Berger 210 300WM load query

mmmooretx

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Jul 7, 2009
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Greenbrier, Arkansas
I have a Ruger 77 MKII with Kreiger 24" 1:10 twist shooting .43" groups at 100 yards using 200 gr. SGK 0.010 off the ogive, and 78.5 gr. of H1000. My groups with the Barnes TTSX 185 gr. are 1/2" higher (100 yards on both) but similar grouping but with 0.040 off the ogive.
I have a set of 100 Berger 210 gr. hunting rounds ordered and and would appreciate what Bergers like off the ogive and powder. I have H1000, H4831SC, and Retumbo. Any inputs would be greatly appreciated and thanks in advance.
 
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Broz

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Townsend, Montana.
I assume we are talking Win Mag not Weatherby Mag.... Our 300 Win shoots very well with a 27" Broughton 10 twist 210 Bergers .005" off the lands. I started .010" in and worked out. When I got to .005" out the ES and grouping was good enough I called it the load. We use 77 gr of H-1000 and a 215 Fed GM in Lapua brass. Velocity in the 2900 range. Took a small doe antelope last week at 813 yards with it, right where I was aiming.

Jeff
 

mmmooretx

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Greenbrier, Arkansas
Thanks Jeff, I'll use that data and yes it is a Win Mag. However all I have at this time is the CCI Mag. primers. I appreciate the advice on a good starting point to find the sweet spot in my gun!
 

Broz

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You are welcome. I hope it shoot as well for you, or better. Not saying I can do this every time,, but I did it once..:D


 

mmmooretx

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Greenbrier, Arkansas
That is SWEET! My current range is limited to 300 yards, but I have found another within 1/2 hour that goes up to 1000 yards for a humbling experience....
Thanks again.

Just got an update from Midway and my Berger 210 hunters have shipped. I guess that means I will be doing some test firing next Sat. If it looks good I'll post some holie paper!
 
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montana_native

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Oct 4, 2008
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SW Montana
I'll echo what Broz said to a degree.

Same distance to lands, 75.7 gr H-1000, CCI250 and Winchester brass match prepped. Right at 2900 fps also out of a 26" McGowan barrel and consistently shoots about 0.3 MOA sometimes better. ES is about 10-12.
 

mmmooretx

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Jul 7, 2009
Messages
78
Location
Greenbrier, Arkansas
More good info! Cases are all prepd. except for neck turning (flash hole, primer pocket, fire formed, length trimmed) tool for turning soon. I have the CED M2 & RSI software, Pressure Trace II is on my wish list, data nerd...
Not sure where I will start on the powder as I was getting near 2900 fps with 78.5 gr. H1000 with the SGK 200 gr. bullet in my 24" Kreiger
 

mmmooretx

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Joined
Jul 7, 2009
Messages
78
Location
Greenbrier, Arkansas
I got them in last night and they look very supersonic in design. As my barrel is shorter than both of yours 24 vs 27 & 26" I think I will use 76-77.5 gr. of H1000 to find the sweet spot in four groups of 3. I will keep the set back at 0.005 as both of you like and just vary the powder initially. Saturday will be fun I will use my CED M2 to look for the fps average in each group and hopefully will post a pretty grouping at 100 yards for the set up. Thanks again for your support and insight in this round development, you saved me some $$
gun)

Wednesday night I got my loads done and have charged the battery for the IR screens on my CED M2. I can assure you that I will be at the range before 7:30 doing set up and will start shooting at 0800 per club rules. I still have to do the round data entry in the RSI Ballistic software so I can enter my target data and chrono. data for a file to keep. Hmmm two whole days DARN! Maybe if the ISO auditors finish with me I can slip out early and......
 
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