.452 bullets through .451 chamber throats ?

[chriske]

To check if a particular bullet is sized OK for the intended revolver, I read that you should be able to push the bullet through the chamber mouth with finger pressure & it shouldn't fall through of it's own weight alone.

Now I got hold of a batch of .452 bullets.
I can't push them through the chamber mouths of my Ruger Blackhawk.

Can those bullets be that much over-sized that shooting them in that revolver might be harmful ?
Can they be more than .001 too big ?

 

[mdi]

If it's only .001", shoot 'em. Not enough resistance in sizing with the throats to make a rise in pressure. One thousandth of an inch ain't very much, and soft metal to boot! Even .002" won't hurt, just might get some leading on the cylinder face...

 

[Trent]

It isn't a problem, I shoot .452 jacketed through 45 ACP and 45 Colt pistols all the time, no issues.

 

[mavracer]

You might not get great accuracy and it might lead a little but it shouldn't cause any problems.

 

[ljnowell]

dont be so sure that the throats on your blackhawk arent undersized. Its pretty darned common on those.

 

[blarby]

Assuming this is for 45 colt........

Anything .452 - .454 is fine.

 

[GLOOB]

Not dangerous. If it fits in the chamber, shoot it. Now, if the cylinder throat < bore, you will not have much fun with cast bullets.

 

[murf]

or accuracy with jacketed!

murf

 

[chriske]

Thanks, guys !
Indeed it was for .45 Colt (should have mentioned that)
And yes, they are pretty soft bullets, I intend to load them according to swaged-lead bulet specifications.
Thanks again, all.

 

[Walkalong]

Check the throat diameters. If they are undersized you can ream them all to .4515. But, you might find the gun shoots just fine as is. Depends on the actual size of the throats. If they are undersized you will get a lot of leading no matter what you try.

 

[glider1]

Make sure the chambers are clean and try each one. You could slug the barrel and each chamber. Don't assume anything about the bullits or the gun, on the other hand if it shoots good why worry about it. It's when it doesn't shoot good that you start looking for a reason.

 

[Slamfire]

I have shot both 0.452" and 0.454" diameter bullets in my USFA Rodeo, chamber mouths 0.452 to 0.453 and my S&W M625-9 with 0.452" chamber mouths.

I believe that the powder lot, primer, temperature of the day, cases, make more of an effect on velocity and probably pressure, than 0.002" in lead bullet diameter.

[SIZE="3"] [B]M625-9 Mountain Gun 4" Barrel [/B]	
					
					
250 LRN (.452") Valiant 8.0 grs Unique lot 6/21/1993  thrown, R-P cases, WLP primers
	25-Mar-07	T = 80 °F			
					
Ave Vel =	814	 	 	 	
Std Dev =	24	 	 		 
ES  =	72.81	 	 		
High  =	847		 		 
Low  =	774.2		 		
Number Shots	11				
	accurate				
					
250 LRN (.454") Valiant 8.5 grs Unique lot 4.3/06 5471 thrown, R-P cases, WLP primers
	25-Mar-07	T = 80 °F			
					
Ave Vel =	891	 	 	 	
Std Dev =	17	 	 		 
ES  =	61.31	 	 		
High  =	921.1		 		 
Low  =	859.8		 		
Number Shots	27				
	accurate				
					
					
250 LRN(.452")Tenn Valley Bullet 8.5  grs Unique  lot UN331 1989 , R-P cases WLP (brass) 
	 				
16-May-09	 high 83  °F				
					
Ave Vel =	908				
Std Dev =	23.3				
ES =	92.5				
High =	965.3				
Low =	872.8				
N =	29				

[B]5 1/2" USFA Rodeo [/B]			
					
250 LRN (.452") 8.5 grs Unique  thrown, R-P cases, CCI300 primers	
12-May-02	T = 80°F				
					
Ave Vel =	855	 	 	 	
Std Dev =	16	 	 		
ES  =	59.91	 	 		
High  =	885.4		 		
Low  =	825.5		 		
Number Shots	12				
		
					
255 LSWC (.454") 8.5 grs Unique  thrown, R-P cases, WLP primers	
12-May-02	T = 84°F				
					
Ave Vel =	844	 	 	 	
Std Dev =	33	 	 		
ES  =	117.8	 	 		
High  =	907.6		 		
Low  =	789.8		 		
Number Shots	12				
					
240 JHP Sierra (.4515") 8.5 grs Unique  thrown, R-P cases, CCI300 primers
12-May-02	T = 84°F				
					
Ave Vel =	848	 	 	 	
Std Dev =	54	 	 		
ES  =	146.4	 	 		
High  =	911.8		 		
Low  =	765.3		 		
Number Shots	6[/SIZE]