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More .257 Weatherby help needed.

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Old 05-15-2006, 09:09 AM
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Join Date: May 2005
Posts: 133
More .257 Weatherby help needed.

Went to the range Saturday with high hopes of my loads consisting of IMR 7828 and Barnes 100 grain TSX's showing me good things out of my Mark V.

Shot loads in half grain increments from 71 - 74 grains. Best group I got was with 74 grains, but it was over an inch. Extractor mark was starting to show as well...so I have two more suitable powders on hand to try. Which one would you try first with the above bullet?
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Old 05-15-2006, 09:18 AM
POP POP is offline
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Join Date: Jul 2001
Location: CHEYENNE, WY
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Re: More .257 Weatherby help needed.


"Weatherby was too long so I nicknamed it "Bee""
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Old 05-15-2006, 03:38 PM
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Join Date: Apr 2005
Location: Maryland
Posts: 234
Re: More .257 Weatherby help needed.

I shoot 4064 out of mine with grate results.120 NP's
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Old 05-15-2006, 09:59 PM
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Join Date: Apr 2003
Location: North Bend, Oregon
Posts: 1,211
Re: More .257 Weatherby help needed.

Which primers and what is your OAL? On this load in the 257wby I have had god luck with CCI-250 primers. What was your top velocity when you backed off?
Build a man a fire and you heat him for a day.
Set him on fire and you heat him for life.

Only accurate rifles are interesting.

Gordy and Brady.
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Old 05-15-2006, 10:15 PM
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Join Date: Feb 2006
Location: Oklahoma
Posts: 142
Re: More .257 Weatherby help needed.

I'm shooting 73.5 grains of RL22 with federal 215m primers, bought weatherby brass, 100 tsx, with an oal of 3.425", all going into a 1/2 inch hole. My gun is a mkv ultralightweight with 26" barrel.
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