Tall Pine,
No, I mean the 1876 Winchester, aka the Centennial Model.
The 1873 was chambered for rounds like the .44-40, .38-40, and .32-20.
The 1876 was chambered for rounds like the .45-60, the .45-75 and the .50-95.
"You're missing the point! The BLR and other lever guns were never offered or asked to participate in a US military selection board. If they had, any such concerns would have been addressed."
No I'm NOT missing the point, Keith, because ALL lever-action rifles suffer from a lack of primary extraction power! It's the mechanical nature of the design.
Even HAD the BLR been around in 1895, perfected, box fed, etc., it would STILL suffer from this problem.
Lever rifles have, at best, slightly more primary extraction power than the straight pull bolt designs that were adopted around the turn of the last century -- the Schmidt Rubin, the Steyr 95, the Winchester-Lee, and the Ross. With those firearms, though, you could put the butt on the ground and apply a boot to the bolt handle.
There are only so many ways that you can skin the cat on this matter. Winchester was actively seeking military contracts for the 1895, and made some inroads, yet even his design genius couldn't produce a lever-action rifle that was substantially superior, or even fundamentally equal to, the basic bolt-action rifle.
Winchester was sending its agents worldwide around this time, because there was a HUGE move toward new rifles. Yet the only substantial military contract Winchester got was with the Russians.
After the initial purchase, Winchester even offered to set up a factory in Russia to make the rifles if they wanted more. The Russians refused.
Every other nation that adopted a new rifle in this time frame went with a bolt-action gun, and many of those nations went with bolt action guns that were not Mauser guns, so it can't be said that it was simply a Mauser cabal.
It should be pretty evident that if roughly 50 nations around the world know about your rifles and designs and you make offers to those nations to produce lever-action rifles for them, and EVERY ONE OF THEM turns you down in favor of a bolt action rifle, it should tell you that more than just a few military people felt that the inherent design of the lever action was unsuitable for military purposes.
I'm not sure why you're not grasping that concept.