410 BRASS in 45 Colt

[atcron]

I would like to get some longer brass for my 45/410 contender, I see that 410 brass is available and the dimensions are very close. Having said that I was wondering about the wall thickness and would it be safe if I were to make a 45 colt round out of them ?  What got me going on this is the lenggth of the free bore in this thing.  After making a chamber cast I see that it is quite long as you would expect it to be for the long 410s.
If anyone can shed some light I would appreciate it.  Ron

[spinafish]

I wouldn't use the brass .410 case for anything other than .410 shotshells...other have tried to fill the gap with a cartridge known as the .45 Mongo which is made by necking up a .444 Marlin to accept .45 bullets..be careful of that one..heard bad stories...a gentleman on this forum has developed a round using 9.3 x 74 Rimmed brass..he fireforms the brass after necking up to .45, but uses mild to moderate .45 long colt data with a filler of poly fillers to hold the powder down on the primer.  You might want to search for it, but I forgot what he named the thing..

[Redcap]

Atcron, Have you tried 45's in your barrel?   Mine does quite well with Federal factory loads. 

[atcron]

I have and have some pretty good sucess with a varity of different loads.  I just thought since there is so darn much free bore that getting the bullet closer to the lands would really tighten up the groups. Maybe I should be happy whit what it's doing now and let it go.
Thanks for your input.  Ron

[spinafish]

Mine always did the best with the heavy loads..300 grain hard cast and 300 grain XTP's..I could hit 2-liter plastic drink bottles at 45 yards with mine.