Could a 50 BMG case blown out to have straight walls and a sharp shoulder, as most 50's as single shot it wouldnt matter much, could or would this be feasible?
Rock
Posts: 121 | Location: Elmira, NY, USA | Registered: 20 February 2002
It's been done and you can get another 150 fps out of it. Of course you'll be paying $250 for a set of dies and $300 for a reamer. However, it's legal I believe only in FCSA heavy gun and unlimited class competion. I believe the rules specify a .50BMG case for light gun. They check!.-Rob
Posts: 6314 | Location: Las Vegas,NV | Registered: 10 January 2001
How about blowing it out with strait walls and a sharp sholder, but reduce case lenth so that the power capacity is the same or slightly smaller. Similar to a 7.62x51mm scalled up, instead of the 30-06.
quote:Originally posted by Axel: KBGguns, a 308 Win does NOT have anywhere near the case capacity of a 30-06!
Axel
not what the man saide...
him say "imp 50 would LOOK LIKE scaled up 308" implying that the collective INTELLIGENCES would know that JM Browning used the 30-60 to scale up to the 50 BROWNING MG
I knew a guy who competed at a 1000yd match hosted by the FCSA that was using a 50 improved chambered rifle. Took almost 70 grains more powder than a standard 50 BMG to gain less than 200 fps. Also had to be concerned with washing out the barrel prematurely. Not really a good trade off. Just my opinion.
Posts: 239 | Location: North Smithfield, RI USA | Registered: 09 March 2002
EDM Arms made a short run of 20mm/.50 actions about four years ago. Called them "Warlocks". Completed rifles looked to weigh in the 85 pound range but could have been more. Said to run an 850 gn projo at 4800 ft.sec. Got a pic somewhere; find it and I'll post it.
Posts: 257 | Location: Radio Free Texas | Registered: 20 September 2001
Arock-This one here would get a 750 gr out at over 5000.They tested armour with it about 40 years ago.Get a cartridge picture of the one EDM did if you can, as I am curious to see if they used the double radius shoulder like one in my pic.Ed.
quote:Originally posted by KBGuns: How about blowing it out with strait walls and a sharp sholder, but reduce case lenth so that the power capacity is the same or slightly smaller. Similar to a 7.62x51mm scalled up, instead of the 30-06.
.508 Whinchester?
Kristofer
Congratulations! You have just re-invented the Vickers 12.7x80SR or the .50in Vickers, a round that predates WWII! Another "Common" 50 round is the is 12.7x108mm Soviet that has also been with us since before WWII, common in the Soviet block DShK M1938 HMG. Just for comparison/illustration, the 50 BMG is 12.7x99mm in metric expression. Now if you can just find a source of brass for all these you can have a 50 cal (or 12.7mm, if you prefer!) in three different case lengths. WOW! Best regards,
Trapper-Do you have a pic of the 12.7 x 108 mm long soviet round.Apicture of it next to 50 BMG would be nice.And the base dimensions.I need to know the base diameter.
Trapper-Thanks for pictures and site info.I got a bunch more pictures for info from site also.There is a lot of interesting stuff there.Like you say most things have been done before.Ed.
More info: This from one Tom Fort: Hi there, I measured a few specimens from my collection and averaged the base diameter at .855. Hope that helps. Tom Regards,
What about ressurection of 7.92x107 in some single shot rifle ? (I mean you like long cases ), or it could be chanded to .338x107 or so, maybe .458x107 could be nice
Jeri--500 gr--Can you imagine what Rob and I would do if we had a few barrels of those cases pictured on that site.Some have really interesting possibilities.Ed.
DagoRed--If I would have had some of that 107 mm long brass, I might have made my wildcat 458 4.2 inches long,.With a straight design and belt of course.Would be something for an experiment sometime.Ed.
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), or it could be chanded to .338x107 or so, maybe .458x107 could be nice ![[Big Grin]](images/icons/grin.gif){kind=icon}
