too much muscle seems to affect structure)
4. Ideally I would like to see his dam. I want to see udder structure, disposition, etc. This is usually not possible, so I look for family members (1/2 sisters, etc).