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Thread: Rechamber Ruger No.1 9.3x74R ?

  1. #1
    Boolit Master Good Cheer's Avatar
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    Rechamber Ruger No.1 9.3x74R ?

    Any yall ever rechambered a No.1 to a larger 9.3 cartridge case?

  2. #2
    Boolit Master Outpost75's Avatar
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    Why? Isn't the 9.3x74R large enough? What case would you use?
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    Boolit Master Good Cheer's Avatar
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    Good questions to add to mine.

  4. #4
    Boolit Master Drm50's Avatar
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    I saw a #1 for sale at a show that was rechambered for a odd ball 9x ??, that was a rimless case
    and done on a 375H&H so it must have been .375 cal.

  5. #5
    Boolit Master
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    I can't imagine why I would need a more potent 9.3 than the 9.3x74, especially a wildcat, but I suppose that it could be done. I've taken several elk with mine and find it quite satisfactory. Perhaps my reasoning is colored by the fact that If I think I need more I can step up to several rifles of greater power.
    BIG OR SMALL I LIKE THEM ALL, 577 TO 22 HORNET.

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    Boolit Master Texas by God's Avatar
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    .366 H&H? What case would be long enough to clean up the chamber?

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    Boolit Master

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    Many years back I worked on re-barreling a #1 in 577 Nitro. Someone had already converted it and I was just installing a new longer barrel. The action had to be opened up to except the larger rim and the top of the breach was also cut down. It was a little scary to look at, the top of the rim could be seen when the breach was closed. I was offered a chance to test fire it but I declined. At that time the cartridge was $34.50 each. I'm working on one now in 50-70 which also required the action to be opened up a little to clear the rim. My thoughts are, if you like lots of recoil, go for it. I still have memories of touching a #1 off that was chambered in 450 -3 1/4 nitro. It had a 30" barrel and was not a light gun but it sure hurt.

  8. #8
    Boolit Master

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    I have a #1 in 50-70. Loaded with 850gr boolits I designed for the 50 bmg, it is really accurate, will cloverleaf 3 @100yds. Unfortunately, all I can stand is 3 shots, the recoil is so bad. Older now, not shooting those again!!

  9. #9
    Boolit Master MOA's Avatar
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    If you have a big bore that hurts, try stuffing it with trailboss. Lots more fun then. But.......back to your question, you could look at maybe a 50-140. I decided a few years ago that if my 9.3x74 was not sufficient, I would pull out the 450/400 3" nitro. If that didnt work I would start running.lol

  10. #10
    Boolit Master MOA's Avatar
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    If you have a big bore that hurts, try stuffing it with trailboss. Lots more fun then. But.......back to your question, you could look at maybe a 50-140. I decided a few years ago that if my 9.3x74 was not sufficient, I would pull out the 450/400 3" nitro. If that didnt work I would start running.lol

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  11. #11
    Boolit Master Good Cheer's Avatar
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    I'm probably never going to shoot it much with anything but slow trickled FFg and paper patches any how.
    But looking at the case configuration got me to wondering.

  12. #12
    Boolit Master Good Cheer's Avatar
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    Once upon a time my .375 Winchester No.3 became a .375 H&H.
    I made a big mistake in not trying it with black and patching.

  13. #13
    Boolit Master
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    I've batted around the idea of rechambering one to 360 No.2 Nitro Express.
    It's pretty much a 450/400 3" case necked to .366" shooting a 320gr bullet. I have a double in that chambering and it is a very impressive cartridge.
    The stock 9.3x74R barrels are pretty short though, a 26" or 28" barrel would give the rifle the proper look IMO.

  14. #14
    Boolit Master
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    Correct me if I'm wrong, I'm no expert on the cartridge, but cant' the 9.3x74 be loaded a shade hotter than conventional data because it is in a #1 and not a drilling of some sort?
    Also, seemed to me that it had a LOT of body taper, perhaps a 9.3x74 A.I.? I'd not think case strength would be an issue as St. Elmer did his .338x74 Keith on a #1 years ago, and, well, he didn't blow it up anyway.
    Just thinking out loud. It's likely better the way it is for cast. Likely far better the way it is for cast and black powder. Though with smokeless and jacketed, it could be a whole nother sort of hammer.......on both ends.......

  15. #15
    Boolit Master
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    I once was the proud owner of a Number 1 Ruger in 416 Rigby that kicked the living crapola out of me. It was not fun with full house loads at all. Nice rifle with great figure I had it engraved but sold it. OUCH

  16. #16
    Boolit Master



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    Good morning
    We shoot a 1885 Winchester Repro in 375 H&H with 300 and 335 GC at 2300 fps and find it rather fun to shoot. I seriously do not think there are too many critters going to absorb many of those slugs and mossy down the trail very far.

    And your 9.3x74 is very much able to equal those parameters. Reason we got the 375 H&H is due to us having a box full of caliber 38 molds. NOE has a pretty good selection of 9.3 heavy slugs that will eradicate most known critters still walking about. Plus with just some typing paper wraps you can go to full power crushers.
    Mike in Peru
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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check