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6mm advice wanted

 
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  #1  
Old 10-02-2010, 09:16 AM
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6mm advice wanted

I am going to build a 6 but there are too many choices, I plan to hunt deer and goats out to 500 if conditions are right and shoot some targets with it. I want it to feed decent from a magazine and be around 10-12lbs with optics. I have looked at the 6X47, 243, 243ai, 6xc. but i am having a hard time choosing, i want the best barrel life but would want to shoot 105-107 and possible the 115s

please let me know what you have and why
thank
jared
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  #2  
Old 10-02-2010, 10:41 AM
TMR TMR is offline
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Re: 6mm advice wanted

Jared,

I have built and shoot all but the 6XC. Getting a 10-12lb rifle with optics isn't that hard in this caliber of rifle.

Sendero Contour
Short Action
HS, Manners, or McMillan stock
NF scope


Here are the break downs in velocity

6x47L
105 Berger 3180-3300 26-30" barrel
115 Dtac 3050-3100 (only tested in 26-28" barrel)

243Win
105 Berger 3000-3150 26-28" barrel
115 Dtac 3050-3100 26-28" barrel

243AI
105 Berger 3250-3350 26-28" barrel
115 Dtac 3200-3290 26-28" barrel


The 6x47L just takes running 6.5x47 Lapua brass into the 6x47 FL sizer, load and go shoot. Point of impact is the same. Extremely easy to load for and very accurate.

243 Win is pretty straight foward. If setup correctly, is accurate as hell and easy to load for.

243AI requires fireforming. With my 115 Dtac's and 105 Bergers, I run the same load in the virgin cases as I do in hot loads. I used to back down some, but I found that case life is the same and point of impact and velocity are almost identical. I also have a fireform barrel that I can make alot of cases in fast and that saves on barrel life. This is the caliber I use the most. I run 115's Dtacs at 3240 in a 27" barrel. Hits hard and fights the wind pretty well.


Hope this helps. All of these would take deer out to 600 if the shooter can place the shot. I have shot deer and antelope out to 950 with the 243AI and had no problems at all.
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  #3  
Old 10-02-2010, 11:21 AM
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Re: 6mm advice wanted

that does help, didnt think you could get that much out of the 243AI with 115s,

I have a 700SA in a mcmillan that i was planning to use i have a box of 243 lapua brass so i was leaning that way, just its a 223wssm now so i will have to get a bolt from ptg i guess, what about twist for the 115s in the ackley, will a 1/8 work or will it need to be 1/7 and whos barrel, was thinking about trying a brux but havent ever used them

thanks
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  #4  
Old 10-02-2010, 06:13 PM
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Re: 6mm advice wanted

I have several of the big 6mm's. For your purpose considering extended barrel life I would go with the 243 AI. It is one of the most accurate rifles ever designed and will easily serve your purpose. The big 6mm's off the '06 case are faster by 200 fps but barrel life suffers with the target shooting. After all things are considered the 243 AI is one of my favorite rifles.
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  #5  
Old 10-02-2010, 07:56 PM
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Location: greenwood, IN
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Re: 6mm advice wanted

Quote:
Originally Posted by jacack View Post
I am going to build a 6 but there are too many choices, I plan to hunt deer and goats out to 500 if conditions are right and shoot some targets with it. I want it to feed decent from a magazine and be around 10-12lbs with optics. I have looked at the 6X47, 243, 243ai, 6xc. but i am having a hard time choosing, i want the best barrel life but would want to shoot 105-107 and possible the 115s

please let me know what you have and why
thank
jared
I've been a 6mm nut for a long time. Started out like most did with a .243, and looked for greener pastures soon afterwards. I found that anything a .243 could do, the 6mm would do alittle better. The heavier the bullet the wider the gap. I've never owned a 6x47, so can't say much. But I do own a 6x250AI with a 1:8 twist barrel. It's not perfect, but still better than most would expect. I can hit 3000fps with 107 grain bullets, and hold .25" groups at 100 yards. On the otherhand the 6mmHLS is a better round than most anything else out there, and very easy to built a rifle on. The HLS would be my choice by a wide margine
gary
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  #6  
Old 10-02-2010, 08:03 PM
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Re: 6mm advice wanted

Never heard of that one, what's it based on?
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  #7  
Old 10-03-2010, 04:56 AM
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Re: 6mm advice wanted

If you want to buy ammo over the counter go with the 6mmBR, and an 8 or 9 twist to handle the heavy bullets. Cooper can build one with your specs at a pretty reasonable price.

If you stuff your own, any of those mentioned above are OK. I question 3200 fps with the 243 AI and 115 gr. bullets. I am shooting a 6 Dasher with 26" barrel, and 105 gr. Bergers, I can't get over 3100 fps.
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