I tried,,, but couldn't get the page from Midway to load up the info. It gave me a "Oops,, sorry, we missed the target" or something like that.
Basically, I always use caution when loading an older, rarer gun IF,,,,, IF,,,, I have any doubts. While I know a lot of folks shoot full power loads in their Flattops,,, I have other guns to use heavy stuff in. I like keeping my Flattops as they are.