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Primer recommendation for .300WM

 
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  #8  
Old 03-14-2009, 06:35 PM
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Join Date: Mar 2006
Posts: 847
Re: Primer recommendation for .300WM

Best results with FED 215's, GMM when I can get them.
I tested the 215's against the Win, Win Mags, and 210's.
215's yielded the best groups and es/sd --single digit
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  #9  
Old 03-15-2009, 01:59 PM
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Join Date: Feb 2008
Posts: 83
Re: Primer recommendation for .300WM

I spent months developing a load for my factory
300 Win Mag Greywolf SAKO 75
with no bedding and 1-1/2 lb. factory trigger.
Scope is NXS 5.5-22 x 56mm in opti-loks

I compared FED210 Match Gold & FED215Magnum Match Gold using same bullet, brass, powder and same amount of powder.... there was no difference in accuracy, average velocity, ES or SD

My pet load:
Lapua brass, Berger 210gr. seated 4 thou from rifling, 80.o H1000
avg velocity 2853 fps ES 35.67 SD 13.11
----------------------
all of the above components and formulas... but using magnum primers
avg velocity > 2860 fps ES 24.32 SD 9.38

Approx. 1/2" groups @ 100 yards most times
Huge recoil and muzzle blast

Last edited by AlbertaAl; 03-15-2009 at 02:05 PM. Reason: added information
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  #10  
Old 03-15-2009, 03:08 PM
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Join Date: Dec 2008
Location: SW Idaho
Posts: 193
Re: Primer recommendation for .300WM

Hey Al - thanks for the info.

What kind of powder do you use with the loads you mention above?

Also, what is your COAL with your 210gr Bergers? Do you have any issues with their overall length and your rifle's magazine?
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  #11  
Old 03-15-2009, 04:48 PM
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Posts: 83
Re: Primer recommendation for .300WM

H1000 is what I'm using with the Berger 210's

My initial testing was done with other brand bullets ...Nosler Accubonds and Partition and Wildcat in the 180 and 190 weight using IMR4350 and RL22 but the accuracy and chrony readings weren't as good as the 210 BERGER with H1000

I've got no issue stacking these in my clip or feeding.

I use a stony point gauge to establish OAL
***Very important / for best accuracy***
Be sure to seat the BERGER bullet 3-4 thou from the rifling.

Good luck and glad to help, if I did.
AL
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  #12  
Old 03-16-2009, 07:40 AM
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Join Date: Mar 2006
Posts: 847
Re: Primer recommendation for .300WM

I've had great success with H1000 and IMR7828. I tend to lean toward H1000.

Often there is very little difference in primer. In may case it was a very small difference. Of course what showa up on target at long range is what really matters.

Alberta Al -- an SD of 9+ for 215's and 13+ for 210's seems like a big difference.

The results I had were close as well, virtually identical, but the edge went to the 215's.

Here's my data with IMR 7828.
200gr smk and 73.3, I7828 @3.495"oal ave velocity


The data:
WLRM -es-19, sd-9 .521"@100yds
fed 210- es-19,sd-9 .43"@100ydds
fed215-es-17,sd-7 .389@100yds

Very close but the 215 were a little better, and it shows on target when shooting past 600yds

Last edited by RockZ; 03-16-2009 at 08:07 AM.
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  #13  
Old 03-17-2009, 06:07 AM
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Join Date: Dec 2008
Location: Great Falls, MT
Posts: 4,383
Re: Primer recommendation for .300WM

Quote:
Originally Posted by bookworm View Post
Thanks for the inputs - very helpful.

Does anyone know the difference between "Match" primers like the Federal #215 and standard primers like the CCI #250?

Are Match primers worth the extra pennies?
Try these ...

Fed large mag v/s match mag primers -

Match grade primers? Anyone use them? - HuntingBC.ca

Re:Match primers vs standard primers - The Best of the West

Good luck!


Ed
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  #14  
Old 03-18-2009, 03:34 PM
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Join Date: Sep 2008
Location: Behchoko, NT
Posts: 50
Re: Primer recommendation for .300WM

Quote:
Originally Posted by bookworm View Post
Does anyone know the difference between "Match" primers like the Federal #215 and standard primers like the CCI #250?

Are Match primers worth the extra pennies?
Not a darm bit of difference between teh Feeral 215s and 215Ms. They test a lot and if it turns out to be somewhat more accurate they call them 215Ms. Biggest scam out there.
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