Can this cylinder be converted to anything else? I would like it in a 40 SW but the cartridge dimensions do not look even close. I guess what I am asking is if I get a 38-40 with a 10mm cylinder can the 38-40 be used for anything else with this barrel and frame? Ok you smart guys help a dummie. Ican shoot them I just can not make them or work on them and I am to old now to worry about it. Thanks for all the help on my dumb questions.

No that the cylinder can be converted to 40S&W...the rimmed case diameter is too large at 0.467" and 40S&W  is 0.424"  SORRY!

It can be done.  I have a project in progress now that will do just that.  However, if all you want is to shoot .40SW in a 10MM Auto cylinder, you can do that, too.  I do it.

Quote from: DM1906 on April 27 2013 10:57:23 AM MDT
It can be done.  I have a project in progress now that will do just that.  However, if all you want is to shoot .40SW in a 10MM Auto cylinder, you can do that, too.  I do it.

Well instead of putting in two cents, try 5 cents, and explaining how you go about turning the 38-40 cylinders into the 40S&W, cut and fitted sleeves?  Complicated?  From a cost standpoint? 

I already know about long loading the 40S&W cases to 10mm + bullet seating to hold a headspace, however I don't consider it to be a 40S&W cartridge any more! Or 10mm either...My reason for that is it must fit the original specs of the cartridge to be considered the same.

There might be some potential for 400Corbon from the 38-40 cylinder............

I thoughtthe case was the problem child in this.I can call it the RRMjustblewup 40.

A better option would be to acquire the Ruger Blackhawk in 38-40.  The acquire a cylinder that fits the window frame dimensions in 357 mag.  SHould be easy since every blackhawk frame since forever was offered in 357.

Have the 357 cylinder line bored and chambered to 40 S&W or 10mm as you fancy wishes.  And, bingo, you have a home-made Ruger Buckeye 38-40/10mm.

Quote from: RRMan03 on April 27 2013 03:30:13 PM MDT
I thoughtthe case was the problem child in this.I can call it the RRMjustblewup 40.

In the revolver we are talking the fullest case support as compared to having lack of support at a feed ramp where as much as 1/8" and in some instances 5/32" can be left unsupported at the feed ramps and around as in the case of the DE's of some barrels.  The cylinder strength is what keeps the casing from expanding to contain the gases as opposed to a blow out ahead of the case head...  this is not to say the the head can't crack and split radially for partial or full separations.

best of luck in what ever you decide...

Quote from: The_Shadow on April 27 2013 12:04:41 PM MDT

Quote from: DM1906 on April 27 2013 10:57:23 AM MDT
It can be done.  I have a project in progress now that will do just that.  However, if all you want is to shoot .40SW in a 10MM Auto cylinder, you can do that, too.  I do it.

Well instead of putting in two cents, try 5 cents, and explaining how you go about turning the 38-40 cylinders into the 40S&W, cut and fitted sleeves?  Complicated?  From a cost standpoint? 

I already know about long loading the 40S&W cases to 10mm + bullet seating to hold a headspace, however I don't consider it to be a 40S&W cartridge any more! Or 10mm either...My reason for that is it must fit the original specs of the cartridge to be considered the same.

There might be some potential for 400Corbon from the 38-40 cylinder............

No, not "long loading".  I'll talk offline with you, but there may be a patent involved (spans several cartridge possibilities), but not online.  PM me.  Actually, I'd appreciate your input.

The 400 Corbon sounds intriquing.  I'll have to look into that!  The .38-40 chamber isn't far off, but I wouldn't start with that (too long).  Cost is always a consideration.  If I can't get it done on a working man's wage, I don't mess with it.

Quote from: DM1906 on April 27 2013 10:57:23 AM MDT
It can be done.  I have a project in progress now that will do just that.  However, if all you want is to shoot .40SW in a 10MM Auto cylinder, you can do that, too.  I do it.

Huh? I thought a 40 S&W cartridge would seat way too deep for the firing pin to reach it. Unless this uses moon clips.

Quote from: gandog56 on May 02 2013 07:13:47 PM MDT

Quote from: DM1906 on April 27 2013 10:57:23 AM MDT
It can be done.  I have a project in progress now that will do just that.  However, if all you want is to shoot .40SW in a 10MM Auto cylinder, you can do that, too.  I do it.

Huh? I thought a 40 S&W cartridge would seat way too deep for the firing pin to reach it. Unless this uses moon clips.

This is a S/A revolver, so no practical way to use moon clips.  There's another way.  I'm still in the middle of a patent search, so I can't go public just yet.  Once I do, you'll see it here first, or read about the one who beat me to it.

Have you seen that 38-40 Buckeye for sale. Its either on Gunbroker,Guns American. I cannot remember.One of the cylinders looks like it has laid in a field after a battle for 50 years. I think its the 10mm. The gun is still at 850.00 reserver met so it must be Gunbroker with 3-4 days left.It looks awful. A NIB one just sold for 1200.00 Seems you do not see many of the 32-20's/32 HR Mag..Or the 44-40's/44 Mag.Those conversions have to be a blast to shoot. You could get 3-5 guns and have 10.Counting the 22lr/22mag and the 45LC/45ACP