Thread: Early hour ponderings

The 410 shotgun was created using left over 303 British cases,straight walked to poke in cordite then sized down for 303. The 410 is just a 303 brit with straight walls..with me so far??? So what size lead ball would slot into said straight walked case?45 or 45?? Has it been done??? The 303 is a bit much for bailed pig and 410 a bit lacking.... Thinking inbetween case full of bp with powder coated ball.......

Interesting thought. If it’s in fact 45, how far from a 45/70 would it be? Or am I way off on that?

It's actually almost a dead ringer for the 444 marlin case straight out of the blocks. I recall wingman making brass cases for it.

Greetings @Micky Duck and all,
This has been done already in the 375 Flanged Nitro Express 21/2" from the late 1800's. The .303 case is smaller in the base than either of the 45-70 or the 444 Marlin so even with a reasonably straight case a .43" dia ball would be absolute max and .41" a more practical max. Even then the case would need to be blown out from its normal .401" shoulder. Just necking up would leave you at .375 ball dia. A bit less than you were hoping for Micky?
Regards Grandpamac.

Originally Posted by Micky Duck

The 410 shotgun was created using left over 303 British cases,straight walked to poke in cordite then sized down for 303. The 410 is just a 303 brit with straight walls..with me so far??? So what size lead ball would slot into said straight walked case?45 or 45?? Has it been done??? The 303 is a bit much for bailed pig and 410 a bit lacking.... Thinking inbetween case full of bp with powder coated ball.......

Dont you go to bed,lols.

Originally Posted by Trout

Dont you go to bed,lols.

He can sleep when he's dead

Google up Taurus Judge pistol. These are 410 / 45 Colt, there might be some info based around these.

Don't know if this will work but it seems this has come up before, on this forum even

https://www.nzhuntingandshooting.co....hotguns-45501/

Without knowing the exact numbers I think you should keep max chamber pressures on your radar.

Originally Posted by STC

Without knowing the exact numbers I think you should keep max chamber pressures on your radar.

that is a good point. Would need to slowly work up the loads

Originally Posted by Trout

Dont you go to bed,lols.

the "white gold" doesnt pick itself up mate

Originally Posted by Rated M for Magnum

Don't know if this will work but it seems this has come up before, on this forum even

https://www.nzhuntingandshooting.co....hotguns-45501/

yes....my thoughts have often wandered in this direction..... still searching for perfect answer LOL.

Originally Posted by Russian 22.

that is a good point. Would need to slowly work up the loads

SO HOW my crazy mind went in this direction.....
the 277fury gets higher pressures SAFELY by a better case/stronger case design.... surely a brass case is stronger than plastic jobbie
the .410 solids are tiny and light...around 87grains...poked out at 1500ish fps
the other day on thread about stags with black powder it was mentioned a .45 ball is 180ish grains
buckshot is .30 or .32 calibre the plastic case easily and safely pushes out 3-5 of them 1200ish fps,in plastic wad.
a brass case that fits nicely inside a .410 chamber with round ball,maybe powder coated pushed down on top of load of black powder shouldnt create huge pressures,should be brown bess accurate in smooth bore say 4" at 25 yards as the goal..and might provide enough power without too much.....

WHY WOULD YOU???allowing a fella to carry the uber light rugged wee .410 shotgun but have a cartirdge on hand that will deal to animal at close range with a bit more authority than either the solids or buckshot..without the spread of buckshot

the mad scientist has returned from the lab
Egor my trusty assistant is now on half pay as ran out screaming halfway through proceedings.
learnings from the experiments
#1 jamming hand between die and hard surface hurts and causes blood blistering
#2 MRC .410 whackamole DOESNT resize the last 3/4" of a shell..bugger as that was my hope.
#3 the otherwise usless 3" long .410/12ga adaptors may have a use in resizing brass .410 shells (see darling the money wasnt wasted)
#4 a 45/70 case fails as cant quite get last 1/4" nearest rim to shrink inwards
#5 there IS a common enough size fishing sinker weighing 140ish grains that will resize to a nearly perfectly round .458 pill
#6 sometimes these things just need to stew away on back burner till all the bits fall into place
#7 half a dozen .444marlin cases would be really handy about now
#8 a very downloaded 444 case with usual .44 calibre projectile over load of black powder or using smokeless down load or trailboss may well be a hell of a lot easier and safer at end of day....

Originally Posted by Micky Duck

The 410 shotgun was created using left over 303 British cases,straight walked to poke in cordite then sized down for 303. The 410 is just a 303 brit with straight walls..with me so far??? So what size lead ball would slot into said straight walked case?45 or 45?? Has it been done??? The 303 is a bit much for bailed pig and 410 a bit lacking.... Thinking inbetween case full of bp with powder coated ball.......

Micky, why 410?

Why not a simple "light load". Im sure you know AR2206 can be loaded as low as 60% of max listed load.
Other powders such as AR2208 75% of max listed load.
Combined with a light to medium weight bullet for the calibre should do the job.