I stocked up of WWB 45 from Walmart when they closed out their handgun ammo. Although the boxes were all the same, there are three different headstamps.

WMA 19 with red primer sealant.

WMA MATCH 18 with red primer sealant.

Winchester 45 auto with no primer sealant.

I’m assuming that other than primer sealant and headstamps these are all the same? Just a case of Winchester using whatever brass is available when loading the cheap white box ammo?

I guess I should shoot the stuff with no visible primer sealant first?