Thought I'd post some photos of vintage ammo I have for my rifle. I don't collect ammo, so the 100+ mixed rounds I have will eventually get shot to harvest the barass for reloading. I have the redding dies, Lee factory crimp, and lots of the plated 180gn bullets from Grafs.
First off, here's a shot of the difference between .35SL and .351SL. the former is unique to the Model 1905 self loading rifle, and latter is unique to the 1907 self-loading rifle.
Headstamps of these 2 vintage rounds:
And here's a mix of the headstamps I have available for .351 SL ammo. I've got early Western ammo, slightly later Winchester Repeating Arms marked ammo, Peters ammo that pre-dates Remington and Peters merging, and some later Remington UMC ammo.
Some weird history - What today is the Olin corporation was founded in 1898 as the Western Cartridge Company. Western itself was the merger of two companies, both founded in 1892: Franklin W. Olin's Equitable Powder Company and the Mathieson Alkali Works. All owned by the same family. This concerns competed with Winchester's and Remington's ammunition subsidiaries, often fiercely. Interestingly, Western was healthy enough to buy Winchester in in 1931 when Winchester went into receivership that year. In 1935, the companies were merger by patriarch Franklin Olin in 1935, forming Winchester-Western.
The Peters Cartridge Company was founded in 1887, but went out of business in 1944. At some point Remington acquired the brand name Peters and made Peters ammo into the 1970's.
Union Metallic Cartridge Company (UMC) was founded in 1867, and merged with Remington Arms in 1912, after which ammunition produced by Remington was marked REM-UMC. Remington used this headstamp on a variety of ammo until 1970.
All the vintage .351SL ammo I have is cupro-nickel jacketed 180gn soft point. Cupro-nickel fell out of use in US made commercial ammo generally in the 1920's, so I suspect all this ammo if from the 20's or earlier, but not earlier an 1912 in the case of the REM-UMC stuff.
The ammo came with the rifle I bought, which was dated 1922, so I'm guessing the ammo is all in the 1922-1929 range. But will never know for certain.