.455 Eley Conversion

[MI2600]

My Colt New Service was originally chambered in .455 Eley but was rechambered to .45 LC. The .455 had a .454 bullet. I've been using .452 for the .45 LC, in another gun.

I would like to hear what others are using in this situation, and/or suggestions.

 

[rcmodel]

Figure out the chamber throat size, and that is the size lead bullet you need to use.

Bore size is irrelevant if the bullet doesn't fit the chamber throats.

Without seeing your gun?
I'd be looking for .454" bullets.

rc

 

[MI2600]

Well, a .452 falls right through!

 

[Slamfire]

I had one of those. Shoot the biggest diameter bullet you can find, I found 454 Commercial cast and they worked well. Lead bullets 0.452” in diameter leaded horribly in the barrel.

[SIZE="3"]Colt  New Service Revolver 1917 mfgr 455 Eley converted to 45LC		
			
					
255 LSWC (.454")  8.5 grs Unique  R-P cases WLP (nickle)	 
24-Sep-99	T = 78 ° F				
			 		 
Ave Vel =	875			 	
Std Dev =	38			 	
ES  =	181.5			 	 
High  =	954.7			 	 
Low  =	764.2				 
N =	32				
					
					
230 FMJ 9.0 grs Unique R-P cases WLP (nickle)		 
24-Sep-99	T = 78 ° F		 		 
					
Ave Vel =	839				
Std Dev =	86				
ES  =	360.9				 
High  =	931.9				 
Low  =	571				 
N =	12				
					
					
200 gr Winchester SilverTip Factory			 
24-Sep-99	T = 78 ° F				
			 		 
Ave Vel =	834			 	
Std Dev =	20			 	
ES  =	56.8				 
High  =	870.5			 	 
Low  =	813.7				 
N =	6			 	
	shot to point of aim @ 25 yards[/SIZE]

 

[MI2600]

RC, you were right. I bought some Hornady 255gr cast .454 bullets and they go through the chamber with just the smallest tap.