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hamishno1
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posted
loaded two different .243 bullets
Why does one group to the left of the other,
even when I changeback and forth from one to the other

Question:
does any one Know why this is as it has not happened to me before and your brains may be a quicker way of sorting it out

Choices:
wind?
pulling the trigger

 
 
Posts: 2 | Location: england | Registered: 28 July 2006Reply With Quote
bulldog563
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You should post this in the small bore forum.


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Posts: 2153 | Location: Southern California | Registered: 23 October 2005Reply With Quote
BigNate
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probably neither.

From your description I'd guess bedding and barrel harmonics are getting the best of you. But these things are nearly impossible to figure out for sure from a key board. Nate
 
Posts: 2376 | Location: Idaho Panhandle | Registered: 27 November 2001Reply With Quote
El Deguello
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quote:
Originally posted by hamishno1:
loaded two different .243 bullets
Why does one group to the left of the other,
even when I changeback and forth from one to the other


Neither one-it is due to barrel vibration (harmonics). This causes the muzzle to be pointed differently in relation to the target when the different bullets exit at a different point in the barrel's arc of vibration.


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Posts: 4386 | Location: New Woodstock, Madison County, Central NY | Registered: 04 January 2005Reply With Quote
Thomas Jones
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Nothing unusual about 2 bullets grouping in different places, unless you are talking 6 inches at 100 yards or some such number.
but as much as 3 inches give or take a would be expected as far as I am concerned.
I don't think youj have a problem...tj3006


freedom1st
 
Posts: 2450 | Registered: 09 June 2005Reply With Quote
bartsche
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quote:
Originally posted by El Deguello:

Neither one-it is due to barrel vibration (harmonics). This causes the muzzle to be pointed differently in relation to the target when the different bullets exit at a different point in the barrel's arc of vibration.


thumbroger thumb


Old age is a high price to pay for maturity!!! Some never pay and some pay and never reap the reward. Wisdom comes with age! Sometimes age comes alone..
 
Posts: 10226 | Location: Temple City CA | Registered: 29 April 2003Reply With Quote
hamishno1
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Thank you to every one who answered my query
As nearly everyone had the same answer it tells me I`m not the first one to have this and it adds to my slow growing ballistics knowledge.
I can pass this on to others and pretend I know what I am talking about
regards Hamish
 
Posts: 2 | Location: england | Registered: 28 July 2006Reply With Quote
vapodog
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quote:
Originally posted by hamishno1:
Thank you to every one who answered my query
As nearly everyone had the same answer it tells me I`m not the first one to have this and it adds to my slow growing ballistics knowledge.
I can pass this on to others and pretend I know what I am talking about
regards Hamish

Yup, ElDeguello and Roger don't miss many on this forum.

If you can figure out how to make all bullets print to the same POI you'll become a very wealthy man!!!!


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Posts: 28849 | Location: western Nebraska | Registered: 27 May 2003Reply With Quote
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