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  #1  
Old 07-27-2009, 05:35 PM
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375/325 WSM. for Browning Lever Rifle


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This wildcat came about as part of a discussion I started on an Australian website and I want to reach a larger audience and cross reference ideas..who knows maybe hear from someone who has done it.

Quote:
Hey fellas this may be a moot topic because Browning may just decide that the BLR could be an ultimate guide gun and do this for me BUT just in case. Would be a fantastic Sambar rifle. I think that the .375 will be a fantastic cartridge.

Can anyone offer some starting points to carry out such a conversion and if they see any issue....eg action not strong or big enough etc. I think it would be strong enough and big enough but haven't researched the idea fully.

Would a new barrel be required as well as rechambering? Which chambering would you start with?? The .325 WSM or the .358 Winchester round ?? Other?

Cheers
As you can see I would prefer to go the .375 Ruger round for a BLR but am intriqued by the conversion idea of the .325WSM to a .375

What do you blokes reckon?

Link to that conversation http://www.australianhunting.net/ind...93.0;topicseen

Last edited by locutius; 07-27-2009 at 05:37 PM. Reason: adding link
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  #2  
Old 07-29-2009, 11:11 AM
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IMHO, 375 is great, but more than most of us need. The 358 might be optimum. If you started w/ a WSM rifle the boltface and magazine should work as is. Then you'd need to bore/rechamber the barrel.
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  #3  
Old 07-29-2009, 03:16 PM
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Thanks for the reply Leverite,

Yes I was toying with the idea of the .358 conversion as an option. If memory serves Winchester were considering a .358WSM or at least many gun writters were saying it was the logical next step.

I think it would actually be a fine cartridge and would handle anything in Australia including Water Buffalo under most situations. Many would say it would still be a bit light as a guaranteed dangerous game stopper for which the .375's Magnums are usually considered a minimum.

Apparently in the continued conversation on the Aussie site the .375/325WSM conversion has already been done by someone here and it has been named (at least locally) the .375 Australian Stalker.

I do think your suggestion has legs though and will consider it.

BTW Browning if you are listening.....375 Ruger BLR. Guide Gun par excellence!!
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  #4  
Old 08-03-2009, 01:56 PM
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375x300wsm

Quote:
Originally Posted by locutius View Post
Thanks for the reply Leverite,

Yes I was toying with the idea of the .358 conversion as an option. If memory serves Winchester were considering a .358WSM or at least many gun writters were saying it was the logical next step.

I think it would actually be a fine cartridge and would handle anything in Australia including Water Buffalo under most situations. Many would say it would still be a bit light as a guaranteed dangerous game stopper for which the .375's Magnums are usually considered a minimum.

Apparently in the continued conversation on the Aussie site the .375/325WSM conversion has already been done by someone here and it has been named (at least locally) the .375 Australian Stalker.

I do think your suggestion has legs though and will consider it.

BTW Browning if you are listening.....375 Ruger BLR. Guide Gun par excellence!!
I have done the 338 X 300WSM and the 358 X300WSM which someone else did first and named it the 358Sambar. I do not know if the Browning application will work or not. Not sure if it will handle the pressure of the short mags.

I have applied the 338 & 358 rounds very nicely to my Savage Striker handguns. Very happy with ballistics from the short tubes. Shooting a 270 grain bullet with the powder capacity of a short mag I am thinking I personally would be dis-satisfied with the ballistics. That is just me and my needs though.

Neal
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  #5  
Old 08-03-2009, 04:06 PM
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Why not just go with the 376 Steyr?
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  #6  
Old 08-04-2009, 10:16 PM
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Quote:
Originally Posted by AlleninAlaska View Post
Why not just go with the 376 Steyr?
.


Good suggestion, however, the .376 Steyr would require the long action and the .375/325 the short action. I have hunted with both and the long action versions are indeed long and very heavy. If weight is not a factor and it is desired to soak-up recoil then go for it.

The least expensive way to have a short action, long range "heavy caliber" BLR-LW is to rechamber a .358 Winchester BLR to .350 Remington Magnum. All you need to do to the .358 is bore-out the chamber, change the bolt head and magazine to the ones made for the .450 Marlin, then check head spacing with "go" - "no go" gages......... Done deal. Now you have a short, handy thumper that has factory ammo and brass available.
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  #7  
Old 08-04-2009, 11:06 PM
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Thanks guys, good suggestions all.

The Browning does ondeed come in the WSM chamberings, .270WSM, 300WSM and the .325WSM so the action will handle those pressures.

This is the easiest conversion I think going up to .358 or .375 with the .325WSM as the parent cartridge. It appears that some gunsmith/s in Oz already have access to reamers and dies for the two options above. I expect with the short action I will sacrifice the ability to take FULL advantage of the longest and heaviest bullets in these calibres.

The Browning at this stage does not come in the .376 Steyr and is more likely (I've made three wishes) to come out in the .375 Ruger down the track than the Steyr but there is no guarantee of that...it's just conjecture due to a resurgence of interest I have noticed in the BLR; maybe due to the growing interest in lever guns in general. Don't get me wrong the .376 is a strong and respectable cartridge.

The .350 Remington has a lot going for it as well as an option except one (personal) gripe. It's belted. And while issues with belted cartridges may be exagerated, I can't help think that where there is smoke there is fire. And I need to simplify the reloading process and the cost factor (ie case life) as much as possible.
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  #8  
Old 08-10-2009, 03:28 PM
CTD CTD is offline
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Browening Lever Rifle

Which rifle are you starting with?
if it has a .473 bolt face you could consider
There are no loads available for the
.375-284



SPECIFICATIONS

Bullet Diameter:
.375 in.






Case Capacity (est):
68.9 gr. water



NOMINAL PERFORMANCE

Bullet Weight:
300 gr

Muzzle Velocity:
2230 fps

Muzzle Energy:
3314 ft-lbs


or a larger blt face ie 376 Steyr Short= .494 bolt face, case ltg.=2.02
375 Bellem rimed at .514, 2.248 case ltg
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  #9  
Old 08-23-2009, 09:21 PM
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Wink

Sorry for the delay in getting back guys.

CTD, the rifle I'd really like to do this in is the Browning BLR. Which is now available in .325WSM.

It would probably handle a rebore to .358 but I don't think it would handle a rebore to .375.

There is also the .458 Alpine that really intrigues me as well but I would definitely be looking at a new barrel and some of the blokes on the Aussie forums reckon it might be a bit tricky in the way that the forward grip nests and is a part of the barrel.

From exploded view diagrams, I can't see where though.

I love the idea of doing a family of 300/325WSM wildcats especially the 458 Alpine. You see, I'd love a 50 Alaskan to play with but honestly by the time I got it into Oz, I'd be looking double what you blokes would pay for it and I can build a levergun with almost 458 WinMag performance and still have change for 500 cases and dies.

Never giving up on the 50 Alaskan though
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  #10  
Old 08-30-2009, 02:24 PM
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A rebarrel on a late model BLR could be tricky since the bolts locks into a barrel extension since the transition to the "lightweight" action. This makes a rebore of the present barrel a far more practical endeavor. Remember that with all BLR conversions, the final cartridge design must be based on an existing BLR magazine. "Converted" or adapted magazines have a record of failure.
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  #11  
Old 08-30-2009, 10:04 PM
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Thanks Blackhawk and it is timely that you bring the reciever into the equation because the more I think about the Aluminium reciever in the Browning the more I don't like the idea especially with a moderate/heavy recoiling cartridge that will develop substancial pressures.

Been thinking .... bolt gun. Barrel jobs easy, strong actions in any of the major brands, range of plug and play accessories such as after market triggers, stocks etc..I just like the idea if the BLR as a workhorse rifle with a fast action and bolt gun accuracy... I'd still consider one in a mild shooter like a 308 or 270.
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  #12  
Old 08-31-2009, 10:19 AM
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The BLR aluminum receiver is not an issue regarding strength since the bolt locks directly into the barrel extension. As I said, a rebore is more practical than a rebarrel while an existing gun in the caliber you want is the best answer of all.
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