The Federal 125 gr HP uses the Sierra 125 HP bullet. I have shot the Federal load and loaded my own with this bullet. I find it to be very accurate and I know others have found it so. Federal advertises 2500 fps. I think most 20 inch lever guns prob get about 2450.
The bullet has a really, really bad BC (like .150) and losses velocity quickly but it is a very good load for deer, within its proper range.
The new Hornady loads with the pointy bullets have excellent ballistics and really do hold their velocity and energy much farther than std loads, including the Federal 125. However, most deer are killed within 150 yards. If you don't expect to make longer shots, any of the std 30-30 loads will do the job. Pick the one that is most accurate in your rifle, whether its 125, 150 or 170 grs.
Good Hunting,
Bob A