i would bet they're 'Krags' in .30 Army or to you civilians a .30-40 cal. its kinda hard to tell from a picture, but even in a picture a .45-70 is kinda obivious. i forget the post war history of the park, but i know they had troops training there during the span-am war and up to WW1. stan huges of corinth relics has several plates that were dug there that come from the span-am period. I know years ago, we dug many krags just south of the park. the ammo produced in norway was a little different in design from the krag bullets that were later produced at the springfield armory. Again i was told the difference years ago, but cant remember now. I'm pretty sure its Krag-J