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.452 bullets through .451 chamber throats ?

Discussion in 'Handloading and Reloading' started by chriske, Mar 13, 2013.

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  1. chriske

    chriske Member

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    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 ?
     
  2. mdi

    mdi Member

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    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...
     
  3. Trent

    Trent Resident Wiseguy

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

    mavracer Member

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

    ljnowell Member

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

    blarby Member

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

    Anything .452 - .454 is fine.
     
  7. GLOOB

    GLOOB Member

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    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.
     
  8. murf

    murf Member

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    or accuracy with jacketed!

    murf
     
  9. chriske

    chriske Member

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    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.
     
  10. Walkalong

    Walkalong Moderator

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    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.
     
  11. glider1

    glider1 Member

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    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.
     
  12. Slamfire

    Slamfire Member

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    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.

    Code:
    
    [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]				
    					
    
    
     
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