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7mm/375 Ruger Project 7LRM

 
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  #1  
Old 03-31-2011, 10:51 AM
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Join Date: Aug 2010
Location: Reno Nevada
Posts: 191
7mm/375 Ruger Project 7LRM

Living Reno Nevada has some great aspects, one of which is Safari Club, Rocky Mtn Sheep, and Elk foundation all come here for their annual show.
I had the opportunit to spend a great deal of time with G7 at some of these, and low and behold I am now the proud owner of one of their LR barrelled actions in 7LRM AKA 7 MM 375 Ruger.
I'm still a few weeks away from shooting, but I am looking for anyone with loading experience, or suggestions.
I want to shoot Bergers, 168VLDs most likely. The 7 LRM is very similiar to the 7 mag, and I do have some basic places to start, thanks to Mike and Aaron, but anything I can do to put myself ahead of the curve would be appreciated.

I'm hoping for 3200 fps with the 168 vld
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  #2  
Old 03-31-2011, 11:39 AM
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Join Date: Mar 2011
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Re: 7mm/375 Ruger Project 7LRM

Do you have a reloading manual?? That is the best place to start out at. Get some numbers from the book on where to start. You'll be able to choose a powder or two from some of these numbers the book is giving you. You'll need a chrono if you are set with that number because the book will give you an idea but it's never right on the money. Seating depth will also help you get a faster fps but will also help with accuracy.

It's going to take time to get the load you want but if you're willing to spend the time and effort you will be successful.

Good luck!
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  #3  
Old 03-31-2011, 11:46 AM
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Join Date: Aug 2010
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Re: 7mm/375 Ruger Project 7LRM

Thanks
Have all of that and more. Anyone have any real experience with this wildcat?
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  #4  
Old 03-31-2011, 12:25 PM
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Join Date: Aug 2009
Location: North of Eden-South of Heaven, Wy.
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Re: 7mm/375 Ruger Project 7LRM

You can email berger and they will give you a load for a picticular bullet. They are in the process of building a manual, don't know when it will be ready.
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  #5  
Old 03-31-2011, 01:29 PM
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Join Date: Jan 2006
Location: Nebraska
Posts: 507
Re: 7mm/375 Ruger Project 7LRM

Unless they pushed the shoulder back a lot it should be closer to the 7mm STW than the 7mm Rem Mag. Do you know the full/overflow water capacity of the case?

James
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  #6  
Old 03-31-2011, 01:35 PM
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Join Date: Jun 2010
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Re: 7mm/375 Ruger Project 7LRM

This cartrige is virtually identical in case capacity to a 7mm dakota. So you could start there. Didn't gunwerks give you ammo for this? If so just pull a bullet and weigh the charge. They should tell you what powder there using. What loads did they tell you to start with?
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  #7  
Old 03-31-2011, 04:01 PM
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Join Date: May 2008
Location: South of Canada and North of Wyoming
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Re: 7mm/375 Ruger Project 7LRM

Yes, the 7-375 Ruger will be very close to the 7 Dakota. Dakota advertises 3200 fps for a 160 gr bullet out of a 25" barrel. I think the 375 Ruger case might be a good candidate for good performance with RL17, but RL17 might be a little fast for that volume vs cal? I think I would be looking at powders like H1000 and Retumbo if RL17 doesn't work well. You might try calling Dakota Arms and getting some load data from them. The cases are similar in shape and volume.

-Mark
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