autogun

Military Guns and Ammunition

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This is intended for people interested in the subject of military guns and their ammunition, with emphasis on automatic weapons.

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Indian 5.56x30 mm Carbine news   Small Arms <20mm

Started 11-Dec by autogun; 935 views.
graylion

From: graylion

25-Dec

I wonder how high the pressure of the 5.56x30 MARS was, given that it apparently was high enough to cause problems.

smg762

From: smg762

26-Dec

The MARS had problems with bulging or ruptured cases.  Energy was similar to 556 in 10' barrels. 

556insas performance is about halfway between the MARS,  and smaller 5.7x28. 

In reply toRe: msg 8
graylion

From: graylion

26-Dec

smg762 said:

The MARS had problems with bulging or ruptured cases.  Energy was similar to 556 in 10' barrels. 

I am aware. I am assuming that can be fixed with stronger cases. Or otherwise go to .221 Fireball.

smg762

From: smg762

26-Dec

As far as I can see fireball is identical to MARS other than an extra 3mm OAL. 

KAC also used the fireball for their 6MM PDW

graylion

From: graylion

26-Dec

smg762 said:

As far as I can see fireball is identical to MARS other than an extra 3mm OAL.  KAC also used the fireball for their 6MM PDW

My problem with .221 is the length of the ogive.

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