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.300 WM or 7MM Rem mag

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Old 11-18-2009, 12:33 PM
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Join Date: Jun 2007
Posts: 1,515
.300 WM or 7MM Rem mag

I have a friend that is getting hooked on long range hunting. He saw a 300 yard shot take my deer (sorry guys, It was my shortest shot on deer in the last 5 years.) and he was there when my bro connected on a 540 yd elk (although the.338 250 gr SGK performed poorly in securing the animal with 4 hits. First of which hit below the spine by an inch and only clipped the lung. A shot from a .270 actually anchored it.)

Now he wants a long range gun.

He will be killing Mule deer and elk (maybe a moose, maybe a bear, but the focus is elk and mulies) He will often have shots from 0-600 yards but he wants to be able to use the gun for 1000 yard elk as he works up to that. Te longer shots on both deer and elk will be more common as as skills and technique develop. He is looking hard at the 7mm mag chambering but I threw a bunch of numbers at him and asked him to consider a .300 win mag. It will be a new factory rifle and I will do all the basic work on it for him i.e. glass bed and free float and bbl break in and load development and trigger work (where applicable). There may be some minor gunsmithing at some point if needed.

My question is- Of the 2 options which would you pick and why? I'm looking for some good "'ol school" advice. I know as well as anybody that shooting in theory is not the same as shootin on fur.

I did search for info already and spent the last hour combing Darryl Cassels posts for the answer I was looking for. I figured just asking again would be a bit more efficient.

Thanks guys.
GRAVITY. It's not just a good idea. It's the LAW!

Last edited by 4ked Horn; 11-18-2009 at 06:55 PM. Reason: To clarify the options and usage.
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Old 11-18-2009, 02:22 PM
Gold Member
Join Date: Aug 2007
Location: Canterbury, New Zealand
Posts: 675
Re: .300 WM or 7MM Rem mag

If it is only the odd shot at an elk at 1000 yd then I would go with the 7mm mag, especially with the 0-600 yd shots at deer.
If he is really serious about 1000 yd elk then a 338 RUM would be excellent as a factory gun, otherwise the 300 RUM with 200 accubonds wouldn't be far wrong.

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Old 11-18-2009, 05:12 PM
Silver Member
Join Date: Oct 2009
Location: USA
Posts: 306
Re: .300 WM or 7MM Rem mag

Shot placement is crucial and more energy will *never, ever* replace correct shot placement. Otherwise and all things being equal, more power!!!

OK, so right outta the gate, i admit i've never killed an elk - deer yes, elk no. However, i do have a 7mm RM and it's a nice cartridge - shoots flat and hits fairly hard (my longest shot to date on game with it is 520 +/- and it did the trick).

Additionally, deer go *maybe* 300-350lbs - maybe. An elk is, as i understand it, a different critter altogether. Maybe something that is more able to smash through heavy bone such as a .300 Win. is better medicine (bullet choice has ALOT to do with this BTW). To wit, the .308 caliber simply has more projectile choices, though both are easy to load for or find store-bought ammo if thats the plan.

I don't know how much more, if any, barrel life he would get with the .300 Win, but i believe it will be more than with a 7mm Rem (depending loads used of course).

Both cartridges can be very accurate - i wouldn't say one is more so than the other in that - depends on too many things...

Recoil is manageable in both, though the 7mm Rem has less - again, specific rifle has a lot to do with this.

Of the 2 suggested rounds, i'd choose the .300 Win.

Later on for 1,000 yds+ engagements on elk, the .338 caliber seems the way to go - it's what many here choose with great results.
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Old 11-18-2009, 08:16 PM
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Join Date: Nov 2008
Posts: 75
Re: .300 WM or 7MM Rem mag

I have been going through this very same decision making process over the last few weeks. I have been running a 7mm RM for a while and am starting to move over into shoots between 600-800 on deer. For me, it came down to more energy down range and that was the 300WM over the 7mm. I decided that if I got to the point of being able to take elk or larger game at these and longer distances, it was time to step up to the 338 cartridges.
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Old 11-18-2009, 08:58 PM
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Join Date: Nov 2008
Location: Central Pennsylvania
Posts: 4,034
Re: .300 WM or 7MM Rem mag

I'm working on an article that hopefully will help with this decision.

Matthew 7:13-14
"Enter through the narrow gate. For wide is the gate and broad is the road that leads to destruction, and many enter through it. [14] But small is the gate and narrow the road that leads to life, and only a few find it.

If you find your self in a fair fight, your tactics suck!- Marine 1st Sergeant Jim Ryfinger

Friends don't let friends develop canonitis!-chucknbach

arguing over the internet is like the special Olympics....even if you win, you are still...special!
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Old 11-18-2009, 09:43 PM
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Join Date: Nov 2009
Posts: 58
Re: .300 WM or 7MM Rem mag

If i were purchasing a longrange rifle, i would have a few choices, but for over the counter stuff, .300 RUM wins. I have all the above plus a few and everytime i go hunting where i need a distance of over 500 i always pick up my .300 RUM. Energy and a well placed shot means alot on a 2000lb animal. If you do alot of elk hunting i might even go with a .338-.378. Just my two cents worth....Good luck
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Old 11-18-2009, 09:44 PM
Bronze Member
Join Date: Nov 2009
Posts: 58
Re: .300 WM or 7MM Rem mag

Well, 1200lb animal.....
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