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#524502 - 09/30/18 08:05 PM .45 LC in a .410
Stan Offline
Sidelock
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Registered: 01/03/02
Posts: 8269
Loc: somwers in Jawja
Anybody here ever tried .45 LC cartridges in a .410 S x S ? If so, were the results as bad as I would assume they would be from an unrifled bore?

How about Brenneke .410 slugs?

SRH
_________________________
"Somehow, the sound of a shotgun tends to cheer one up" - Robert Ruark

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#524524 - 09/30/18 10:10 PM Re: .45 LC in a .410 [Re: Stan]
Mr. Polecat Offline
Sidelock

Registered: 04/06/18
Posts: 34
Loc: Fort Seybert, West Virginia
The .45/.410 combo barrels are specifically made over-bore to accommodate the .454 bullet that the .45 colt carries.

Any .410 that is safe to shoot .45 Colt in will be specifically marked ".45/.410".

Do not fire .45 Colt in any .410 not marked for it.

The Brenneke slugs produce more muzzle energy than standard pressure .45 Colt anyway.

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#524550 - 10/01/18 06:47 AM Re: .45 LC in a .410 [Re: Stan]
Stan Offline
Sidelock
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Registered: 01/03/02
Posts: 8269
Loc: somwers in Jawja
Never had any dealings with these type guns.

I looked at the chamber dims and where the .410 round measures .478" the .45 LC measures ..480". Are the chambers also cut slightly oversized on the .45/.410 guns to accommodate that?

Was watching a video about the Pedersoli replica of the Ithaca Auto and Burglar .45 LC/.410, with rifled bores, and just got to wondering about the combination, and how it is accommodated in the same gun.

SRH
_________________________
"Somehow, the sound of a shotgun tends to cheer one up" - Robert Ruark

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#524571 - 10/01/18 09:44 AM Re: .45 LC in a .410 [Re: Stan]
Der Ami Offline
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Registered: 07/04/12
Posts: 2876
Loc: East Alabama
Stan,
All chambers are cut larger than the maximum dimensions of the intended cartridge. Manufacturing tolerances of cartridges and chambers often result in a nominally larger cartridge entering a nominally smaller chamber.
Mike

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#524663 - 10/01/18 07:47 PM Re: .45 LC in a .410 [Re: Stan]
Mr. Polecat Offline
Sidelock

Registered: 04/06/18
Posts: 34
Loc: Fort Seybert, West Virginia
Don't forget the forcing cone. It brings the bore down to .410. And then there's the choke, which necks it down even more.....

The .45 Colt has a .454" bullet. That's a difference of 44 thous. That's twice the difference in size between a .223 and a .243, and you'd never consider trying to send a 6mm bullet down a .223 bore!!!

The .45/.410s, they have an honest-go-God rifled .454 bore (and a whole lot of freebore leading up to the rifling when you are shooting .45 Colt), and then you stick that choke on the end to stop the wad from spinning and choke it down into a decent pattern as it exits the bore. Think of it as "overboring" like people sometimes pay a lot of money for.

Honestly, with everything but the Raging Judge Magnum only being rated for standard pressure .45 Colt, and the greater muzzle energy you get from the Brenneke slugs, I think that about the only reason to own a .45/.410 is so you can have a pistol-sized .410 without it being classified as an AOW and registered with our friends at the BATFE.


Edited by Mr. Polecat (10/01/18 07:53 PM)

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#524667 - 10/01/18 07:58 PM Re: .45 LC in a .410 [Re: Stan]
Stan Offline
Sidelock
**

Registered: 01/03/02
Posts: 8269
Loc: somwers in Jawja
I was not aware that a rifled gun, chambered and recommended for .45 LC/.410, had choke. How much choke do they have? What is the difference between choking down (swaging) a slug at the forcing cone and choking it down (swaging) it at the choke, other than the pressures being much lower at the choke area of the bore?

SRH
_________________________
"Somehow, the sound of a shotgun tends to cheer one up" - Robert Ruark

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#524677 - 10/01/18 08:24 PM Re: .45 LC in a .410 [Re: Stan]
Mr. Polecat Offline
Sidelock

Registered: 04/06/18
Posts: 34
Loc: Fort Seybert, West Virginia
They have a screw-on choke, with straight rifling. The choke keeps the shot from slinging out into a donut because of the wad spinning. Then you have to take it off to shoot .45 Colt.

That's the bigger guns, anyway. The short revolvers and stuff have no choke and no wad-despinner, making them basically worthless for anything more than shooting snakes IMO (which you could do just as well with a .44 or .357 shot cartridge).

That whole deal is a solution in search of a problem, IMO, without one that will safely shoot .454 Casull or .460, because then you could have a big-game and small-game gun all in one. But .45 Colt, why???

(Edit: To be fair, I think there is a 14" T/C single-shot .45/.410 pistol with the screw-on straight choke that's safe for .45 Colt +P "TC/Ruger only" loads, but it's the only one I know of.)


Edited by Mr. Polecat (10/01/18 08:28 PM)

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#525466 - 10/09/18 08:05 AM Re: .45 LC in a .410 [Re: Stan]
Dave Weber Offline

Sidelock
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Registered: 11/09/01
Posts: 753
Loc: Bloomfield, NY
I have a contender so chambered. The accuracy with a 45 colt is poor (5-8”) @ 25yards. I suspect it’s because the bullet tilts in the long ride to the forcing cone. There was something on the web about using blown out 9.3 x 74 cases to illuminate the gap but I’ve never tried it. I typically our use of the contender for 410 only.
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#525491 - 10/09/18 10:16 AM Re: .45 LC in a .410 [Re: Dave Weber]
Der Ami Offline
Sidelock
**

Registered: 07/04/12
Posts: 2876
Loc: East Alabama
Dave,
You might try 444 Marlin cases, they work well in my 410 pistol, loaded with polishing media for carpenter bees. They might work with bullets(45cal) in the Contender. Never try this in regular 410 intended for shot. If a 444 loaded with 45 bullet won't chamber, try seating the bullet "out" with lube groove exposed and running loaded case into 444 sizing die, to bottom of bullet. This approximates heeled bullet and works well in my 43 Mauser with .452" barrel( cast bullets only).
Mike

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#526518 - 10/20/18 02:58 PM Re: .45 LC in a .410 [Re: Stan]
Stan Offline
Sidelock
**

Registered: 01/03/02
Posts: 8269
Loc: somwers in Jawja
There is a pretty good article about reloading for this combination in the current issue of The Backwoodsman magazine.

https://www.backwoodsmanmag.com

A friend gave me an issue for my birthday last week, and I found the article in it.

SRH
_________________________
"Somehow, the sound of a shotgun tends to cheer one up" - Robert Ruark

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