looking for info on dimensions


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ieszu
January 31, 2008, 07:07 PM
I am just wondering if someone could point me to a website that has case dimension for cartridges.... trying to see if I can modify an M1 carbine to another caliber, and am trying to figure out if I need to machine a new bolt or if the current one can be used.

For what it is worth, trying to see if I can modify it to shoot the 5.7 FN round... only doing on CAD now, so I don't just ruin a good gun....

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BSlacker
January 31, 2008, 07:24 PM
Try this for 5.7X28mm. Post #20 has accurate metric measurement of the case. The inch drawings should be taken with a bunch of salt.
http://fivesevenforum.net/showthread.php?t=14865&page=2
The carbine should be all over the web.:)

ieszu
February 1, 2008, 12:48 AM
thanks got the info I needed.... going to see if I can get a prototype working on AutoCad.... if that proves well... it should be fun to build :)

cpttango30
February 1, 2008, 08:55 AM
Here is one of the best lists of current cartridge drawing with deminsions.

http://stevespages.com/page8d.htm

rcmodel
February 1, 2008, 11:45 AM
There is always the 5.7 Johnson Spitfire.
Better ballistics then the 5.7x28mm.

http://www.reloadbench.com/cartridges/wmmj57mm.html

http://www.ammo-one.com/5-7JohnsonSpitfire.html

http://i81.photobucket.com/albums/j219/rcmodel/KTOG/1224.gif
rcmodel

Walkalong
February 1, 2008, 01:41 PM
aghhh. Note to self. Read more carefully next time

peterotte
February 2, 2008, 04:18 PM
The 5.7 Johnson Spitfire was designed for the 30 carbine - using the same case of course. I can't figure out why that cartridge is so low on the popularity stakes. It is slightly more powerful than the k-hornet, the same size as the hornet for all intents and purposes, a stronger case than the hornet and plenty of brass to form cases from. Not that I have a problem with the hornet - my favourite cartridge!

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