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  1. #1
    Legacy Member mr humble's Avatar
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    Upgrading the 1910 sporting rifle with optics

    Since somebody, who won't step up and admit it or say why, closed my last post on this subject, here it is again. Can only wonder if Facebook now owns this forum !

    Scoping a M-10 Ross

    Got my M-10 back from Oregongunsmithing.

    It now has a brand new .308 bore from the rusted nasty .287 that it was.



    Mine is the 28" bbled model w/o the flip up sight on the rear receiver ring.

    Thought long and hard about the best way to scope it. The front ring is round, the rear flat.
    Digging in my box of Weaver bases I came up with a #45 and #48. The 45 countour was almost perfect so I put a piece of fine emery, abarasive up on the front ring and countoured the base to the ring. The 45 was filed flat on the bottom to fit the rear ring.

    To get it right a long tube scope was mounted in 2 rings, the rings clamped to the bases, the bases set in place. The scope reticle was set at the center of it's range. With the rifle in a cleaning rest, 2 drops of gorilla glue was put on each base and a bore sighter installed. The rig was moved until it was close to centered left to right.

    Let the glue dry and recheck the bore sighter.

    If all is good, now you can drill and tap the rings and complete installation.

    I used a Weaver J2.5 with a 6X Litscherts converter as it mounts low and has a long tube.

    You can see the "308/280 Ross "being extracted.
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    Legacy Member steveu's Avatar
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    I am interested in your range results with the re-bored barrel.

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    Contributing Member NORTHOF60's Avatar
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    I was following your previous posts with interest.

    The Ross sporting rifle tends to be something of an icon, particularly the .280 Ross. Individuals interested in the Ross are more likely to want to conserve or rebuild the rifle to original specifications. Nothing detracts more from the value of a vintage rifle than drilling holes in the receiver. The exception would probably be a custom side mount installed by a known English gun smith. It could be snob appeal, but more likely because the scope could be quickly removed to use iron sights, and sniper variations used side mounts.

    I've also seen rifles with Weaver bases, and bases soldered to the receiver. That being said, some very inventive, and non-invasive methods of scope mounting have been utilized on the Ross rifle. I have a Ross scoped with custom claw mounts. The original sights had to be raised a quarter of an inch to be seen. The front mount is clamped to the knox form.
    Some do, some don't; some will, some won't; I might ...

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    Advisory Panel browningautorifle's Avatar
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    Quote Originally Posted by mr humble View Post
    Since somebody, who won't step up and admit it or say why, closed my last post on this subject, here it is again. Can only wonder if Facebook now owns this forum

    Read the last post (11) of the thread and you'll see what you did and why it was closed. It's written in clear... https://www.milsurps.com/showthread....l=1#post502320
    Regards, Jim

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    Advisory Panel Surpmil's Avatar
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    Too late now Northof60!
    “There are invisible rulers who control the destinies of millions. It is not generally realized to what extent the words and actions of our most influential public men are dictated by shrewd persons operating behind the scenes.”

    Edward Bernays, 1928

    Much changes, much remains the same.

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    Legacy Member boltman's Avatar
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    Quote Originally Posted by mr humble View Post
    It now has a brand new .308 bore from the rusted nasty .287 that it was.
    I've often wondered if after boring .287 up to .308 - results in enough metal removed to completely remove the grooves? It sounds like the fact that it has been done answers that question.

    Another question - can anyone think of a workable commercial (i.e. non-wildcat cartridge) that the .280 Ross can be rechambered and rebored to? What are the opinions on how large a bore could be made given the thin countour and taper of the M-10 barrel? At one time, I thought perhaps the .375 Ruger. I thought because it appears the .375 Ruger is the best casing among the various choices to make .280 Ross brass. However, I suspect the .375 bore size is too large. Ruger makes a .300 and a .338 using their .375 as a parent case. However, these are "compact" magnums and the case would be too short (unless you wanted to set the barrel back and that were result in a host of new problems). Would the .300 H&H or other similar belted magnum cartridges work? On the one hand, I've used various belted magnum cases (e.g. 7 mm Remington and Weatherby magnums, .300 Win. and H&H magnums) to make .280 Ross brass. They chamber without turning the belt off. These means that an area forward of the belt is not supported by the chamber. They work fine and it is common practice to do this, so what would be the difference if if the rifle were turned into a .300 caliber belted magnum? I suppose it would mean when the chamber is cut, a portion of the chambering reamer would not be touching the chamber walls and a portion of the chamber would be left oversize. I'm not a gunsmith and don't even play one on television. And, I only think of this topic in relation to rifles that have condition or alteration issues already and make for poor collector items.

  12. #7
    Legacy Member mr humble's Avatar
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    IMHO Ross sporting rifles are not a hot collectible as evidenced by prices realized in auctions by the major auction houses.

    Any rifle with a sewer pipe bore is useless as a shooter and sights that cannot be seen add to the problem.

    Hence I rebored it and added a scope (more later on that)

    If at some unforseen future date when a rifle like this occupies the same value as a Zischang engraved Pope barreled Ballard 6 & 1/2, the new owner could have the barrel relined to 280 Ross and any holes made invisible by welding (See D. Turnbull) (Although the price of said Ballards has dropped 50% in the last 10 years as few know and fewer care.)

    Meanwhile, I want to shoot it and Changed my mind.
    Removed rear ring male dovetail and filed ring flat
    Went thru boxes and more boxes of bases and rings.
    In Leupold turn ins, found M96 Mauser for front and unknown but low rear.
    Added some old Redfield 1" rings and a Leupold VX III 6.5-20x40 that JUST clears the rear sight.





    308 Ross vs 300 Win Mag

    Last edited by mr humble; 07-18-2021 at 02:59 PM.

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    Legacy Member boltman's Avatar
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    The photo above prompts me to remember that when using .300 Winchester magnum cases to form .280 Ross, they end up a bit short.

    I have no objection to the modifications you made to your rifle. You made it usable. The M-10 is the most commonly encountered of the Ross sporting rifles. So unless you have an M-10 in high condition, it's not going to be worth much to collectors. And of course even in high condition, they don't bring the kind of money many other collectable rifles from that era often bring. Yours is an interesting project and I enjoyed reading about it.

  14. #9
    Legacy Member mr humble's Avatar
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    Workable cases can be made from 300 WinMag but case head is unsupported in front of belt and cases too short.

    A better case can be made for 375 Ruger brass, but a lot of work compared to $2.89 each for ready to load from Buffalo Arms.

  15. #10
    Legacy Member mr humble's Avatar
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    Tried 54 gr 4350 and some 180 gr Hornady blems @100.
    Pinweight bbl really heats up !
    8 shots, best 4 were 1st 4.
    2" x 2"


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