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Custom Gun

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Unread 11-15-2006, 06:12 PM
Gold Member
Join Date: Sep 2005
Posts: 748
Re: Custom Gun

Hi whay doesnt he use the Ultra MAg case it will fit in his existing action. The cases are a lot cheeper and also he already has the platform. I would not go with a WBY as the cases are made from Norma and are relatively soft so you can not reload them to many times i would look at a 300 Ultra or 338-300 Ultra and use his existing action but is if he has his hart set on the big WBY case he will need to find another action to make it on. Yes he can use a Rem action but would be better off with a custom left hand action.

Cheers Bill
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Unread 11-15-2006, 06:19 PM
Platinum Member
Join Date: Dec 2001
Location: Long Island, New York
Posts: 2,422
Re: Custom Gun

Some smiths will open up Rem 700 bolts to fit the 338 Lapua case (or 378 WBY) while others warn against this practice. It's a bit iffy for me and I would much rather play it safe by using a larger diameter action which was built for this size case. Just my opinion though.

The 300 Tomohawk is basically the 300 RUM in an improved configuration, less body taper and a shoulder angle change, resulting in more case capacity. Similar to other "AI" cases.

Personally, I feel that the RUM case is already beyond the normal practical limit in case capacity for the .308 bore. Larger cases use considerably more powder for nominally smaller gains in velocity. You can probably burn the throat out of 30-378Wby barrel by the time you find a good load. [img]/ubbthreads/images/graemlins/grin.gif[/img]
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Unread 11-16-2006, 11:31 AM
Silver Member
Join Date: Nov 2005
Location: Texas
Posts: 226
Re: Custom Gun

I too like the tikka rifles. If he wants something more I think the 300wby is the ticket make sure the smith keeps the free bore diamenter down. I wouldn't suggest the 30-378 type rounds unless you want to rebarrel every 800-1000 or so. I used to have a 30-378 and it was fast and mean and nasty and damn fun to shoot but for a small improvement in velocity it take a lot of powder and it is very hard on barrels. The 300wby isn't nearly as hard on barrels and gives you more than the 300WM which I think is a fine artridge itself. I have considered this one reasently and I have decided to go with the 300wby on my next build. The problem that I am courious about is the Tikka has a drop mag. I'm not sure a longer case will fit. you might want to check this issue out as well.

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