You think this is doable?

[1976B.L.Johns.]

Is it possible to fire two projectiles through of my S&W 460 out of the same cartridge?
A 240 grain JHP followed by my cast 158 grain swaged round ball.



My Son who is much more knowledgeable than I said, " Yeah, maybe once, and then suggested Trailboss.
I was thinking of using Titegroup.

Any thoughts?

Do not know why I want to try this other than boredom, and for gits and shiggles.

........

 

[Milt1]

My thoughts are its doable if your powder charge is within recognized specs for the total weight of both projectiles.

 

[Mk-211]

There used to be a company that sold loaded ammo with two or three slugs loaded in the round.

Can't remember the name of the company, if I can find it, I'll post it.

ETA: https://forum.cartridgecollectors.org/t/duplex-and-triplex-pistol-cartridges/3322

 

[1976B.L.Johns.]

My thoughts are its doable if your powder charge is within recognized specs for the total weight of both projectiles.

That was my thought also.
I once did some experimenting with Titegroup pushing a 240 grain bullet in 45 Colt out of the S&W 460 that would have blown up any other revolver.

 

[.38 Special]

My reply was going to be identical to the son's.

Two pure lead round balls are/were pretty common. I've not heard of problems. I've never heard of anyone trying a jacketed bullet with a round ball. I'd be concerned with one projectile getting "bumped" ahead of another projectile during the firing sequence, and then getting whacked from behind a moment later. We know that's a good recipe for a ring in the barrel. Whether this particular combo is at risk of that is beyond me - and I'd argue that you may well be completely on your own here. If you try it (and live) please let us know. I suspect it would be unique knowledge.

 

[Random 8]

Since you're running a low velocity, might be more fun with a short WC behind the RB. I think your approach should be doable. Maybe add a backwards gas check glued to the RB to obturate and push the column. I'd tend to avoid titegroup and use a bulkier powder such as Red Dot or Unique. TG can be weird.

 

[Riomouse911]

Maybe load a wadcutter stacked behind the conical bullet? That might make a pretty impressive combo.

If you give a duplex load a try let us know how ot shoots.

Stay safe.

 

[Riomouse911]

Since you're running a low velocity, might be more fun with a short WC behind the RB. I think your approach should be doable. Maybe add a backwards gas check glued to the RB to obturate and push the column. I'd tend to avoid titegroup and use a bulkier powder such as Red Dot or Unique. TG can be weird.

Beat me to it .

Stay safe.

 

[1976B.L.Johns.]

TG can be weird.

Yup.

Maybe load a wadcutter stacked behind the conical bullet?

That sounds like a better idea.

If you give a duplex load a try let us know how it shoots.

I will, still thinking it over.

Past my bedtime and I'll catch up tomorrow with you guys. Thanks for the comments!

Hey, use care out there!

B.L.

 

[tightgroup tiger]

I loaded tri-plex loads of flattened #00 buck shot in a speer shot capsule. Three will fit in there just right. The three came to right around 150 gr so I used 150 gr load data for them. They shoot a group of about 4-5" at 7yds. and are easy to shoot.
I know I used Unique powder for them and at starting load for 150 gr.
Very fun to shoot.
I don't believe I would put a round ball behind a jacketed bullet. The ball will be contorted all out of shape and probably lead the hell out of your barrel.
I like the wad cutter behind the ball idea.
Matt's bullets make wadcutters for this exact thing in .38 cal. Here they are in .452" https://www.mattsbullets.com/index.php?main_page=product_info&cPath=71&products_id=296 You could get two of these in a case and at least they are lubed.

 

[GeoDudeFlorida]

Is it possible to fire two projectiles through of my S&W 460 out of the same cartridge?
A 240 grain JHP followed by my cast 158 grain swaged round ball.

View attachment 1099047

My Son who is much more knowledgeable than I said, " Yeah, maybe once, and then suggested Trailboss.
I was thinking of using Titegroup.

Any thoughts?

Do not know why I want to try this other than boredom, and for gits and shiggles.

........

Want me to hold your beer when you try it?

Seriously, it seems like both projectiles will exit - the same way all three balls exit a 410 triple-aught load - but I’m not so sure about how predictable the trajectory of either might be.

Having thought about that, maybe somebody else should hold the beer. I don’t want to get in the way of a speeding bullet addressed, “To Whom It May Concern…”

 

[jmorris]

I think it’s doable, we were not the first to think of duplex loads, your cases are long enough I would think about triplex loads but that wouldn’t be anything new either.

I used Matt’s little wad cutters stacked on top of one another.

https://www.mattsbullets.com/index.php?main_page=index&cPath=71&zenid=ifthv10hjhjm4i8oj8joe0nka6

I kind of cheated though as it’s easy to get load data that will work for two 75 grain wadcutters stacked on top of each other, I just used a 148gn WC starting load.

 

[243winxb]

I would not mix lead & jacketed.

Have fired 2- 110 gr Hornady out of a 30-30. Reduced IMR 4895 powder.

First bullet loaded nose first. 2nd bullet base first. Both hit target, but not close together.

Overall, just a dangerous way to waste components.

fire two projectiles

Not safe.

 

[Rule3]

My thoughts are its doable if your powder charge is within recognized specs for the total weight of both projectiles.

More to it then that. It also depends on the amount of space or volume in the case,

"Hold my beer and watch this"!

 

[AJC1]

The problem in my view is that your putting a soft lead behind a jacketed. What you are attempting has been done before with stacked swc of very light weight. In that senerio there is equal resistance throughout the train of bullets and they are sized equally. I would not develop a load with mixed materials or shapes in a rifled barrel. They do exactly what your doing in shotgun.

 

[nofendertom]

jmorris---I only see 11 holes.

 

[buck460XVR]

I'm also with your son. Trail Boss at least is safe when loaded below the projectiles, with TG, where do you find the start load with a case that large and then basically taking all of the powder capacity away. Add to it you're using a powder with a fast burn rate in a caliber intended to use slow burning powder.

Since I see no legitimate reason to do this, my suggestion is to move on and find a better way to eliminate your boredom. The .460 is intended for accuracy at distances outside the limits of most handguns. The type of duplex load you are suggesting is a far cry from that. .460 is also not the easiest caliber to safely load for. But.... Your gun, your components, your choie.

 

[jmorris]

jmorris---I only see 11 holes.

Darn perfect doubles get me every time…

 

[epags]

jmorris---I only see 11 holes.

Beat me to it

 

[Mk-211]

Darn perfect doubles get me every time…

Excellent answer!

 

[jmorris]

Excellent answer!

Even better than me covering the “flyer” with the firearm?

I was actually kind of surprised at the dispersion, as close as I was to the target. Not that I was trying to shoot a group but I was expecting something that looked closer to 6 “doubles”.

 

[Mk-211]

No, no, no, that's just Kentucky windage.

 

[bluetopper]

I'd feel a LOT more comfortable using Trail Boss, or a rifle powder so you cannot over charged it,... than Titegroup.

 

[1976B.L.Johns.]

Want me to hold your beer when you try it?

Yeah, I had to put it down to type this.
but I have been given this thought now...

I would not develop a load with mixed materials or shapes in a rifled barrel.

(As 243winxb said.) alluded to.

If I proceed with this, it will be with two SWC.

Thanks for all the answers!
THR is a good place!

Hey!
Use care out there!*

B.L.

* I think I did by asking a silly question!

 

[Bcwitt]

There was a 68 grain mould (H&G) just for that pourpose in 38s. Can load 3 of same in 357 magnum.