7mm Rem Mag vs .300 Win Mag

[.300 Weatherby Mag]

I'm not saying you can't build an extremely accurate rifle using a belted cartridge.. But if I were looking to build a rifle with accuracy as the number one priority I would chamber it in something without a belt..

[Ninask]

I'm not saying you can't build an extremely accurate rifle using a belted cartridge.. But if I were looking to build a rifle with accuracy as the number one priority I would chamber it in something without a belt..

What is the issue with belted cases and accuracy?
N

[choprzrul]

Is the Hornady 208 grain A-Max available for the 7mm? If not, what 7mm bullet matches the sectional density and b.c. ?

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[Rider1k]

I'll take my 7mag any day on any game on this continent without hesitation.

[buffybuster]

Enough mis-information in this thread to write several books......

To the OP: Before you can decide what cartridge is most suitable for YOUR intended purpose, you have to decide what that intended purpose is......

Everyone has a different opinion, because everyone has differing priorities, experiences and bias's.

If you can be more specific on your intended use, rifle shooting experience, budget, whether you reload, if so reloading experience and how much time you can commit, then a more constructive recommendation can be presented.

[Model94Guy]

Google Chuck Hawks: All round cartridges, since the passing of Jack Conner this guy is as knowledgeable as anyone on rifles. IMO

[spamsucker]

7mag is a lot of gun for a target gun. I use one and love it. Kicks a bit less than a 300wm. Barrel life is not very long, loading belted magnums for target work can be a PITA. 7mag burns a lot of powder, so does .300wm. There are other chamberings out there that'll get you to 1000m supersonic and not need so much blast, powder, barrel wear, recoil. Look up 6.5 Creedmore. I'm thinking of building a rifle in that cal just so my target shooting doesn't burn so much powder.

[RobG]

A standard 7 Rem mag shooting a 180 Berger Hybrid over a dose of Retumbo should achieve all you desire. Have your smith chamber it to headspace off the shoulder instead of the belt. With a 28" barrel you will easily hit 3k fps. It will also do it with less recoil than a .300 shooting a 215 or 230. Barrel life isn't great on either; I shot mine out in about 1150 rounds. If you really like the .284 caliber and want better barrel life, less recoil, and less powder, give the .284 Winchester or .280 Remington a look. Both will get you to 1200 yds with ease albeit less punch on game.

[Fjold]

I don't see enough information on what you want to do with the gun. I don't know a hunter that takes the four hundred or over shot and very few that take the 300 yard shot.
Building for competition there are a lot of good places to get the latest and greatest information on who is winning and what are they shooting.

Three basic uses hunting, punching paper, work related. If I am missing what you want please straighten me out I missed it.

Me.

What is the issue with belted cases and accuracy?
N

It comes from people not knowing how to set their dies up correctly. The belted magnums were built to headspace off the belt so the shoulder of the case is often undersized for the shoulderchamber in both diameter and length. If you adjust your sizing die to correctly headspace on the shoulder you can be as accurate as any non belted cartridge of similar shape.

[LeadSlinger585]

I'm leaning towards the 7mm. Reasons: I reload so ammo costs aren't as much a concern; the .300 would be using different weight bullets then my .308 so I wouldn't be economizing there; checking around there's plenty of old 7mms for cheap; and ballistics data seems to favor the 7mm at longer ranges.

I've noticed that too! It seems odd and makes me wonder why I see more 7mm's on the market than non-7mm (in LH Remington 700's).

It comes from people not knowing how to set their dies up correctly. The belted magnums were built to headspace off the belt so the shoulder of the case is often undersized for the shoulder in both diameter and length. If you adjust your sizing die to correctly headspace on the shoulder you can be as accurate as any non belted cartridge of similar shape.

Pretty neat, thanks for sharing. Retaining for future use. Thanks!

[Switchbarrel]

Is the Hornady 208 grain A-Max available for the 7mm? If not, what 7mm bullet matches the sectional density and b.c. ?

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The Berger 7mm 180gr. hybrid beats it.

[sjb269]

How in the world is this thread still going after post #10?

[Pete1979]

I'm a Remington fan but in this case I would suggest you start with a Savage 110 as caliber changes are easier. Start with a 30-06 and get to know your rifle. The belted magnums take a lot of getting used to and are anything but pleasant to shoot long strings with, ask me how I know. With a savage, you can swap the barrels and two bolt heads will cover just about any caliber you want.

[Paradiddle]

There's no way possible that a 100 year old cartridge can meet today's shooting needs. And with what?? A bolt rifle, 19th century technology no less.

While the cartridge may have been designed 100 years ago development of the round has never stopped.

What exactly is "today's shooting needs" anyway.

[Model94Guy]

I thought it strange that a cal buddy with 1911 in his handle was dissing 100 yr. old technology.