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300 WSM Loads

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Unread 02-21-2009, 02:19 PM
Silver Member
Join Date: Jun 2008
Location: Texas
Posts: 446
300 WSM Loads

I'm planning on loading my 300 WSM with 165gr and maybe 180gr bullets.The powders I'll be working with are:
Winchester WXR
Anybody got any load suggestions with these powders.
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Unread 02-21-2009, 02:38 PM
Platinum Member
Join Date: May 2008
Location: South of Canada and North of Wyoming
Posts: 6,068
Re: 300 WSM Loads

You might look at H4350 and Reloader17. Start around 61-62grs and look for max about 65 give or take, depending on bullet and seating.

Haven't used the other powders in the 300 WSM, so cant help you there.
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Unread 02-21-2009, 02:59 PM
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Join Date: Jan 2008
Location: Gillette WY
Posts: 917
Re: 300 WSM Loads

I have had good luck with H-4350 also. 168gr. i am using 64gr. of H4350
Remington 700 7mm SAUM Magnum Research Barrel
Savage Target Action 6.5x47 Lapua
Savage Predator Hunter Max1 6.5-284 Norma
Savage Bear Hunter 338 Win Mag
"Gotta Kill It Before You Can Grill It"
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Unread 02-21-2009, 04:49 PM
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Join Date: Feb 2009
Location: Dawson Creek, British Columbia
Posts: 43
Re: 300 WSM Loads

One of my favourite hunting loads is 69.5 grains of WXR with CCI250 primers and 180 grain Fail Safes. Velocity is ~2950 with sub-MOA groups. 68.5 grains of WXR and WLRM primers gave good groups with both 180 grain Nosler Partitions and 180 grain Kodiaks. I have used this load with Speer Grand Slams with good results (3/4 to 1 inch groups and velocities to 3000 fps @ 70 grains).

63 grains of IMR4350 and WLRM primers yields sub MOA groups with Hornady 180 grain SP (velocity = 2850). Upping charge to 65 grains yields velocities of 2950 without degrading groups size significantly. 65 grains of IMR4350 and WLRM primers gives 1/2 inch groups with 180 grain Hornady InterBonds and velocities of 2967 +/- 8 fps.

With 165/168 grain bullets, I have had excellent success with IMR4831, RL15 and H380.
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Unread 02-21-2009, 06:34 PM
Platinum Member
Join Date: Mar 2007
Location: MN
Posts: 1,219
Re: 300 WSM Loads

I have good luck with H4350, CCIBR2, win cases, and 180 Nosler AB's. I used to use IMR4350 but switched to the Hodgdon extreme line simply because of the temp sensitivity of the older IMR poweders.
I used to re-load but now I "hand-load".
-- Well, at least I try --
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