.50BMG necked down to .338?

Isn't there a .50 BMG necked down to .17? Mind you, it's probably done just for laughs, but I don't want to completely ruled out that someone, somewhere, has fired it out a barrel.

Here it is:
1750bmg.jpg
 
The 338/408CT burns a barrel in 500 rounds or less.....Soooo.....

The 50 BMG version would be fun...Just not for very long. :D
 
I think it's been done... the .338-50 has gotta be a savage barrel-burner though.

The original user of a .17-50 BMG was able to fire a bullet SO fast that it actually went forward in time - hitting him from behind as he walked downrange to check his target. Sadly, being that the impact occurred at relativistic speeds, he did not survive the impact, and the entire rifle range was consumed by a quantum singularity soon afterwards.

:D

-M
 
Doc M said:
I think it's been done... the .338-50 has gotta be a savage barrel-burner though.
The original user of a .17-50 BMG was able to fire a bullet SO fast that it actually went forward in time - hitting him from behind as he walked downrange to check his target. Sadly, being that the impact occurred at relativistic speeds, he did not survive the impact, and the entire rifle range was consumed by a quantum singularity soon afterwards.

:D

-M
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In an opposite, but similarly dangerous vein...

Dwight Scott once told me that my loads were a danger to the target crew at the Super Shoot. When I told him how much powder I was shooting he said, "Norm, by the time your bullets get to the target line the target crew would be changing targets for the next relay" :eek:
 
rishu_pepper said:
So can I shoot the 17-50BMG in F-Open? :D
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ONCE :D

Max, similar monsters have been tried like the 6.5STW. super hard on bullets and barrels but you get some pretty nice speed. If you can find the info, Lazzeroni made a family of these 338lm necked down monsters and varying degrees of success. Maybe he used the Gibbs as the parent?

You might also be able to find info on a 6.5 RUM.

the 338LM necked to 30cal is pretty much the same as a 300RUM. The 30-378 Wby is larger. Lots of info on these.

There are also wildcats based off the full size 416Rigby case which is what the LM came from. then the same thing with the 505 Gibbs case which the 408CT is a related to.

There really isn't any case that hasn't been wildcatted in every way shape and form. If you do the snooping, I am sure you will find info on your dream wildcat.

Good luck.

Jerry
 
Some things just have to be tried so you can you did, but sadly, it would likely be baked before you could find the optimal powder.

I did see the opposite being built quite recently - a 50 hush with a 50 cal bullet on top of a cut-down and lathed 338LM case.

I believe its owner was none other than our own Ed Begg... It rather reminded me on a knee mortar.
 
Did some "research" (by which I mean google) on the 17-50BMG. Key parts have been bolded.

With today's modern trend of shorter, fatter, and faster rounds, our staff has developed what may be the ultimate varmint round. It will far exceed both the WSM and WSSM rounds in both range and velocity. We would like to introduce the .17/50BMG Magnum. (see photo attached below)

The new round is based on the 50 BMG necked down to .17 cal. with an innovative shoulder configuration to allow additional powder space. Unfortunately, the round will not be able to be reloaded to factory velocities until we can develop a home-use powder drop that will adequately fill the shoulder space. It has been suggested that the load be assembled in reverse, with the bullet first being seated and the powder then poured throught the primer hole. We are now testing that procedure.

The .17 cal. projectile is a specially designed 45 gr. varmint bullet. The staff sacrificed a slight bit of velocity with this heavier bullet in order to get an increased ballistic coeficient for added downrange stability.

We started development with 200 gr. of Hodgden H50BMG powder but found it to be a bit slow burning for maximum velocity with this light bullet. 205 grains of IMR4831 seems to produce the highest velocity but we won't know for sure until we find a chronograph that registers above 9999 fps.

Close range accuracy with our prototype rifle was .3 MOA. Further refinement of the rifle should dramatically improve on this poor performance. We fired a group at maximum range yesterday then sent a team to recover the target. They should be back tomorrow to report on long range accuracy.

Finding a scope with enough magnification to see small targets at maximum range has been a challenge. We finally settled on a Swift atronomical reflecting telescope which will provide suitable magnification of ground squirrels at 3 miles. However, being a reflecting scope, it has it's drawbacks. The image is inverted and, with the eyepiece being near the front and at 90 degrees to the scope, it's a bit uncomfortable to hold and sight the rifle. We feel that the unnatural shooting position is the cause of the less-than-ideal accuracy with the prototype rifle. On the plus side, the exceptional velocity of the round allows a 1.5 mile sight-in and allows the shooter to hold dead-on at twice that range.

It's well known that large capacity, narrow bore rounds tend to heat a barrel rapidly, causing premature throat errosion. This round, being large capacity and narrow bore to the extreme, tends to heat the barrel very rapidly, as expected. With the prototype, we find it unadvisable to fire more than two rounds per day in the winter, one per day in hot weather. This gives the barrel time to cool between shots. We have a second generation prototype under development that uses an environmentally correct R134 cooling system that operates from a backpack unit. It is designed to permit sustained rapid fire of one shot per hour.

We tested the new round on a coyote at about 2/3 of it's maximum range. The coyote was feeding on a rabbit when the shot was fired. However, before the bullet arrived, the coyote finished eating and wandered away, causing a miss. We recommend shooting only at sleeping coyotes unless it's either caught in a trap or already dead.

Retail price has not been established. Duplicate prototype rifles are available for those who wish to get in on the ground floor of the hottest round ever developed. We will gladly take trade-ins if you happen to have a low mileage Porche, 1998 or later. First born children are not accepted unless house broken and vaccinations are current.
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curtmg said:
People with machinery, have had too much time on their hands, long before computers. A guy who is good on the lathe could make one of those pretty easily, probably in less time than it'd take to make the photoshop look right.
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I suppose your right :)
 
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