These old eyes can't make out the letters, sorry. Not even with a magnifying glass.
Also, I've got a veritable lifetime supply of Gamebore and RST 2.5 inch shells. I even have a full case of roll crimped black powder 2.5 inch 16's which are a lot of fun to shoot but not so much fun to clean up after.
If you do decide to shoot the BP, make sure you get all of the petroleum based oils and lubricants out of the barrel. I just learned that lesson the hard way and am still scrubbing fouling out.
For BP, hot, soapy water works well and equal parts Murphy's oil soap, rubbing alcohol and hydrogen peroxide works even better. Usually I can clean the shotgun after BP shooting in about 15 minutes.