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300 grain, .338 Matchking - True BC ??

 
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  #8  
Old 01-04-2003, 10:21 PM
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Re: 300 grain, .338 Matchking - True BC ??

Crow Mag

How deep in the case is the 300 matchking in that picture?

I am going to be shooting 300 matchkings at an AOL of 3.625" and I am wondering how much case capacity they are going to eat up in my 338 lapua.
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Old 01-04-2003, 10:28 PM
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Re: 300 grain, .338 Matchking - True BC ??

Very cool!
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  #10  
Old 01-06-2003, 01:50 PM
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Re: 300 grain, .338 Matchking - True BC ??

sr90,
I've looked at that case/bullet combo enough over the last 3+ years to know the junction of the boattail and body are probably right at the junction of the shoulder/neck of the case. If I had to guess I would say in this picture it might be just a little bit below. That's how Dave Tooley throats them usually.
Remember though this is a blown out case so the neck is approx. .050" shorter (base of the old neck is now in the shoulder) than a std Lapua case like your going to use. So that will work to your advantage some but your still going to have some of that 300gr down inside the case with the 3.625" OAL limitation.

Rough calculation would be 3.875-3.625=.250" into the case assuming all else is the same. Those 300gr bullet tips vary a lot so the 3.875 measurement will vary from round to round even if your seating depth is constant.

Hope this helps,
Steve
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  #11  
Old 01-06-2003, 08:36 PM
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Re: 300 grain, .338 Matchking - True BC ??

sr90
Steve is correct the junction of the boattail and body of the bullet is seated a little deeper than the neck-shoulder junction of the case.
Crow Mag
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