257 Weatherby? - The HuntingPA.com Outdoor Community
 
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post #1 of 7 (permalink) Old 02-08-2011, 11:58 PM Thread Starter
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257 Weatherby?

Anyone reloading the 257 Weatherby?

A buddy of mine just bought one, and asked me to do the loading. Should be a fun project and make for one great shooter from what I've heard from others.

Looking for any load data that others have used. I can start from manuals, but usually like to hear what others are doing to narrow the search.

Looks like 110gr Nosler Accubonds and 100gr Barnes TTSX are popular. Favorite powder and charge?

Any help is appreciated.
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post #2 of 7 (permalink) Old 02-09-2011, 12:06 AM
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Re: 257 Weatherby?

I've had the best results with anywhere from 66.0 to 68.0 grains of IMR 4831 with 100 grain loads. should put you in the neighborhood of 3500 FPS

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post #3 of 7 (permalink) Old 02-09-2011, 02:03 AM Thread Starter
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Re: 257 Weatherby?

Quote:
Originally Posted by BONZy
I've had the best results with anywhere from 66.0 to 68.0 grains of IMR 4831 with 100 grain loads. should put you in the neighborhood of 3500 FPS
Many thanks,
Any recommendations on COAL?

Sure sounds like one smoking hot load!! If it shoots as good as it sounds, I could be looking for one myself!
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post #4 of 7 (permalink) Old 02-09-2011, 02:37 AM
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Re: 257 Weatherby?

I have toyed with these for 20 years. if you have a good barrel keep on trucking past 68 grains of i 4831 i have one shooting at 70.5 grains. also try i-7828 little slower start at 69 and go up. i have another one settled in at 73 grains 7828. there is no need for anything above 100 grain bullet. have killed many whitetail with 100 grainer. siera bt or fb, hornady 100 sp, nosler bt. i also took a cow elk with 1 shot last fall with a 100 grain sierra bt. it was from another 25 wildcat that produces 257 whby vel.
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post #5 of 7 (permalink) Old 02-09-2011, 10:22 AM
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Re: 257 Weatherby?

Is the rifle a Mark V?? I have owned 2 Mark V's in 257 Wby. Along with a few other Wby. magnum cartridge Mark V's. In all the Mark V's I owned they would not shot the lighter bullets very well. But all of them shot the heavy for caliber bullets considerably more accurate than the lighter bulets. The 120's shot much better than the 100 grain pills in both my 257's. Along with a good healthy dose of 4831.

So if you have some accuracy problems with the light pills, then be sure to try the heavier bullets before you give up on the rifle. Tom.
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post #6 of 7 (permalink) Old 02-09-2011, 02:41 PM
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Re: 257 Weatherby?

I know I used to run 120 grain Sierra's with H1000 powder. I forget the charge but it was an accurate combo.
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post #7 of 7 (permalink) Old 02-10-2011, 11:37 AM
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Re: 257 Weatherby?

no my one was blueprinted rem 700 hart 10 twist and other was a rem 700 25-06 re- chambered to whby and bolt face opened up for mag.
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