6.5/300 WEATHERBY target loads need

DANTEC

Well-Known Member
Joined
Jul 6, 2002
Messages
390
Location
France
I have start to built a 6.5/300 Wea with a 32 inch barrel in block barrel I need starting load with 140/142 gr SMK or 139 Lapua .

I can find powder : RL25 , AA8700 ,Vita N170
Vita N165 and SNPE SP13 ( close to H8700 ).

thanks in advance .

DAN TEC
 

Darryl Cassel

Well-Known Member
Joined
May 7, 2001
Messages
1,757
Location
Pennsylvania
Hello

My favorite longrange hunting load for the 6.5/300 Weatherby has been 85 grs of WC872 (like H870) and the 140 or 142 gr Sierra MK.

In cold weather, I can go to 87 grs of that powder. The WC872 is just a tad slower then H870 so you may not be able to go the extra 2 grs if your using H870.

Darryl Cassel
 

Steve Shelp

Well-Known Member
Joined
May 3, 2001
Messages
351
Location
NC
DANTEC,
For an all out accuracy load and not worrying about velocity, I've always had very good luck with IMR7828 in the 6.5/300 WWH w/140gr class bullets. But the velocity is down near a good stiff 6.5-06AI or 6.5 Gibb load also. So your kind've wasting a 6.5-300 WWH by doing it. Just thought I would mention it based on your post's subject line.
I've tried it in 2 of my 6.5s and 2 others rifles owned by friends in HG and sporter configuration and IMR7828 improved accuracy in all of them with the slower speed. You will run into pressure before you match the speed of H870 or the surplus powders that Darryl pointed out.
When I hunt with mine 7828 stays home. Been to long though. Plus I haven't bought any new 7828 in many years so the burn rate may have changed alot sinse then also.

We usually ended up around 71 to 72gr of IMR7828 for accuracy. Remember to start low. Sorry had to say it.

Steve
 

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