I couldn't find out the velocity as the 1 ounce stuff was in sealed flats and no one was around to open one. I am probably anal, but I don't rip into things without asking.
Every shot shell container, be it an individual box or a flat, I've ever seen has always had the following info: Gauge, case length, shot size, and finally dram equivalent and/or velocity. Including the velocity is something that's relatively new. Since it's directly related to dram equivalent powder charge, it's really redundant. Some of the newer specialty loads, like low recoil, don't provide dram equivalent load. This also applies to some of the newer 1 ounce and 7/8 ounce loads. For the newbies not that familiar with the dram equivalent loads, here are some traditional loadings:
12-ga, 2-3/4" shells with 1-1/4 ounce of shot:
3-3/4 dram equivalent load - 1330 fps
3-1/2 dram equivalent load - 1275 fps
3-1/4 dram equivalent load - 1220 fps
3 dram equivalent load - 1165 fps
12-ga, 2-3/4" shells with 1-1/8 ounce of shot:
3-1/2 dram equivalent load - 1310 fps
3-1/4 dram equivalent load - 1255 fps
3 dram equivalent load - 1200 fps
2-3/4 dram equivalent load - 1145 fps
Low recoil - 1090 fps
12-ga, 2-3/4" shells with 1 ounce of shot:
3-1/4 dram equivalent load - 1290 fps
3 dram equivalent load - 1235 fps
2-3/4 dram equivalent load - 1180 fps
Here's what may be behind the marketing of the Walmart shot shells. (For those of you who are not reloaders, of the shell's components, the actual lead shot is the most expensive.) So, if you're selecting between a 1 ounce and and 1-1/8 ounce ammo, the 1 ounce should be cheaper all things being equal. So, to make it seem as though you're not getting ripped off with the 1-oz loads, they put in a little more powder to increase the velocity. Of course, this is exactly the opposite of what you're looking for if you want reduced recoil.
Bonus point: If you noticed that an increase of 1/4 dram equivalent increases the velocity by 55 fps, then you get a gold star for today.