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7MM wildcats?

 
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  #1  
Old 02-08-2010, 10:21 AM
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7MM wildcats?

Is anyone aware of any 7mm wildcat cartridge that will push a 160 to 3200 fps with a 2.50" case? (other than the 7mm Dakota)

I would like to keep the barrel at 26" max.
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Old 02-08-2010, 10:26 AM
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Re: 7MM wildcats?

Quote:
Originally Posted by cornstalker View Post
Is anyone aware of any 7mm wildcat cartridge that will push a 160 to 3200 fps with a 2.50" case? (other than the 7mm Dakota)

I would like to keep the barrel at 26" max.
You could take the 338 Lapua case and shorten it
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Old 02-08-2010, 10:49 AM
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Re: 7MM wildcats?

Quote:
Originally Posted by cornstalker View Post
Is anyone aware of any 7mm wildcat cartridge that will push a 160 to 3200 fps with a 2.50" case? (other than the 7mm Dakota)

I would like to keep the barrel at 26" max.
Not a 2.500 case, but 2.620. I am playing with a 7mm-300 win. I have seen over 3200 with 180 Bergers. But they were showing a bit of crater on the primer. I backed them down and they were happier around 3100 and change. So I would think a 165 could get real close to 3200 in it. I do have a 28" barrel though.

Jeff
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Old 02-08-2010, 10:57 AM
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Re: 7MM wildcats?

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Originally Posted by Broz View Post
Not a 2.500 case, but 2.620. I am playing with a 7mm-300 win. I have seen over 3200 with 180 Bergers. But they were showing a bit of crater on the primer. I backed them down and they were happier around 3100 and change. So I would think a 165 could get real close to 3200 in it. I do have a 28" barrel though.

Jeff
That sure sounds like a lot less brain damage than cutting down and forming cases. I like the idea of the Lapua case, but I wonder how well it would feed in my action.
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Old 02-08-2010, 11:07 AM
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Re: 7MM wildcats?

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Originally Posted by cornstalker View Post
That sure sounds like a lot less brain damage than cutting down and forming cases.
I have only been working with this rifle a few weeks. I need to get a different bushing for my 300 dies and more bullets. I also had a scope go bad and have to start over with load development. All I can say for now is, I like it so far. The velocities are much higher than I anticipated and I am allowing about 50 FPS that my chrony is usually high. Looks like at this point I will be over 3100 with 180 from a 9 twist 28" Hart barrel using WW brass. That prediction is from my ups on exbal at 1000 yards and the predicted exbal velocity, from the 1000 yard testing I did with it.

And Yes, necking the brass is easy, especially with redding bushing dies for a 300 win.

Jeff
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Old 02-08-2010, 11:17 AM
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Re: 7MM wildcats?

Cool post, but why try to reinvent the wheel when the 7mm Dakota is an easy choice?
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Old 02-08-2010, 11:29 AM
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Re: 7MM wildcats?

You might consider a 7mm-375 Ruger. It has almost the same capacity as the Dakota and should get you to 3200 fps with a 160 bullet. The brass (375 Ruger) is made by Hornady and is much cheaper than the Dakota brass. You could neck it down with a bushing die and a series of bushings.

-Mark
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