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Some questions about my new No. 10 MK III
Hi. I just acquired a 1910 MKIII.
I'd like to see if I can get some info on its possible background. The stock is unmarked and I see no signs of any stamps, cartouches, etc. In case it was sanded-I will try the black light method and see what I can find.
you can see pics of the rifle here-
http://www.gunbroker.com/Auction/Vie...Item=247768187
I have not disassembled the bolt but I cannot see that it is pinned or riveted. There is no LC marking on the chamber. The only other markings are the usual patent and proof marks, "D76" on the underside of the barrel shank, and a a small "o" and an "E" on the upper barrel shank. The bolt is numbered 725DO on the handle. The rifle does not have the swivel forward on the trigger guard. Any help or info on it's background is greatly appreciated.
The rifle is complete except that it is missing the rear receiver (action) screw . Numrich is out and I am looking for another source. Regular US sizes available at the local hardware stores don't seem to fit but it looks like a 6mm diameter of the right length might do in a pinch. Any help in finding an original is appreciated.
Thanks!
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09-22-2011 11:32 AM
# ADS
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"E" is one of the three marks denoting an enlarged chamber. If you shoot the rifle, examination of the first fired case will confirm the enlarged chamber. Don't shoot it without the rear receiver screw, of ocurse.
725DO could be part of the original stock stamped serial number, the date would be the third component. No idea who or when the bolt got numbered.
I might have a spare rear receiver screw for a Mk.III. Will check.
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Thanks-if you happen to find a spare screw-please drop me a PM.
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Guns have always used screws with finer threads than other machines. Check out just about any gunmarkers' taps nd dies: all just super-fine by comparison with NC and NF.
NICE thing is that all the screws on the Ross Rifle were made to US standards of threading: 60-degree V threads.
That means that, even though the screw might not be easy to FIND, it can still be MADE very easily on any lathe which is set up for inch measurement.... which means a lathe in just about any machine-shop in North America.
Sorry, but I don't have the specs handy right now.
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Still looking for an original screw but I found a 6mm by 60mm machine screw that will work as a substitute-took a bit of dremeling to get the screw head sized to proper dimensions but now she is ready to go to the range!