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Making a new one: 375 Ruger

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/27/2009 at 12:49
sakomato View Drop Down
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Bought a slightly used Winchester Model 70 post 64 in 264 win mag at a good price.  The mag length is 3.400" and I don't need a 264 since I have a 6.5 rem mag that will push 140 gr bullets over 3000 fps which is enough for me.

So I started thinking and came up with the brilliant Big Grin idea Thinking of making it into a 375 Ruger
 
Supposedly this caliber will shoot a 260 gr Accubond at 2900 fps and that should be a real show stopper!  Reloader
Going to use a Pac-Nor #5 contour 3 groove 1 in 12 select match CM barrel and have it cut off at 24" no brake.  Weight is not a concern and will help with recoil.
 
Maybe a laminate stock by Accurate Innovations
 
 
Ghost finish, ebony end cap and grip cap, fishscale checkering, shadowline cheedpiece
 
 
Maybe a 1.5x5.5x38 Conquest.
 
Any suggestions?


Edited by sakomato - June/27/2009 at 12:50
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/27/2009 at 13:34
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Sounds like a great plan to me, Bob!  The .375 Ruger is an intriguing cartridge.  I like your scope choice for that rifle, too.  Or, perhaps the 2.5-8X32 Conquest. 

If it weren't for the fact your rifle is a M70, I have an Accurate Innovations stock very close to what you describe (shadowline cheekpiece, fishscale checkering, ebony forend and grip cap) I'm thinking of selling.  But, it's for a M700 LA and the wood is AAA Claro instead of laminated.  It was intended for a rifle project I was working on but I changed my mind mid-stream and opted for a synthetic stock, so it currently doesn't have a home.


Edited by RifleDude - June/27/2009 at 13:40
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/27/2009 at 21:09
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your overall cartridge length in 3.34, which is 0.06 inches short of your magazine length.  if you load your shells to SAAMI specs or purchase shell you will be fine.  however, if you load to your specific chamber length, on the lands and grooves or off by what ever you choose, 0.1-0.04 inches for example, then it is entirely possible that your overall cartridge length could, but not necessarily so exceed your magazine length.  just something to think about.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/28/2009 at 08:42
sakomato View Drop Down
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Originally posted by mastsif man mastsif man wrote:

your overall cartridge length in 3.34, which is 0.06 inches short of your magazine length.  if you load your shells to SAAMI specs or purchase shell you will be fine.  however, if you load to your specific chamber length, on the lands and grooves or off by what ever you choose, 0.1-0.04 inches for example, then it is entirely possible that your overall cartridge length could, but not necessarily so exceed your magazine length.  just something to think about.
 
No, that is not correct.  As with my other custom rebarrels, I will send an unprimed case with a bullet seated to the proper OAL and tell the gunsmith where to set the beginning of the lands.  The question is which bullet to use.  Since different bullets seated to the same OAL will have different jumps, I need to pick a bullet that will have the ogive closest to the meplat so that the gun would be safe for any factory ammo.  I suspect that will be a large roundnose.
 
Problem is having to buy a box of bullets just to seat one for the gunsmith to set the lands.  I could say the hell with it and just seat the Accubond where I want it and tell him to set the lands for a .030" jump but the Accubond is much longer (especially with the plastic tip) and that could cause a large roundnose factory bullet (which I will never shoot but some may in the future of the gun) to be against the lands.
 
Part of the fun of this is figuring all this out.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/28/2009 at 19:51
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Originally posted by sakomato sakomato wrote:

Bought a slightly used Winchester Model 70 post 64 in 264 win mag at a good price.  The mag length is 3.400" and I don't need a 264 since I have a 6.5 rem mag that will push 140 gr bullets over 3000 fps which is enough for me.

So I started thinking and came up with the brilliant Big Grin idea Thinking of making it into a 375 Ruger
 
Supposedly this caliber will shoot a 260 gr Accubond at 2900 fps and that should be a real show stopper!  Reloader
Going to use a Pac-Nor #5 contour 3 groove 1 in 12 select match CM barrel and have it cut off at 24" no brake.  Weight is not a concern and will help with recoil.
 
Maybe a laminate stock by Accurate Innovations
 
 
Ghost finish, ebony end cap and grip cap, fishscale checkering, shadowline cheedpiece
 
 
Maybe a 1.5x5.5x38 Conquest.
 
Any suggestions?


i could always use another .264win mag, but i think your plan will turn out to be a nice rifle!! good luck robert!
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/28/2009 at 21:06
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Dolphin Overton

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Originally posted by sakomato sakomato wrote:

Originally posted by mastsif man mastsif man wrote:

your overall cartridge length in 3.34, which is 0.06 inches short of your magazine length.  if you load your shells to SAAMI specs or purchase shell you will be fine.  however, if you load to your specific chamber length, on the lands and grooves or off by what ever you choose, 0.1-0.04 inches for example, then it is entirely possible that your overall cartridge length could, but not necessarily so exceed your magazine length.  just something to think about.
 
No, that is not correct.  As with my other custom rebarrels, I will send an unprimed case with a bullet seated to the proper OAL and tell the gunsmith where to set the beginning of the lands.  The question is which bullet to use.  Since different bullets seated to the same OAL will have different jumps, I need to pick a bullet that will have the ogive closest to the meplat so that the gun would be safe for any factory ammo.  I suspect that will be a large roundnose.
 
Problem is having to buy a box of bullets just to seat one for the gunsmith to set the lands.  I could say the hell with it and just seat the Accubond where I want it and tell him to set the lands for a .030" jump but the Accubond is much longer (especially with the plastic tip) and that could cause a large roundnose factory bullet (which I will never shoot but some may in the future of the gun) to be against the lands.
 
Part of the fun of this is figuring all this out.
By your statement you are stuck with whatever bullet you choose.  What is your "proper OAL".  SAAMI specs?  When reloading for many rifles, I have many that far exceed SAAMI specs and some, not many that fall short, when setting the ogive out to the lands and groves or somewhere short.  I would bet you will bet you will be left shooting whatever bullet you set the gun up for.  A nice model 70 in a 264 win. mag, despite a post-64, I would leave in that caliber and enjoy it, even if you have another 6.5 Remington Magnum that in all reality can duplicate the ballistics of the former.  There is never such a thing a too many 6.5s.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/29/2009 at 22:54
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Sakomato, that is a good plan you have. Is it a push feed 70? I read they had better accuracy potential over the CRF Classics, but I don't really know.  Anyway, try a chamber throat compromise between the 260 gr NAB and a Woodleigh 300 gr Protected Point Weldcore. That should cover most of the bases and the bullet lengths should be compatible I'll bet. I have a hundred of each flavor on the way, I'll measure 'em with the ole Stoney Point gage when they get here and let ya know. My new 375 is a Holland and Holland flavor, though, and I sure will be glad when I get my hands on it! By the way, the 338 Woodleighs shoot pretty good at 250 grains in my A-Bolt WinMag - I hope to try them and like them in the H&H real soon...
 
Regards, Texas
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/30/2009 at 00:00
sakomato View Drop Down
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Yeah, it's a push feed.  Looks pretty good with a jeweled bolt.
 
Was thinking about buying a box of 300 gr el-cheapo Sierra/Hornady/Speer bullets just to try to visualize any problems.  I can't see me shooting anything over a 270 gr TSX and may even try some 250 gr GS Custom bullets ($2.00 each Shocked)
 
Woodleighs are not cheap either! 
 
Barnes makes a 255 gr "Original" which has a lead core.
 
Swift A-Frame 250 gr at 2900 fps or maybe as high as 3000 fps! 
 
Wow, lot's of choices.
 
 


Edited by sakomato - June/30/2009 at 00:01
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/30/2009 at 00:47
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So I started thinking and came up with the brilliant Big Grin idea Thinking of making it into a 375 Ruger

 
Supposedly this caliber will shoot a 260 gr Accubond at 2900 fps and that should be a real show stopper!  Reloader
Going to use a Pac-Nor #5 contour 3 groove 1 in 12 select match CM barrel and have it cut off at 24" no brake.  Weight is not a concern and will help with recoil.
 
Maybe a laminate stock by Accurate Innovations
 
 
Ghost finish, ebony end cap and grip cap, fishscale checkering, shadowline cheedpiece
 
 
Maybe a 1.5x5.5x38 Conquest.
 
Any suggestions?
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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/30/2009 at 09:01
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I would just tell the gunsmith to use a reamer with the factory throat. The Ruger Hawkeye's own magazine is about 3.4" long and works fine with both spitzer and round-nose bullets of various makes. I had an African Hawkeye .375 Ruger one for a while and it was easy to load for.

I doubt that a little bit of extra bullet jump with a longer-ogive bullet (like a 260 AccuBond is going to make any significant difference in accuracy, especially from a custom chamber. Unless, of course, you intend to shoot prarie dogs with the rifle, not BIG game.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/30/2009 at 20:45
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Now that is very helpful information, knowing the Ruger Hawkeye magazine is 3.4 inches long.  I believe that cinches the deal for me.  Let us know how everything goes and please post some pictures and targets when everything is complete.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/30/2009 at 21:23
sakomato View Drop Down
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Hmmmmm......prairie dogs.

Have you ever seen the video of the guy shooting prairie dogs with a 50 caliber??  Did a good job, not too many crawled away.

What load did you shoot in your 375 Ruger, JB?  What do you think about the #5 Pac-Nor 3-groove?

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