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6mm-300 WSM

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Old 12-19-2008, 10:51 PM
Junior Member
Join Date: Jul 2008
Posts: 8
6mm-300 WSM

Anybody have any experience with this round? Powders used, achievable velocity's, barrel length etc? I have an itch to put one together with a 8 twist 28-30 inch barrel for shooting the 115's. Any info appreciated good or bad. Thanks
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Old 12-20-2008, 06:10 PM
Platinum Member
Join Date: Jun 2007
Location: Fredericksburg VA
Posts: 4,128
Re: 6mm-300 WSM

If the 6.5/WSM is a barrel burner, you can count on the 6-WSM to be the barrel mftrs wildest dream come true.

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Old 12-20-2008, 10:25 PM
Junior Member
Join Date: Dec 2008
Posts: 23
Re: 6mm-300 WSM

Buy a 6 pack of barrels and get'em chambered at the same time.

All that flame into a .243 hole will be like a plasma cutter.
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Old 12-21-2008, 03:30 PM
Platinum Member
Join Date: Aug 2005
Location: Back in the south -NW FL..
Posts: 1,142
Re: 6mm-300 WSM

There is a member on here w/one .

He's from s. carolina -claims to have good luck w/ it -using barnes 85's and ball powder.
AIPAC for president !!!!!!!!!!!!!!!!!!!
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Old 12-22-2008, 08:53 AM
Junior Member
Join Date: Jul 2008
Posts: 8
Re: 6mm-300 WSM

Well I dont mind barrel burners so it sounds like its going to be perfect I already have one in a 6.5 and it is by far my most favorite rifle and the easiest one I have had to find a load for.
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Old 12-22-2008, 12:10 PM
Silver Member
Join Date: May 2007
Location: Kodiak
Posts: 174
Re: 6mm-300 WSM

I wanted to build one some time back, I did a spot of research and found several set backs. From what I read it is unfeasable because the 115 and 117 tubbs don't appear to go over 3300. Now this is just my research not actual testing. At 3300 there is little gain over a larger bore with a similar bc bullet. I think the smaller bergers would hold together better but at a lower bc. I am opting towards a 6x284 since most of the bullets available with high bc's can only be pushed so fast. You could remedy that with a barnes solid or and really drive them out there fast, but you loose bc.

If i remember correctly the fella that had one was using 85 barnes at somewhere near 3850 with a 29 inch barrel if memor serves me correctly.

If you could crank the tubb 117's out in the 35-3600 fps you could really reach out on the coyotes. Barrel life is a performance sacrifice, its just a fact of life.
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