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  #21  
Old 10-06-2006, 09:57 PM
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I don't know if you've thought about it, but altering the magazines to fully function could be the achilles heel of the whole project. Owning 3 BLR's, I see no way you can open up a .358 magazine to anything larger. Browning never made any of the short magazines feed a belted case, only the long ones. I'm with leverite on this one. It would be easier and cheaper to sell this one and buy a .325 ready to go.
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  #22  
Old 10-07-2006, 01:01 PM
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Quote:
Originally Posted by Blackhawk44
I don't know if you've thought about it, but altering the magazines to fully function could be the achilles heel of the whole project. Owning 3 BLR's, I see no way you can open up a .358 magazine to anything larger. Browning never made any of the short magazines feed a belted case, only the long ones. I'm with leverite on this one. It would be easier and cheaper to sell this one and buy a .325 ready to go.
.

Browning chambers the 450 Marlin in a short action BLR. Using the 450 magazine should solve the problem since it is a very similar belted case.

Fred Zeglin at Z-Hat told me that the 358 magazine might work with a little alteration. He said that if I sent him the 358 BLR for conversion he would try to use the existing magazine.

A new rifle in 350 RM will cost $550-$650 plus tax. The conversion will cost:

Rechambering: $150.
Bolt work: $40.
Magazine (if needed): $50.
Round trip S&H: $40.

Total:..............$250. to $290.

$350-$400 more gets a new gun. Good point, Blackhawk44, but I will need that money to buy a good scope, dies and brass.
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  #23  
Old 11-03-2006, 11:02 PM
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Quote:
Originally Posted by leverite
Nitro...regardless if you can attain the elusive 3000 fps w/ a 200 grain bullet, I think your idea of converting to 350 Rem mag is very interesting.

Consider this...instead of reaming to 350 rem mag, ream out the .358 chamber to a 300 WSM or a 325 WSM size (I don't know if they are the same dimensions, as I haven't seen dimensions on the 325 WSM...obviously the necks will be different). I believe both the WSM's are chambered in the BLR short action.

The advantage is more case capacity and plenty of brass around for many years. The BLR .358 barrel may not be meaty enough at the chamber for this, but if it's the same barrel profile as the 300 or 325 WSM barrels, would think it would be OK.

waddayathink?
.

The 300 WSM necked-up to .358" is called the 358 Sambar. Below is a scanned page from "CARTRIDGES OF THE WORLD", 11th edition, 2006 by Frank C. Barnes.
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Rechamber .358 Win to .350 Rem Mag-358-sambar-35%25.jpg  
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  #24  
Old 11-05-2006, 01:04 PM
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Either way you are talking about an 06 case capacity, the good old much wildcatted .284 case bumped up to .358 is still a good option in a levergun running the approx same case capacity.
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  #25  
Old 11-05-2006, 08:47 PM
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Quote:
Originally Posted by Swany
Either way you are talking about an 06 case capacity, the good old much wildcatted .284 case bumped up to .358 is still a good option in a levergun running the approx same case capacity.
.

I have considered the 35-284 because no bolt mod would be required. It has the same rim diameter as the 358 Winchester but case capicity is 5 grains less than the 350 Rem Mag., which equates to approximately 100 fps velocity with a 250 gr. Nosler Partition, when both are loaded to the same pressure; 52,000 CUP.

HERE ARE SOME 35 CALIBER CASE CAPICITIES

35 Remington--------- 51.00 grains of water.
356 Winchester--------56.39 " " .
358 Winchester--------57.19 " " .
30-06-----------------66.58 " " .
35-284----------------67.29 " " .
35 Whelen-------------70.89 " " .
350 Rem Mag--------- 72.25 " " .
300 WSM--------------78.64 " " .
325 WSM--------------79.13 " " .
35 WSM-estimated-----79.65 " " .


Note that there is less than one grain of H2O capacity between the .356 and .358 Winchesters. What happened to the often touted difference of 5-6 grains between the two? It is said to be in the case wall thickness. However, they are almost identical, but that's a subject for another thread which I will initiate, unless the subject has already been posted. I'll give it a couple of days then go for it.

Meanwhile, back to the 35-284. The problem with it is the same as the 35 WSM / Sambar. No factory ammo. Since I am a hand loader, that in itself doesn't concern me. The resale value/desirability of the rifle will be higher chambered in a caliber that ammo is available for, even if it is just one factory offering.

Anyway, an elk at 200 yards won't know the difference when hit with a 250 grain Nosler Partition from a 35-284 @ 2400 fps, 350 RM @ 2500 fps or 35 WSM @ 2600 fps (BLR 20" barrel. Velocities higher in a 24" barrel). NOTE: Velocities at muzzle.

Is all this really worth it? Will that same elk at 250 yards know the difference when hit with that same 250 grain NP with a 358 Winchester @ 2250 fps MV. I really don't know. But that's where the fun comes in. Finding out.
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Last edited by NITRO; 11-05-2006 at 08:53 PM. Reason: Added note.
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  #26  
Old 12-16-2009, 11:22 PM
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So Nitro,
I have to know if the .350 Rem Mag BLR ever came to be? I came across this thread while searching for something else, and being a 358Win and 350 RM shooter I was curious.

Thanks

Alek
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  #27  
Old 12-17-2009, 07:12 PM
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I just found this as well. Now my interest is peaked. What happened? Did it work??
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  #28  
Old 12-18-2009, 05:13 PM
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Quote:
Originally Posted by NITRO View Post
I have three questions:

1. What's the highest velocity that you have attained with your .358 Winchester and a 200 grain bullet. Please indicate load data and barrel length.
Nitro:

I have a load that yields around 2700 fps with the Remington 200 gr PSP, using IMR 3031. It's listed in the Loadswap section of this site.

It was safe in my rifle. (Ruger M77 Hawkeye with 22" barrel)
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