A couple years back, the 45 Cowboy Special was banned. I think we need to look a little bit closer. As I measure the 45 Cowboy Special vs .455, I think it could be used in the ..455.
Case dimensions;
Bertram Brass .455
length .871 diameter tapered .468-.475, rim diameter .520
45 Cowboy special
length .889, diameter .471, rim diameter .505.
I am looking for a couple of volunteers to see if the 45 Cowboy Special will work in a 455 Elly/455 Webley. I will send the volunteers 10 rounds of 45 Cowboy special Brass to try, bonus to the first to respond, 19 rounds of Bertram .455 brass. If i is usable in a .455, I want to have 1 to submit to NCOWS side by side for comparison, if it doesn't work, it is a non issue.
Brian