.303 M-10s?

[Toffee]

Were the M-10s ever made in .303 or are those examples of subsequently modified rifles?

Based on the sources I have consulted (mostly Wikipedia) it seems they were only made in the Ross rifle calibre.

Information

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[NORTHOF60]

The .303 British and .303 Ross are the same cartridge. The only difference is that .303 Ross chambers and ammunition were kept to target grade standards until WWI.

[Toffee]

* deleted

[Surpmil]

I'm thinking you probably mean was the M10 .280 sporting rifle ever made in .303 in the same general configuration and with a similar level of finish?

The answer is basically yes, that rifle was called the E10 or 1910-E depending on the sources. (Photos attached)

The base model sporter in .303 on the 1910 action was the R10 or 1910-R.

The same stratification was offered in the sporters previously built on the MkII or 1905 action.

The 1910-E was also built in .35 Whelen, but in very limited numbers.

[Toffee]

I'm thinking you probably mean was the M10 .280 sporting rifle ever made in .303 in the same general configuration and with a similar level of finish?

The answer is basically yes, that rifle was called the E10 or 1910-E depending on the sources. (Photos attached)

The base model sporter in .303 on the 1910 action was the R10 or 1910-R.

The same stratification was offered in the sporters previously built on the MkII or 1905 action.

The 1910-E was also built in .35 Whelen, but in very limited numbers.

The question was caused by seeing an M-10 in .303 (or what was called an M-10 anyway) which I thought would not have existed, but I suppose if it is an M-10 then someone converting it to a calibre with more readily available ammunition is not unlikely either.

[NORTHOF60]

Surpmil, I've never read anything about a Ross rifle factory chambered in .35 Whelen. I'm only aware of the .280 Ross, .303 Brit/Ross, .354 Ross/Eley (experimental), .35 Winchester, and the .370 Express/Kynoch .375 2.75" Nitro Express. I wasn't aware of this chambering being offered in any factory rifle until Remington legitimized it in the '80s. A great cartridge, even if it is a clone of the 9.3x62 Mauser.

[Surpmil]

You're quite right! It was .35 Winchester - not sure where that came from now!

[Surpmil]

Without seeing photos it would be hard to say more, but the most likely scenario is a 1910-E. Not a common rifle, even among Rosses.

[NORTHOF60]

I agree, photographs would be very helpful. I believe we are talking apples and oranges. You may find the attached excerpt interesting from "doublegunshop"https://www.doublegunshop.com/forums...45361&page=all

[Toffee]

I agree, photographs would be very helpful. I believe we are talking apples and oranges. You may find the attached excerpt interesting from "doublegunshop"https://www.doublegunshop.com/forums...45361&page=all

Well we certainly thought it was an M-10, it's not as pretty as the one in the pictures but the labeling was the same.

I shall try to obtain pictures, I'm not 100% sure on the magazine anymore - I assumed all M-10s were sporters (and M-10s) but apparently the military ones were also labeled M-10? Interesting.