There were a great number (approximately 380,000 give or take) of "1898-style" (no shroud at bolt handle seat) actions made.

5000 of them were carbines, in the 112-135xxx range, marked "Model 1898".

I'm not close to my Brophy just now, so the following will be off - but that is not the problem we are having.

Of the remaining 375,000 actions, about 37,000 (or whatever Brophy gives for the sum of Model 1899 production) were also used on carbines, but they were ALL marked "US Model 1899".

The other 338,000 receivers were used on Model 1898 rifles, and were marked "US Model 1898".

ALL Model 1899 carbines are the same except for rear sight variations. None were built on M1896 actions!

There is no such thing as a "Model 1901 action". There IS a Model 1901 rear sight.

Brophy, knew what he meant, and, it wasn't what you seem to be getting out of it - you are just not yet reading it right, and I'm not sure why. BTW, I'm not trying to pick a fight, or belittle you - in any way. I'm just frustrated in not being able to find the right words to steer you to the correct interpretation.

I actually dug out my Brophy and found the production totals on page 16. I guessed fairly close - but again, that's not the issue. Please advise page numbers for your data. Thanks.