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what is the best crown?

 
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  #1  
Old 05-27-2012, 01:18 PM
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what is the best crown?

my other thread was hijacked with off topic posts so lets try it again. so far my smallest groups have been with an 11 degree crown. what do you guys think is the most accurate crown shape with all other variables identical?
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Old 05-27-2012, 01:37 PM
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Re: what is the best crown?

It was probably "POOFED" due to unnecessary comments!
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Old 05-27-2012, 02:27 PM
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Re: what is the best crown?

Quote:
Originally Posted by vegas steve View Post
what do you guys think is the most accurate crown shape with all other variables identical?
First, with the bore axis turning exactly on center in a steady rest, make an 11 degree recessed face to the muzzle's edge cutting from the bore out. Then use a lapping ball about 1.5 times the groove diameter to crown the bore out at a 40 to 50 degree angle to a few thousandths past the groove diameter that's extremely uniform all the way around.

What are the "other" variables, anyway?
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Old 05-27-2012, 02:43 PM
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Re: what is the best crown?

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Originally Posted by FEENIX View Post
It was probably "POOFED" due to unnecessary comments!
it was at my request,for having too much of this exact kind of crap on it.
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Old 05-27-2012, 02:48 PM
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Re: what is the best crown?

Quote:
Originally Posted by Bart B View Post
First, with the bore axis turning exactly on center in a steady rest, make an 11 degree recessed face to the muzzle's edge cutting from the bore out. Then use a lapping ball about 1.5 times the groove diameter to crown the bore out at a 40 to 50 degree angle to a few thousandths past the groove diameter that's extremely uniform all the way around.

What are the "other" variables, anyway?
yes, this is how i finished my most recent barrel and i must say it shoots very well so far. the other variables are : scope,rings,base,loads,temp,barometric pressure,wind,bedding,shooter ability,ect.
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Old 05-27-2012, 02:53 PM
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Re: what is the best crown?

Quote:
Originally Posted by vegas steve View Post
variables are : scope,rings,base,loads,temp,barometric pressure,wind,bedding,shooter ability,ect.
I don't understand how they influence how the muzzle's crowned, faced or otherwise shaped and machined. Please explain why they're important to facing/crowing muzzles.

Last edited by Bart B; 05-27-2012 at 04:05 PM. Reason: Spelling
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  #7  
Old 05-27-2012, 03:04 PM
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Re: what is the best crown?

Quote:
Originally Posted by Bart B View Post
I don't understand how they influence how the muzzle's crowned, faces or otherwise shaped and machined. Please explain why they're important to facing/crowing muzzles.
i must have worded it wrong. i wasn't refering to the variables affecting the the crown shape itself,i was eliminating these variables for accuracy sake,making the scenario equal for all crown angles and styles.the only reason i mentioned them this time is because of my last variant of this thread kind of went south dwelling on the variables instead of the threads main topic.
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