I've been doing a ton of custom barrel threading lately. There are a lot of options and work-arounds for various problems that a lot of folks are unaware of.
It's generally recommended that you want at least .1" over your thread diameter for a safe shoulder for suppressor use. This can be an...
I think US Ord. tested those clips in 1902-03 but they were already looking to replace the rifle at that point. There was also a self-contained speed loader invented but I'm not sure when that came about.
The ability to top off the magazine without opening the action was one of the deciding factors for its adoption, and downfall. The Mauser was shown to be superior with its ability to load from stripper clips during the Spanish-American War.
I appreciate any brass you're willing to part with...