|
|
Post by singleaction on Jan 25, 2019 17:59:45 GMT -5
I have few questions regarding the 45 cowboy special cartridge. Everything I think I know about it is from the Starline brass website:
“45 Cowboy Special (Large Pistol primer)
Cowboy 45 Special, 45 SPL, C45S
0.892 - 0.896 O.A.L.
The Cowboy .45 Special is a case that is optimized for use with light loads in .45 Colt caliber revolvers for Cowboy Action Shooting. Light loads with excessive airspace are a recipe for case splits and erratic function. By using the Cowboy .45 Special case, with its .45 Colt rim and .45 Auto length, the problem no longer exists. While many claim that .45 Auto load data can be used in this caliber, it is important to realize the limitations of the firearm it is chambered in and only use loads that fall within the pressure range of that firearm. Generally these can be loaded using .45 Colt dies and a modified (shortened) crimp die, or .45 Auto Rim roll crimp die.”
Can a Ruger Blackhawk 45acp cylinder use this cartridge by simply machining rim reliefs? I think this round might be a good candidate for putting together super clean cast bullet target rounds with solo 1000 powder. Would any changes need to be made to the leade or throats in order to use SWC’s? Thanks!
|
|
|
|
Post by bigmuddy on Jan 25, 2019 23:43:17 GMT -5
What would be the advantage to using the Cowboy Special brass in an A.C.P cylinder?
Dan
|
|
|
|
Post by singleaction on Jan 26, 2019 0:01:19 GMT -5
What would be the advantage to using the Cowboy Special brass in an A.C.P cylinder? Dan I guess that is partly what I’d like to know. It is basically cut down 45 colt brass. I like the idea of head spacing on the rim, instead of the case mouth. As long as the leade and throat are cut properly, I suspect that it might have an advantage over ACP with some cast bullet designs. However, my suspicion might be based in ignorance. Hence my initial questions. Rim reliefs for 45 autorim makes sense too. Either rimmed stumpy round would add a little more versatility to your Blackhawk, as the ACP could still be used as well. |
|
|
|
Post by tinkerpearce on Jan 26, 2019 3:10:28 GMT -5
I shoot .45 Cowboy Special in my cartridge conversion revolvers- I occasionally load some pretty stout .45 Colt loads, and it would not do to accidentally slip one into an open-top... Since I already load this round I made a purpose-built .45 CS/.45ACP cylinder for my Hawes Western Marshal. I can run Cowboy Special for plinking/target, .45 ACP if I want to run hot loads, drop in the .45 Colt cylinder if I want to run really hot loads.  |
|
|
|
Post by ddixie884 on Feb 1, 2019 3:12:02 GMT -5
I think you will find the .45acp cylinder is already head spaced for the rim of the Cowboy Special.
|
|
|
|
Post by bradshaw on Feb 1, 2019 9:49:37 GMT -5
What would be the advantage to using the Cowboy Special brass in an A.C.P cylinder? Dan I guess that is partly what I’d like to know. It is basically cut down 45 colt brass. I like the idea of head spacing on the rim, instead of the case mouth. As long as the leade and throat are cut properly, I suspect that it might have an advantage over ACP with some cast bullet designs. However, my suspicion might be based in ignorance. Hence my initial questions. Rim reliefs for 45 autorim makes sense too. Either rimmed stumpy round would add a little more versatility to your Blackhawk, as the ACP could still be used as well. ***** singleaction.... providing rim thickness clears standing breech for free cylinder rotation, AND case is trimmed short enough to freely release bullet without roll crimp cramping against the square-cut ACP transition between CHAMBER and EXIT HOLE, it should work. I do not see the point of it, as the .45 ACP is a wonderful round for a single action. David Bradshaw |
|
|
|
Post by singleaction on Feb 1, 2019 12:34:21 GMT -5
Thank you Mr. Bradshaw. I’m thinking you are right.
|
|
|
|
Post by mike454 on Feb 1, 2019 19:30:07 GMT -5
I have a ruger bisley in 45 acp that gets shot a bunch with acp bulleted taper crimped handloads. Bought some cowboy special brass so I can shoot elmers 45 auto rim bullet with a proper roll crimp in that cylinder and not have to modify the cylinder to accept auto rim brass. Not sure why others are using it.
|
|
