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300 win mag. loads?

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Unread 03-25-2003, 08:57 PM
Silver Member
Join Date: Mar 2003
Location: PA
Posts: 196
300 win mag. loads?

I just recently started getting into LR hunting. I am interested to know if anybody has recommendations on loads for a 300 Win Mag shot out of an accurized Model 70. Shots will range from 400 yds to 1000 yds but no further. Thanks
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Unread 03-27-2003, 01:56 PM
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Re: 300 win mag. loads?

Rem 700, 26" barrel
300 win mag
159gr EXP Groove Bullet
79gr of Rel 22, no pressure signs
CCI-BR2 Primer
Norma Case
3.505" OAL, .015" off the lands
Average Velocity = 3410 FPS
3 shot groups at 100 yards = .375"

As always, start with a lessor powder charge and work up slowly.

This is now my 1000 yard range load for deer hunting.

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Unread 03-28-2003, 09:01 AM
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Join Date: Mar 2003
Location: PA
Posts: 196
Re: 300 win mag. loads?

Shaky, This seems like a very light bullet for that distance. Do you notice any down range problems with penetration?
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Unread 03-28-2003, 02:09 PM
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Re: 300 win mag. loads?


I have not killed a deer at 1000 yards, yet. My limit as of right now is 650 yards. I don't see the 159gr EXP bullet representing a problem as to penetration out to 1000 yards, on deer. Groove Bullets are relatively new to the market. Once we get more hunters using the bullets I am certain that they will like the results. I am in the final process stages of bringing out a LR bullet for 30 caliber that will be in the 180gr range. This bullet will be for single shot - non repeating type firearms. As soon as I obtain more data, I will be sure to pass it along.

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Unread 04-13-2003, 11:20 PM
Junior Member
Join Date: Apr 2003
Location: Canyon Lake California
Posts: 3
Re: 300 win mag. loads?

I too shoot a 300win mag for long range deer hunting. My load is IMR 4350, nosler 165gr B.T. seat depth is three thousands off the lands. I shoot a tuned rem40x and have shot six deer with this combo out to six hundred yards. Bullet peformace was great no anminal needed a second shot. No bullets have been recovered all have exited.
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Unread 04-21-2003, 06:48 AM
Bronze Member
Join Date: Sep 2002
Location: North West Ontario, Canada
Posts: 39
Re: 300 win mag. loads?

Try this one ...
71.0 Gr of IMR 4831
Fed 215M primer
190 gr Sierra Match King
OAL 3.505 (.005 off the lands)
This should give you an average Vel of 2875 fps....at least it does in my gun..a Savage 112 HB SS.It shoots consistently under 1/2 MOA.I also de-burr the flash hole...turn my case necks to .015 and unifrom the primer pockets. I've had NO signs of pressure with this load at all. Hope it works as good for you as it does me.
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Unread 04-21-2003, 07:09 AM
Platinum Member
Join Date: May 2001
Location: Pennsylvania
Posts: 1,757
Re: 300 win mag. loads?


We need to know the barrel length, twist and animal you are going after, unless I missed that. You say 400 to 1000 yards with a custom, accurized or factory rifle?

Digger has given you the best advice so far from what I read as per the loads I have used and the primer choice for the 300 Winchester mag. He has a factory rifle I believe.

The 190 works very well in a 300 Win mag and bullet choices up to 220 gr work well also.
The 210 Bergers and JLK work extremely well too.

It's hard to beat the Federal primers and the 210 OR 215 will work in the 300 Win mag. I stopped using CCI primers long ago because of hang fires in longrange 1000 yard matches. I know of nobody at Williamsport that usues primers other then Federal or Winchester for match shooting or even LR hunting.

Try the most accurate bullet your rifle likes and go from there.
Check some of the loading manuals and see what they reccomend for a starting load and work up from there.

As an after thought here, If recoil is a factor, the 168 gr Sierra MK may work well in your rifle.

Good luck

[ 04-21-2003: Message edited by: Darryl Cassel ]
Darryl Cassel
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