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New caliber for first build?

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Unread 08-13-2011, 06:53 AM
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Join Date: Jan 2010
Posts: 879
New caliber for first build?

I own a remington 700 BDL 7mm rem mag. very accurate gun. I want a gun i can hunt with for moose and elk and whitetail at ranges out too 700-800 yards and accurately shoot targets at ranges well out and over 1000. The reason i want 700-800 yards is because where i hunt moose the max shooting is around 600-700 yards and i want to just take it to about 100 yards past that incase of anything at all. Dont want to loose a trophy bull.

I know that loaded properly a 7mm mag can do what i ask for it but im not sure if its really the proper caliber for the job. I do not want a 338. I dont think i will put it to full use. Most of my shooting is between 50-600 yards so i know a 338 isn't needed.

I dont know what caliber will be best for me. I own a 300. wsm and absolutely love it. The only issue is, its a browning a-bolt so i cant do any work to it. It is accurate enough to take the game i want at 600 yards but not any further then that. and if i wanted real precision i cant get that out of it. Its strictly a hunting rifle. I was debating turning it into another 300. wsm. This caliber is more adequate for ranges im talking about and in a long action i can utilize the 190-210 grain bullets. I know there is no point in shooting the short mag if im talking about 190-210 when the 300 win mag does that naturally. the reason im considering it the most is cause i already have everything i need to reload including 100 empty shells 1 fired. The wsm will do everything the win mag will in a long action.

the only other caliber i was considering was the 300. RUM. If i were to step away from the wsm why go to a win mag if just a step past is the RUM. What is everyone's thoughts?
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Unread 08-13-2011, 09:27 AM
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Join Date: Nov 2010
Location: Colorado, Front Range
Posts: 561
Re: New caliber for first build?

I like the idea of a 7mm WSM on a long action. It would allow 180's -200's to be seated long and even maybe into the mag.

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Unread 08-17-2011, 11:57 PM
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Join Date: Sep 2006
Posts: 162
Re: New caliber for first build?

I have a buddy of mine that has a 300 wsm, it didn't like the 180 bergers so we went to the 168's, it shoots 3/8" groups at 100 yards and last year in wyoming he shot a 175 plus muley at 1048 yards and the year before that he shot a whitetail in montana at 850 yrds, he is pushing the 168's at 3160 fps, so I think the 300wsm is plenty I would not go with the 300 rum as you really need about a 34" barrel to burn all that powder, I built my son a 7WSM and we shoot the 180 bergers at 3005 fps I would go with the 7wsm , you have a lot more high bc bullet choices, I built my sons rifle off a howa long action so that we could seat the bullets out and still have them fit in the mag
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Unread 08-18-2011, 09:24 PM
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Join Date: Mar 2002
Location: mi
Posts: 991
Re: New caliber for first build?

The 300 WSM is a good cartridge a step up would be a Dakota in 7mm or 30 any of these will work for what you are looking for.
If you think something is not possible move out of the way so the ones that are doing it can
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Unread 08-18-2011, 10:40 PM
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Join Date: Jan 2011
Posts: 2,206
Re: New caliber for first build?

My vote goes to the 300 roy, ( 300 wby mag ) have someone do a match chamber with only .060-.080" free bore. Yes it only hold 5grns more than the win mag, but typically has about 6 grns more usable powder space and a much better shoulder design than all the others mentioned. In the manuals it only shows a slight advantage over the win mag but they typically use test fire arms with no free bore and only 24" long. I know for a fact that a 300 wby will push a 208 amax over 3200fps with H1000 or retumbo in a 28" barrel, and I also disagree as for the wsm keeping up with the win mag because the wsm is designed to shoot much hotter powders than the win mag to get good velocity in shorter barrels, when you go with a long barrel and powders such as H1000 and Imr 7828 the win mag will hold 100fps+ advantage over the wsm.
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Unread 08-18-2011, 10:54 PM
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Join Date: Jan 2008
Location: Gillette WY
Posts: 917
Re: New caliber for first build?

7mmx300 win mag. everything a 7 ultra will do with less powder.
Remington 700 7mm SAUM Magnum Research Barrel
Savage Target Action 6.5x47 Lapua
Savage Predator Hunter Max1 6.5-284 Norma
Savage Bear Hunter 338 Win Mag
"Gotta Kill It Before You Can Grill It"
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Unread 08-19-2011, 01:58 PM
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Join Date: Apr 2010
Location: Allen, TX
Posts: 2,608
Re: New caliber for first build?

I would leave the 7RM alone, sell the Browning, and buy a customizable rifle (e.g. Savage or Rem) in 300WSM or 300WM.

Have you tried hand loading for your Browning 300 WSM?

-- richard
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