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03-16-2021, 07:19 PM
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Join Date: May 2020
Posts: 24
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300 WBY Handloads
Planning on working up a load for my 300 weatherby mag. I’m new to reloading so this will be all new to me. I have been doing a bit of research on powders etc. Does anyone have recommendations on a temperature stable powder that works well in magnums? Nosler load data recommends IMR 4831. Most of my hunting is late November. As far as bullets go I managed to get my hands on some 168gr accubond LR. Not ideal as I’d like to load the heavier 190gr but you have to start somewhere. Any input would be greatly appreciated.
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03-16-2021, 07:44 PM
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Banned
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Join Date: Mar 2009
Posts: 5,701
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I’d be looking at h1000 or h4831 sc
Better temp stability
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03-16-2021, 07:44 PM
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Join Date: Sep 2015
Posts: 1,841
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Mine likes imr -4831 and imr7828 with similar results.
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03-16-2021, 07:51 PM
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Join Date: Mar 2008
Location: Caroline
Posts: 7,272
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I've always used H4831 in a 300 wby. It's always worked so never used anything else. I'm sure your IMR will work as well. Give it a go and see
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03-16-2021, 08:00 PM
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Join Date: Apr 2015
Location: Lloydminster
Posts: 4,518
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When I loaded for mine it was H4831 with 180gr nosler accubond, but it did like H1000 also but it was hard to come by a lot of the time
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03-16-2021, 08:54 PM
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Join Date: Oct 2011
Posts: 213
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Just did some load development for a friends .300 wby.
Hornady 212gr Eldx ,80.6 gr IMR 7828 , coal 3.724” chrony avg 3022fps, std dev of only 3.
Nosler 180 gr Accubond , 84.5 gr IMR 7828 , coal 3.699” chrony avg 3277 fps, std dev of 5.
Played around with h4831 but IMR 7828 produced beter velocity and better groups. Hope this helps.
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03-16-2021, 08:59 PM
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Join Date: Aug 2009
Location: AB
Posts: 6,638
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Quote:
Originally Posted by Manning74
Nosler 180 gr Accubond , 84.5 gr IMR 7828
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That is my best/most accurate load out of my 300WBY that The gun has been shooting for many years.
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03-16-2021, 09:39 PM
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Join Date: Oct 2011
Posts: 213
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Quote:
Originally Posted by whitetail Junkie
That is my best/most accurate load out of my 300WBY that The gun has been shooting for many years.
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Only issue now is its hard to find , should have picked up a few lbs when i had the chance .
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03-16-2021, 11:41 PM
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Join Date: Aug 2009
Location: AB
Posts: 6,638
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Quote:
Originally Posted by Manning74
Only issue now is its hard to find , should have picked up a few lbs when i had the chance .
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X2...alot has dried up and is going to get worse for a while longer...however im sitting on just under 8 pounds of it so ill be good for abit.
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03-17-2021, 12:00 AM
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Join Date: Oct 2014
Location: West Kelowna B.C.
Posts: 410
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I found on the web 81 or so is max for IMR7828 with 180 grain Bullet
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03-17-2021, 09:07 AM
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Join Date: Aug 2009
Location: AB
Posts: 6,638
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Quote:
Originally Posted by partsman
I found on the web 81 or so is max for IMR7828 with 180 grain Bullet
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Better open up a Nosler reloading manual and not the web...
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03-17-2021, 05:13 PM
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Join Date: Oct 2014
Location: West Kelowna B.C.
Posts: 410
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Will have to look, thanks got it from hogdons site
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03-17-2021, 08:08 PM
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Join Date: Oct 2011
Posts: 213
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Hodgson site is very conservative with its load data . In 6.5 prc it has 57.7 gr H1000 as max load and im running 63.0 gr with 0 pressure sign.
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03-19-2021, 12:40 PM
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Join Date: May 2007
Posts: 1,619
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84.5 Grains of 7828 with a 180 Grain Nosler Partition gives me an accurate 3224 FPS. What more could I ever need.
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03-19-2021, 05:03 PM
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Join Date: May 2020
Posts: 24
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Thanks everyone. Got some powder will post results!
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