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Have a little Problem

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Old 04-12-2010, 01:31 PM
Platinum Member
Join Date: May 2008
Location: South of Canada and North of Wyoming
Posts: 5,954
Re: Have a little Problem

I think the 375 Ruger case would make a great wildcat case for a 308 or 7mm. I've though a lot about myself.

As for the rifle, I second the idea of selling one of your rifles and getting another more suitable platform for a LR rifle. My first choice would be a Weatherby Vanguard or Howa (Howa makes the Vanguard action), sell the stock and barrel and replace with a B&C Medalist stock with full aluminum bedding block, or another quality stock (unles you get the Sub Moa Vanguard which comes with a good stock) and get a good custon barrel. That is what I plan to do for my next rifle.

Have fun with your project and welcome to LRH.

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Old 04-12-2010, 03:07 PM
Gold Member
Join Date: Jan 2006
Location: Nebraska
Posts: 507
Re: Have a little Problem

The one I currently have chambered is my 1000yd heavy gun, it has the shoulder pushed back quite a bit to get a .375" long neck, water capacity is 92.8gr. The 93.64gr for the cartridge drawing you show seems to me underestimated. I have not pushed the envelope on mine at all, my target velocity is below 2950 with 208 Amax bullets and it very easlily does that. According to Quickload I should be able to push the 208 and 210s to around 3200. I was surprised that Quickload nailed my starting loads so I would guess that it is close on the max loads. For 240 smk bullets QL shows over 2900 fps. The highest vel I have recorded with the 208s is 3020 with I think 80gr H1000.
The other reamer I have is closer to the one you posted. The gun I am chambering with that reamer will be a hunting rifle, whenever I get around to it. Both my reamers cut a .338 neck so necks have to be turned. My loaded rounds after turning measure .334. On the last lot of brass I got that is just where they clean up. The first brass I had wouldn't have needed turning if not for the chamber neck, they were very consistent.

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Old 04-12-2010, 05:30 PM
Platinum Member
Join Date: Feb 2009
Posts: 3,538
Re: Have a little Problem

Woods, thanks for responding. You mentioned lines so I'm assuming as in stained or something but not scatches-and that's good...no scratches.
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Old 04-12-2010, 10:25 PM
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Join Date: Jun 2006
Location: Shangri-La
Posts: 926
Re: Have a little Problem

James, thanks for that info. The chamber I am having reamed has a .341" neck so the reamer won't change that and I won't have to do anything but clean the necks up. The gun is a Beretta Mato 300 win mag so the barrel is a Lothar Walthar and worth salvaging.

What dies are you using?
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Old 04-13-2010, 08:44 AM
Gold Member
Join Date: Jan 2006
Location: Nebraska
Posts: 507
Re: Have a little Problem

When I ordered the chamber reamer I also ordered a resize reamer to make my own dies. For resizing a made a bushing die so I could control neck tension. Dimensions are close enough that I should be able to use the same dies for both ctgs I just won't get as far down on the base with the longer ctg. For the seating die I made a bushing for my 30-378 RCBS Gold medal die. A 300 RCM seating die would work out of the box also.
For my form dies I push the shoulder back with a die that leaves the neck around .373 ID then I turn the brass then neck down to .335 ID then run them through the 30x375 bushing die and turn necks again. Fireform then anneal.

Another fellow who posts on this forum was using a FL 375 Ruger die to body size and a 338 RCM FL die for neck and shoulder bump on his 338x375 Ruger, last I knew it was working.

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