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  #1  
Old 09-13-2005, 07:35 PM
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358/284 Blr


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Anyone have information on converting a BLR in 358 Win. to a 358/284 Win.? Seems it should be just a chamber job and maybe some magazine and/or feeding rail work. The load data I have seen would indicate a good elk, moose, etc. loading in a lever gun. Around 2700 fps with a 225 bullet. The round is the same head diameter and OAL as the 358 winchester. I have seen load data for the 338/284 also, but it would require a barrel change. Leverfan
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  #2  
Old 09-13-2005, 09:26 PM
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Re: 358-284

Quote:
Originally Posted by LeverFan
Anyone have information on converting a BLR in 358 Win. to a 358/284 Win.? Seems it should be just a chamber job and maybe some magazine and/or feeding rail work. The load data I have seen would indicate a good elk, moose, etc. loading in a lever gun. Around 2700 fps with a 225 bullet. The round is the same head diameter and OAL as the 358 winchester. I have seen load data for the 338/284 also, but it would require a barrel change. Leverfan
First - sounds like a good round. I have a 338-284 on a Mexican Mauser action. It has taken quite a bit of work to get that rifle to feed well. I'd be sure that I got the magazine issues well worked out before I recut the chamber - just based upon the issues that I've experienced with feeding problems in my own 338-284.

Anyway - good luck on your project gun - sounds like a great thumper !!!
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  #3  
Old 09-14-2005, 08:05 AM
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never thought about that one. I built a few 375/284's on Savage 99's and they worked out pretty good.
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  #4  
Old 09-14-2005, 02:47 PM
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Using original .284 magazines has to be cheaper and more reliable than reworking .308/.358 mags.
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  #5  
Old 09-14-2005, 04:26 PM
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I have a .358 in the original BLR ( pre '81 ) style and a .284 in a BLR-81. The magazines are quite different. I had a difficult time finding a spare 284 magazine for my post '81 and have never seen a 284 magazine for the earlier model. Modifing your present 358 magazine will be extremely difficult.

With a 20 inch barrel the difference in velocity probably will not be worth the time and expense. I'm taking my 358 to Colorado next month with cartridges loaded with the Sierra 225 gr Game King at about 2400 fps.

Brass for both cartridges is getting harder to find. The 358 of course can be necked up from 308 Winchester, however, in the case of the 284, the answer is to stock up whenever possible.
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  #6  
Old 09-14-2005, 05:26 PM
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I don't have reference handy, but I'm pretty sure that the .284 was never offered in the early BLR. Introduced in 1971 in only .243 and .308, even the .358 was not added until 1976. Only with the '81 came calibers such as .222, .223, .22-250, .257 Roberts and .284. I could stand correction. As stated, with the magazine limiting cartridge length and causing the deep seated bullets to occupy powder space, I have serious doubts as to your finding anywhere near a 200fps advantage for the larger case when tested over a chronograph. With that said, you still have my best wishes since anything you do with a BLR is fun. Every once in a while, I still think of building a .458 on a .300 Winny...

Last edited by Blackhawk44; 09-14-2005 at 05:37 PM.
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  #7  
Old 09-20-2005, 05:01 PM
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Currently looking for a 284 magazine for the '81 BLR. If anyone has info on an avail. mag, let me know. Thanks, Leverfan
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  #8  
Old 09-20-2005, 06:26 PM
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LeverFan, here's a couple of shots- http://shooterschoice.com/browning/brnmags.htm,
http://www.dktcoltd.com/gun_maga.htm.
I hate it when they say POR. I can't laugh, since I could stand a couple more .223 and .257 mags and my .308 is a potbelly...
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  #9  
Old 09-26-2005, 11:02 AM
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Lightbulb BLR in .458

Blackhawk44,
How much research have you done on making a BLR in 458?

I was thinking about a .338 from the 300 win. but I think I am more interested in the 458 now. I have talked to McGowen about the 338 but not a 458.
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  #10  
Old 09-26-2005, 11:17 AM
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Thumbs up Made the call.

I couldn't take it.
I called McGowen, if I supply the 300 win BLR and aprox $600.00 i can have a .458 win mag.
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  #11  
Old 09-26-2005, 11:47 AM
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Actually you have done more research than I have. I know that overall length would be fine and that with the .300 Win magazines feeding should be fine since the .300 has its shoulder pushed farther forward more than most std. length mag cases. I know there is the .450 but have never handled one and don't even know whether it is a long or short action. If it were long, it would have to be rebarrelled anyway since you would need a heavier contour (for survival) and a faster twist rate for 500gr bullets. I can only imagine that it might be best to install a buttstock with a larger buttpad area and epoxied reinforcing bolts through the wrist. Sorry I can't be of more help, but as you can see, all my research has been between my ears which is not a good place for anyone's research to reside. BOL.
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