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Re: 300 win mag loads
[Re: FreeStateHunter]
#3698956
06/28/22 09:13 AM
06/28/22 09:13 AM
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Joined: Sep 2012
Posts: 18,050
North AL
AU338MAG
Old Mossy Horns
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Old Mossy Horns
Joined: Sep 2012
Posts: 18,050
North AL
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I've got one 300 win mag that just likes H4831 powder, no matter the bullet. I've used 180 gr Accubonds in the past and I now shoot 190 gr Berger's in it. I won't tell you my charge because it's several grains more than max loads in the guides, but it works without pressure issues in this gun. Other powders, R22, H1000 and a couple others I've tried have not had the same accuracy in this gun.
My other 300 win mag I load a 180 gr Sierra GK over 71 gr of IMR 4350. Just a little over 3000 FPS.
R22, R23, IMR7977, H1000 would be a good starting point with the 200 gr bullets IMO.
Dying ain't much of a living boy...Josey Wales
Molon Labe
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Re: 300 win mag loads
[Re: AU338MAG]
#3698971
06/28/22 09:33 AM
06/28/22 09:33 AM
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Joined: Mar 2020
Posts: 7,076
Free State of Winston
FreeStateHunter
OP
They Call Me Gator 🐊
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OP
They Call Me Gator 🐊
Joined: Mar 2020
Posts: 7,076
Free State of Winston
|
I've got one 300 win mag that just likes H4831 powder, no matter the bullet. I've used 180 gr Accubonds in the past and I now shoot 190 gr Berger's in it. I won't tell you my charge because it's several grains more than max loads in the guides, but it works without pressure issues in this gun. Other powders, R22, H1000 and a couple others I've tried have not had the same accuracy in this gun.
My other 300 win mag I load a 180 gr Sierra GK over 71 gr of IMR 4350. Just a little over 3000 FPS.
R22, R23, IMR7977, H1000 would be a good starting point with the 200 gr bullets IMO. 4350 and 4831 have definitely been my hard looks. I’ve never used Retumbo but there seems to be a lot on it as well.
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Re: 300 win mag loads
[Re: FreeStateHunter]
#3699614
06/29/22 10:58 AM
06/29/22 10:58 AM
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Joined: Sep 2012
Posts: 18,050
North AL
AU338MAG
Old Mossy Horns
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Old Mossy Horns
Joined: Sep 2012
Posts: 18,050
North AL
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IMR 4831 also works well in a 300 Winny. I loaded 180 gr Barnes for a friend of mine's A Bolt using IMR 4831 with good accuracy and velocity.
But DO NOT substitute load data for H4831 for IMR 4831.
Dying ain't much of a living boy...Josey Wales
Molon Labe
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Re: 300 win mag loads
[Re: Stefan]
#3699618
06/29/22 11:10 AM
06/29/22 11:10 AM
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Joined: Mar 2020
Posts: 7,076
Free State of Winston
FreeStateHunter
OP
They Call Me Gator 🐊
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OP
They Call Me Gator 🐊
Joined: Mar 2020
Posts: 7,076
Free State of Winston
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I’m with Jtb51b. That little orange IMR bottle works for my 300WM as well. 208 gr ELD-M’s through my daddy’s old A-Bolt produced 3/4 MOA with the first load I tried. I experimented with 212 gr. ELD-X’s and got similar results. I bought some H1000 but haven’t bothered to try it yet.
I’m interested to hear about anyone else’s success/failure with heavy grain projectiles as well. This is good news. I’m going to start out with my IMR 4831 and see what happens. I bought two jugs of it last year just because stock everywhere was low and it was on the shelf. Thanks for all the input y’all
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