Wildcatting the 45 Colt /410 contender possibility - Graybeard Outdoors
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post #1 of 12 (permalink) Old 02-26-2020, 03:41 PM Thread Starter
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Default Wildcatting the 45 Colt /410 contender possibility

Questions/Concerns about TC Contender 45Colt/410 barrel and “wildcatting” the cartridge without modifying the Barrel/chamber.
I recently discovered the availability of Brass .410 Cases. They are 2.36” in length and are sized to fit in a 410 chamber and the primer pockets are Large Pistol in size. I am contemplating using the 410 case as a Metallic case cartridge rather than shot shell to replicate a 45 Colt Contender based cartridge velocities that puts the JHP bullet closer to the lands instead of jumping over an inch as is the current situation with the 45 Colt case. I’m guessing that I would need to use a wad of sorts to keep the powder in tight proximity to the flash hole.
I’m wondering if this has ever been done? Keep in mind, I’m not trying to invent a junior .45-70, I’m just trying to shorten the distance between the bullet and the lands while maintaining 45 Colt +p type loads. I’m targeting 1500fps with 200-250gr Jacketed bullets.
Any thoughts or concerns about this theory. Or has this been tried before?

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post #2 of 12 (permalink) Old 02-26-2020, 04:04 PM
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I'd check 410 brass dimensions to see in it's feasible to use .451"-.452" bullets. Then developing a load would be the next hurdle (I'm not sure using a filler/wad would improve powder combustion). And is "chasing the lands" the only desire for using bullets in a brass shot shell?

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post #3 of 12 (permalink) Old 02-26-2020, 05:48 PM Thread Starter
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Originally Posted by mdi View Post
I'd check 410 brass dimensions to see in it's feasible to use .451"-.452" bullets. Then developing a load would be the next hurdle (I'm not sure using a filler/wad would improve powder combustion). And is "chasing the lands" the only desire for using bullets in a brass shot shell?
Yes, shorting the bullet jump while maintaining 45 colt +p / contender velocities and pressure.
I actually got some advice to look into the 45 Mongo discussion and discovered the 444 marlin case fire-formed in the 45 colt deep throat chamber will also accomplish what I'm asking about. It involves some steps in the brass work up, but I'm in the mood to try.
Thanks for the comments.

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post #4 of 12 (permalink) Old 02-26-2020, 06:23 PM
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Here's a few threads you may like.

410 magtech hulls:

https://www.go2gbo.com/forums/56-han...load-data.html

444 marlin and 11.5x74r:

https://www.go2gbo.com/forums/108-h-...-report-2.html

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post #5 of 12 (permalink) Old 02-26-2020, 06:54 PM Thread Starter
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Here's a few threads you may like.

410 magtech hulls:

https://www.go2gbo.com/forums/56-han...load-data.html

444 marlin and 11.5x74r:

https://www.go2gbo.com/forums/108-h-...-report-2.html
Awesome!
Thank you!

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post #6 of 12 (permalink) Old 02-27-2020, 08:05 AM Thread Starter
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Quote:
Originally Posted by Lt. Dave View Post
Here's a few threads you may like.

410 magtech hulls:

https://www.go2gbo.com/forums/56-han...load-data.html

444 marlin and 11.5x74r:

https://www.go2gbo.com/forums/108-h-...-report-2.html
Did you ever try any other powder, or did you stick with Trail Boss?

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post #7 of 12 (permalink) Old 02-27-2020, 08:59 AM
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Originally Posted by mag41vance View Post
Did you ever try any other powder, or did you stick with Trail Boss?
I have. Not sure how safe those would be in a contender though. I am using an H&R with an SB2 receiver. Probably a stronger action than the contender. Tried multiple powders from Hodgdon's website that showed lower pressure loads for similar sized cartridges using 45 cal bullets. Used these with the .444 brass only. Looked at the starting loads to see which powders produce less than 30k psi. The pressures should be lower in a larger .444 case blown out to 45 cal. dimensions. But you are on your own. With Trailboss you know your safe as long as you don't compress the powder. And it works well.

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post #8 of 12 (permalink) Old 02-27-2020, 09:32 AM Thread Starter
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Originally Posted by Lt. Dave View Post
I have. Not sure how safe those would be in a contender though. I am using an H&R with an SB2 receiver. Probably a stronger action than the contender. Tried multiple powders from Hodgdon's website that showed lower pressure loads for similar sized cartridges using 45 cal bullets. Used these with the .444 brass only. Looked at the starting loads to see which powders produce less than 30k psi. The pressures should be lower in a larger .444 case blown out to 45 cal. dimensions. But you are on your own. With Trailboss you know your safe as long as you don't compress the powder. And it works well.
Very good. Thank you
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post #9 of 12 (permalink) Old 03-05-2020, 09:38 PM
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I've heard of a couple of guys using S&W 460 brass and cast bullets with Trail Boss. I don't know what they were getting for velocities. I know I would not have any full house 460 rounds laying around the house. I make to many mistakes.
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post #10 of 12 (permalink) Old 03-06-2020, 05:08 AM Thread Starter
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Originally Posted by oldnglad View Post
I've heard of a couple of guys using S&W 460 brass and cast bullets with Trail Boss. I don't know what they were getting for velocities. I know I would not have any full house 460 rounds laying around the house. I make to many mistakes.
Thank you for that information.
I have tried a few of the .444 Rem brass. Nothing at this point to report.

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