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Hart HV .308 barrel, 1-9" - what to do with it??

 
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  #8  
Old 11-20-2002, 07:31 AM
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Re: Hart HV .308 barrel, 1-9" - what to do with it??



[ 03-14-2004: Message edited by: BountyHunter ]
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  #9  
Old 11-20-2002, 09:24 AM
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Re: Hart HV .308 barrel, 1-9" - what to do with it??

http://www.accuratereloading.com/76239.html

Saeed has demonstrated consistent sub moa accuracy from the 240grMK at a paltry 1700-1800 fps.....from the 7.62x39mm case and a 1-10 twist barrel.

MM
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Old 11-21-2002, 08:45 AM
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Re: Hart HV .308 barrel, 1-9" - what to do with it??



[ 03-14-2004: Message edited by: BountyHunter ]
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Old 11-21-2002, 09:57 AM
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Re: Hart HV .308 barrel, 1-9" - what to do with it??

I too agree with Bountyhunter concerning his thoughts on the 240 gr bullets.

They tend to want larger case capacity cartriges to perform well in the LR hunting fields.

I too shoot 1000 yd benchrest compititions and for paper, the smaller cases are fine.
For wind bucking across the mountain ridges, more velocity is needed so the bullet will perform well on game. The same holds true for the 300 gr 338. You need more velocity and that means longer barrels and more case capacity.

The 10 twist will stabilize the 200, 220 AND 240 gr bullets VERY well. You don't really need the 9 twist for the 240 however, some barrel manufacturers recomend it.

I shot the 10 twist and 240 gr bullets in the 300 Tomahawk and the 30/378. Those rounds and the 10 twist also like the 220 and 200 gr bullets too.

Who ever thought afew years ago that the 11 twist would work so well with 210 to 220 gr bullets?? They work just fine even though most barrel makers "WERE" suggesting 10 twist for those bullet weights.

Later and good hunting/shooting to all.
DC
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Old 11-21-2002, 01:10 PM
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Re: Hart HV .308 barrel, 1-9" - what to do with it??

Sorry to be confusing Bountyhunter,

What I'm interested in is this: What velocity do you think the 240grSMK needs to be started at in order to be accurate from a 1-9 twist barrel.

MM
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Old 11-21-2002, 01:25 PM
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Join Date: Nov 2002
Location: Mount Joy, PA
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Re: Hart HV .308 barrel, 1-9" - what to do with it??

Thanks for the discussion. MM - I have a 300/221 with a 1-8" barrel and I've never had any bullet stabilization problems from subsonic (~1050fps) loads with 220 or 240g SMK's. But, I've never shot this load at ranges greater than 100 yards, so my experience is limited.

I think I going to use my barrel to build a fun gun - a 7.62x39 or a 30BR, put it on an X-Course stock and have fun at the club beating up the steal with big bullets.

I feel like I'm trying to make a barrel fit a project it wasn't made for - I need to start from scratch and order myself another barrel with my 3-600yd shots as the primary objective per the advice of BountyHounter.

Thanks to all for your guidance and experience.

-Joe

[ 11-21-2002: Message edited by: Joe G ]
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  #14  
Old 11-21-2002, 01:52 PM
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Re: Hart HV .308 barrel, 1-9" - what to do with it??

Joe, A 7.62x39mm or a .308Win would be pretty fun, and have loads of bargain priced surplus ammo to play around with, as well as the heavy roll-your-own stuff.

I'll bet if you went .308, it would kill deer pretty dead out to 600yards with any Matchking from 168-240 grains. [img]images/icons/wink.gif[/img] [img]images/icons/grin.gif[/img]

MM

[ 11-21-2002: Message edited by: MontanaMarine ]
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