Double projectile question?

[3RDGEARGRNDRR]

Was wondering if anyone had attempted putting 2x90grain or less .355 projectiles (for a light 9mm or standard .380) into 357 mag case.
Or any similar idea.
The oal will probably be longer due to possibly of overpressure, was thinking of using 38 special loads at 10% drop as starting load?
What velocities did you obtain? pattern size and squib possibilities

[Swagman00]

Hmm...

Fitting more then one projectile in a cartridge is not something I would condone. It'll work for shotgun shells because those have a wad and are run through smoothbores.

When you run into rifling, forcing one bullet against another can create excess friction between both projectiles something like turning one nut against another on a threaded shank. If the powder burns faster then the bullets can move out of the barrel...lets just say you'r gun won't work well anymore if at all.

[3RDGEARGRNDRR]

ah yes, I can see that happening now thanks.
I looked up the Lee bullet sizers but they dont make on in .352-.353.
It might be possible to get some 44 mag projectiles behind a 230g 45acp bullet in a 460 SW now that I think about it.
Oh well, just a crazy thought.
Maybe I will write in to one of those youtube guys who like to try and blow off their fingers

[Carcassonne]

Was wondering if anyone had attempted putting 2x90grain or less .355 projectiles (for a light 9mm or standard .380) into 357 mag case.
Or any similar idea.
The oal will probably be longer due to possibly of overpressure, was thinking of using 38 special loads at 10% drop as starting load?
What velocities did you obtain? pattern size and squib possibilities

I tried to put two .360 buck shot balls into a 357 case. I couldn't get the first ball in the case far enough to put the other in. I put the .360 balls through a .357 sizing die first to make them a little smaller. I didn't have a bullet seater that could push the bullet past the mouth of the case.

I think some people on the castboolits forum have tried it. I don't remember if it worked.

.

[Jeff213]

I have put 2 000 buck in a 357 casing, and when fired i am pretty sure both balls were forced together in the bore because i was only abke to find one hole in the target per shot. Maybe a wad between the 2 prijectiles would work?

[bigedp51]

With Speer's plastic shotshell capsules three pieces of .30 cal buckshot will fit inside the capsule. Years ago I read this in a gun magazine and the author called it his "hock shop" load. I found it amusing when trying this that pulling the trigger six times on a .357 revolver put eighteen holes in the target.

The U.S. military also experimented with 7.62 piggyback duplex rounds during the Viet Nam War but the two bullets were too far off in their points of impact and the project was dropped. If I remember correctly it was tried in M-60 machine guns for Huey gunners. "BUT" there was too much "over spray" and danger of hitting friendly forces. And the problem was solved with 7.62 miniguns with a much higher rate of fire and standard type rounds.



As you can see below duplex rounds are even worthless in Zombie attacks.



So work on your shooting skills and accuracy and go for the head shots and firing a single round. (they are worth more points)

[Spyder]

I've got some factory .38 rounds that have two lead balls in them. I forget what brand (although I think they are Remington?), and I have no clue where I got them. I haven't shot them in years, but they seemed to work fine back then out of my 686. Two holes that were usually a hand or so apart at 10 yards.

[Spyder]

Search for "duplex rounds". Lots of articles out there, no clue how accurate any of them are or if they're safe.

[Spyder]

Here you go. There's a picture of the exact same ones I've got!

http://forums.gunbroker.com/topic.asp?TOPIC_ID=408504