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6mm Ackley Improved question

 
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  #8  
Old 03-26-2006, 09:46 PM
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Re: 6mm Ackley Improved question

I guess it depends on what your planning with the gun.With the twist your choosing and 75 gr bullets, 3700-3800+ velocities are very possible.Here are two very good write ups on the very subject:
http://www.6mmbr.com/gunweek021.html
http://www.6mmbr.com/gunweek042.html

I'm also in the planning stages of a 6mm AI build.Opting for a 27" 1-12 3 groove.Its also my intention to shoot 75-87 gr bullets primarily,but I'm building it strictly as my prarie dog gun.500+ yards isnt really my intended shooting distance for the gun.But with 75 gr bullets with a 1-14 twist even the author of the above article admits you really need to load to max capacities to get the 75's to stabilize.To me, in a short to mid range varmint gun, 75 gr bullets at 3700-3800 should be hang time heaven.
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  #9  
Old 03-27-2006, 07:42 AM
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Re: 6mm Ackley Improved question

Rather build a 6x55 using Lapua 6.5x55 brass.. The lapua brass is very good, AND plentifull.

Its maybe 1-2 grains difference between the 6mm Rem and 6x55.
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  #10  
Old 03-27-2006, 04:56 PM
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Re: 6mm Ackley Improved question

I guess I'll toss in my .02...
I shoot .243AI with a 1 in 14 twist, but I got that twist to shoot 55gr BTs at high velocities. Every gun but one with a twist of 1 in 10 or faster that we've tried the 75gr VMax bullets in has really liked them, so I wouldn't get a "special" twist just to accomodate them... Those VMaxs' don't seem to be overly picky.
I'll add that I've had great results from BR-2 primers and varget powder in my AI, so you may want to look into loads along that line.
Coyoter
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  #11  
Old 03-27-2006, 09:40 PM
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Re: 6mm Ackley Improved question

Well, the 6mm Ackley project has been started. I ordered my barrel and stock today. I ended up getting the Krieger Barrel with a 1-12 twist, 28" and 1.00 at the muzzle. The guys at Krieger informed me that the 1-12 would be my best bet for shooting bullets between 70 to 90 grn's. I also ordered my stock, it will be a McMillan A-5. The rifle will be used for long range squirrel killen out to 800 to 1000 yards. I will be using the 75grn V-MAX because we do not contend with too much wind out here in California, so I think it will be an excellent choice for my attended purpose with maximum Mist Effect even at long ranges. The rifle will consist of the following;
1. Remington 700 Action trued in a Speedy Gonzalez Sleeve
2. Action blue printed to a Krieger 28", 1-12 twist, 1.250 at the breech and tappered to 1.00 at the Muzzel.
3. Holland Muzzle Brake
4. McMillan A-5
5. Jewell Trigger
6. Kelby rings
7. Nightforce 12x42x56mm NXS,
I keep hearing how good this caliber is for varmint hunting at long ranges. I mean a 75grn V-MAX traveling at 3850 fps is going to be a straight shooting SOB. I will not receive my parts for about 12 weeks, and my Gun Smith said it will take him about 4 weeks to complete everything. It should be completed by July. I will let you all know how it shoots during fire forming. Thanks for the info. Wildcat.
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  #12  
Old 03-27-2006, 09:46 PM
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Re: 6mm Ackley Improved question

I forgot to ask what kind of brass should I use. I ve noticed that Lupa and Norma do not make 6mm Remington Brass, or due they. What other brass can I use. If Norma and Lupa don't make the brass I need, I will probably use Winchester. Any additional info would be great! Thanks, Wildcat.
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  #13  
Old 03-28-2006, 10:56 AM
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Re: 6mm Ackley Improved question

Norma 7X57 can be reworked.I bought 1000 pcs of Win. from Powder Valley and found it to be pretty uniform.
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  #14  
Old 03-29-2006, 12:19 AM
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Re: 6mm Ackley Improved question

wildcat,
I have a 6mmAI with a hart 1-12" tube, I would never do it again with anything but a 1-8" so I could shoot hi B.C. bullets. you say that you will be using it out to 1000yds on squirrels a 1-8" is better any day of the week than a 1-12". if you want come borrow mine so you dont waste your own money.
UB
P.S. if you really want to shoot medium weight bullets you are better off with a case of less capacity.
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