Interesting UMC 1900 7x57


#1

A friend got a “new” FN49 rifle and asked me if I had any 7mm Mauser ammo he could shoot. I told him all I had was a bunch (60 rounds) of old UMC 1900 rounds. He took them figuring that at least he got 60 bullets for reloading. I kind of assumed they would be Boxer so that he might be able to reload a few cases also.
Well, today he told me they shot really well, and they were about half-and-half Boxer and Berdan! I was very surprised by both bits of news.


#2

Is there any special significance of the “1900” in the headstamp?
Is it just the year of production?


#3

Pretty sure it’s just the year.


#4

Is it not possible these 7m/m cartridges were a mixed lot and that the Berdan-primed rounds were in fact not UMC? Jack


#5

No, all identical brothers and sisters.


#6

Well, that’s interesting. If I have a spare of that headstamp I would be tempted to pull the bullet & have a look. Thanks, Jack


#7

Well, I have 9 more in my dupes, but I don’t know how to tell which might be Berdan and which Boxer!