Thanks everyone. Other than being a little embarrassed for making that kind of a mistake, makes me feel a little more at ease.
I had some 3 1/2s in the bag that I used to shoot in my SBE and Nova, just got sidetracked while shooting the M2 and didn't think clearly. The shells were old and I just wanted to dump them as I don't shoot 3 1/2s anymore (that was actually the only box I have ever purchased a few years back). Finished the rest of the box with the Nova.
Again, appreciate the quick responses.
bb123