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338-378 starting loads

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Old 12-30-2002, 11:47 AM
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338-378 starting loads

looking for some pointers from the big boys. this is my first BIG rifle. it's built on a win pre 64 70 action with a 29" stainless fluted barrel any help, recommendations, or pointers appreciated. Steve.
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Old 12-30-2002, 04:30 PM
Platinum Member
Join Date: May 2001
Location: Lock Haven P.A.
Posts: 1,071
Re: 338-378 starting loads

What bullet
Boyd Heaton...
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Old 12-31-2002, 09:22 AM
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Re: 338-378 starting loads

i'd start with a 225 gr. Barnes X.
But I'm open to suggestions.
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Old 12-31-2002, 09:45 AM
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Re: 338-378 starting loads

300 grain matchking?
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Old 12-31-2002, 02:53 PM
Platinum Member
Join Date: Jun 2001
Location: Palmer, Alaska
Posts: 2,539
Re: 338-378 starting loads

The SMKs are hard to beat for accuracy.
If you seat the 300gr SMK long at 4.100" like my brother does, his throat permits it, his max load is 118gr H870 and groups well. Start low and work up. He's getting 3000 fps out of a 32" tube with the 300.

The X bullet is a good bullet to, some of the flatbases seem to shoot better than the boattails though.
Brent Moffitt
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Old 01-01-2003, 12:01 AM
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Re: 338-378 starting loads

How far will you be shooting and at what game?
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Old 03-17-2003, 09:18 PM
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Join Date: Mar 2003
Location: Delta Junction Ak
Posts: 99
Re: 338-378 starting loads

I need data for 300 gr boat tails used out of a Weatherby accumark .I am using reloader 25 powder .I have shot .25 groups with this rifle using Nosler partitions and 110 grs of reloader 25.I also have a large quanity of Norma MPR powder I took out of weatherby 416 Norma loads I need any data for 338-378 with 250 gr and 300 gr.I have two of these rifles just breaking other one in now.How does 300 gr serria bt work on game ?
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