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25-06 vs 25-06AI

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  #8  
Unread 01-17-2010, 06:53 PM
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Join Date: Jan 2005
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Re: 25-06 vs 25-06AI

I had Bob White from (Theshooterscorner) build me a 25-06AI with a 284 neck. I am shooting 100g sierria matchkings at 3366 fps using 4831sc. I have killed a bucket full of prairy dogs at 750+ a few at over 800 and 1 hit but not killed at 1100 yards. I am getting 2 shot groups of around .300 at 100 yards with a SD in around 6 or 8. I built the rifle to be a solid 500 yard groundhog gun but it has proven to be much more than that. I probably kill 3 out of every 4 groundhogs I shoot at with 1 shot at 500 yards.
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  #9  
Unread 01-18-2010, 01:00 AM
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Re: 25-06 vs 25-06AI

Thanks for all the feedback guys, much appreciated!

Crane, the 25 STW would be a smoker but I think it would be just too overbore and I dont favor belted cases. I've read some intertesting stuff about I7828 and it might be worth trying.

BillR, thanks for the tip on the neck chambering. I'll keep it in mind. I tried Retumbo in the 25-06 which gave me 3300 fps with 110 AB's but RL17 beat it by 200 fps with the same bullets and good accuracy.

Mike33, I would compare RL17 to H4350 but much faster velocities. I would recommend about 1/2 to 1 gr higher starting load with RL17 than H4350.

Rich, What is the 6.5 Sherman? It sounds interesting but I like the idea of going with the 65.-06 AI because it matches the 25-06 AI kind of and I can use the same dies. If I got a lot of 500 Lapua brass I could separate in half by wieght. Would I get 6% more capacity or 6gr more capacity? From what I can gather it might be 6 grs and 10-11% more capacity??? Since you've shot both extensively you should know. I may be interested in that Sherman reamer, ya never know. Thanks for the offer.

Thanks for the input and keep it coming. Also read somewhere that the sharper AI shoulde was better for case life???


Mark
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  #10  
Unread 01-18-2010, 12:10 PM
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Re: 25-06 vs 25-06AI

Quote:
Originally Posted by MontanaRifleman View Post
Thanks for all the feedback guys, much appreciated!

Crane, the 25 STW would be a smoker but I think it would be just too overbore and I dont favor belted cases. I've read some intertesting stuff about I7828 and it might be worth trying.

BillR, thanks for the tip on the neck chambering. I'll keep it in mind. I tried Retumbo in the 25-06 which gave me 3300 fps with 110 AB's but RL17 beat it by 200 fps with the same bullets and good accuracy.

Mike33, I would compare RL17 to H4350 but much faster velocities. I would recommend about 1/2 to 1 gr higher starting load with RL17 than H4350.

Rich, What is the 6.5 Sherman? It sounds interesting but I like the idea of going with the 65.-06 AI because it matches the 25-06 AI kind of and I can use the same dies. If I got a lot of 500 Lapua brass I could separate in half by wieght. Would I get 6% more capacity or 6gr more capacity? From what I can gather it might be 6 grs and 10-11% more capacity??? Since you've shot both extensively you should know. I may be interested in that Sherman reamer, ya never know. Thanks for the offer.

Thanks for the input and keep it coming. Also read somewhere that the sharper AI shoulde was better for case life???


Mark
The Sherman case is a blown out .270. At first glance it looks just like the A.I. case but if you put them side by side there is an obvious difference. Both share the 40 degree shoulder but the Sherman shoulder is farther forward and there is less taper in the body. I was able to do this by taking advantage of the longer .270 case and still maintain a good neck (.300). The case capacity is 11%. It holds a little over 70 grs. of h2o to the base of the neck and 74-75 grs full. I can push a 140 at 3200+ with a 26'' barrel but thats a little hot. 3150 is fine! With a 30" barrel I have no doubt 3350 to 3400 would be attainable.....Rich
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  #11  
Unread 01-18-2010, 12:58 PM
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Re: 25-06 vs 25-06AI

Rich, you've really got me looking at the Sherman. What would the 25 cal version be called? The 257 Sherman? I wonder how much more throat wear I would be seeing? Need to check on the availability and price of dies.
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  #12  
Unread 01-18-2010, 01:43 PM
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Re: 25-06 vs 25-06AI

Mark......Call Lonnie Hummel at Hornady ((308) 382-5761. He has the specs on my case and is a great old guy to talk to. He can build you a custom set for under $200. I think the 40 degree shoulder and the longer neck help cut down on throat erosion over some cases with similar capacity. Lonnie thinks it is a well designed case, in fact I used him as a sounding board when I designed it. I also have a 300 Sherman that I'm working on right now. I have a reamer for it as well. The 25 would be a real screamer for sure. .257 Sherman would be fine.....Rich
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  #13  
Unread 01-18-2010, 02:45 PM
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Join Date: Sep 2009
Location: Malta NY
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Re: 25-06 vs 25-06AI

Rich,

I like Mark have an older Sendero 25-06 that is looking more and more like I will need to rebarrel. I will know once I get back to the range again.....it may have been excessive Moly build up that was causing my Berger non molyed rounds to not be consistant....time will tell.

Your Sherman wildcat seems special.

What Barrel manufacturer, twist, groove would you go with if you were rebarrleing again? Would 30 inches be ideal length?
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  #14  
Unread 01-18-2010, 03:40 PM
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Re: 25-06 vs 25-06AI

Would this be sorta like a 25 Gibb's?
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