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Best Brass for 30-378?

 
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  #15  
Old 08-20-2013, 09:47 AM
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Re: Best Brass for 30-378?

How many "yards" more efficient?

It seems to me that this cartridge is just begging for a heavy, high BC, accurate, bore riding bullet to really make it shine.

Perhaps 250-260 grains.

Last edited by LONGSHOOTER; 08-20-2013 at 12:30 PM. Reason: adding some thought
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  #16  
Old 08-20-2013, 04:40 PM
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Re: Best Brass for 30-378?

Broz,

The reamer they will use on my gun is from Pacific Tool & Guage: 30-378 Weatherby Magnum Live Pilot Finisher [283641] - $147.00 : Pacific Tool & Gauge, Inc. - Store Home, Redefining Quality in Manufacturing


They said it was going to be a freebore with a little room to play with seating lengths.

The rep at GAPrecision reccommended the comment below. This because the bullet might be to long for the Accuracy International CIP magazine but from what I understand the loads for this caliber seem to be more accurate with a shalower seating depth, what is your OAL when you load the 230's for your 30-378?

This is what the rep said:
"Consider loading to 3.745 max OAL, that will give a little space for variance in bullet meplats and ogives".

Thanks
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  #17  
Old 08-20-2013, 04:47 PM
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Re: Best Brass for 30-378?

Quote:
Originally Posted by LONGSHOOTER View Post
Perhaps 250-260 grains.
Who makes those in 30 cal?
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  #18  
Old 08-20-2013, 04:52 PM
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Re: Best Brass for 30-378?

Start with 90 gr of H-1000 and work up. Watch for accuracy and pressure. Look for an accuracy node around 94 gr if the rifles, freebore, and powder lot allows you to get there.

Seat them at 3.790" to start OAL case head to tip of bullet.

That is as close as I can get you with out the rifle or knowing the mag box dimensions.

Jeff
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  #19  
Old 08-20-2013, 05:40 PM
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Re: Best Brass for 30-378?

Awesome, thanks for the help Jeff! When start playing with the load after I get my gun I might have some more questions for you.
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  #20  
Old 08-21-2013, 09:27 AM
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Re: Best Brass for 30-378?

Broz,

Who made the 230 Bergers, before Berger started making them?

Think!

I was saying we needed a 227 grain high BC 30 before Berger made the 230s.

I am saying we can go the extra step for the 30-378 also. The 30-378 should be using heavier bullets than the 300 WM.
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  #21  
Old 08-21-2013, 04:00 PM
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Re: Best Brass for 30-378?

Nosler makes 30-378 wby mag also.
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