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Old 08-19-2004, 04:01 AM   #1
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Accuracy - .308 vs 7mm Mag

I was telling a coworker how I would like to get a bolt rifle in .308, something like the Remington 700 BDL with the bull barrel. I wanted to use it for target shooting. I have an M1A and I could use the loads for both rifles. My coworker said I should get a 7mm Mag because they are more accurate. I reminded him that .308 is the most popular cartridge for shooting competition, outside of the .223 that is. I also reminded him that our military forces use bolt action rifles in .308 for sniper operations. I have never heard of the 7mm being used like this. I don't hunt, I just target shoot. We argued about what is the most accurate cartridge. I don't have a bolt gun, but I offered to shoot against him with my National Match M1A.

What are your thoughts on this?
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Old 08-19-2004, 04:20 AM   #2
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All guns can be made to shoot accurately. It just depends on how much you want to spend for it. Hand loading also opens up a whole new ball game as does factory loaded match ammo (I don't belive 7 mag has factory loaded match ammo). Personaly I have 2 308s and a 7mag. All three shoot MOA (yes, I hand load and shoot match thru the 308s). If your just buying a target rifle the 308 is probably your best bet. There is more room to play so to speak with loads and you'll be able to shoot more with less recoil. Don't over look the 223 for target shooting. It's a bunch cheaper and little if not any recoil. You could probably shoot 10xs the amount of 223 over the 7mag or 308 before feeling sore. It's your money so buy what you want. Hope this helps.
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Old 08-19-2004, 07:42 AM   #3
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if economics enter into it at all, get the 308- the magnums go through powder like water- typically 70 grains a throw, which means you only get 100 rounds out of a pound- brass and primers cost more as well- then there's the recoil - the 308 is nice and mild and you can shoot all day
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Old 08-19-2004, 08:39 AM   #4
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The .308 round is inherently more accurate than the 7mm Mag. Shorter, fatter rounds are nine times out of ten more accurate than a longer round such as the 7mm. The PPC rounds are the shortest and fattest, and they are the staples of benchrest competition. Perhaps it has something to do with burn rate vs. powder column i.e. more of the powder is burning at once instead of having to burn through from back to front? I don't know.
Now that's not to say that this certain 7mm rifle is less accurate than that .308 rifle. The rifle it is being shot out of has more to do with accuracy than the round being shot.
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Old 08-19-2004, 08:49 AM   #5
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I would think that the barrel life of the 7 mag would be much less than that of the 308. The 308 should retain its level of accuracy longer.
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Old 08-19-2004, 04:53 PM   #6
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Just a point of interest for the co-worker that has been there and done that . The .308 spent considerable time in the circles of benchrest competiters , the 7 mag, may have been there as an experiment . But if it was more accurate , the bench guys would still be on it .

Jack
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Old 08-19-2004, 06:02 PM   #7
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Tell your buddy at work that no one uses the 7 mm Remington Magnum for any kind of highpower rifle competition.

Not for conventional highpower, not for NRA long range, not for benchrest, not for ISSF 300 meter 3 position.

I would also ask bubba what his depth of target shooting experience is, and would he care to demonstrate his claims.

I bet he clams up right quick.
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Old 08-20-2004, 04:10 AM   #8
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Thanks for all of your comments. The things you had to say reinforced what I already believed. When I get a bolt action rifle I will go with the .308. I would like to have the Remington 700BDL with the bull barrel.

I have never heard of a 7mm Mag being used in competition anywhere, but the .308s are always out there. The military still uses the .308 for their sniper rifles. That should tell you something.
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Old 08-20-2004, 05:01 AM   #9
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Punching targets: .308
Punching Bambi: 7mm REM

Although Bambi is still scared of my 30-06, and I heard Bubba (several times) at the remote hardware store 30 miles from your closes gun shop or wally mart say:

"Boy, we just don't have any of that milly-meeeter stuff around here!"

.308... bigger holes, more round development, more loading data, more bullet variety......

.7mm REM - milly-meeeter...........
JFYI I have a Milly-meeeter thing that shoots 1/4' groups (100yds) but it isn't my favorite or my best... Just something I needed to have...

Good luck!!

Gerry
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Old 08-20-2004, 06:08 AM   #10
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1/4' = 3 inches 1/4" = .25 inches
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Old 08-20-2004, 06:46 AM   #11
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The 308 Winchester will center punch Bambi at any sane distance (inside of 400 yards for me).

Those who claim a Magnum lets them get away with not doping the wind or range are gunshop commandos that have probably never shot beyond 100 yards and certainly never beyond 200.
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Old 08-20-2004, 07:12 AM   #12
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slightly off topic, i have a 338 win mag in a bar that eats powder 70 grains at a time, uses 250 grain bullts and kicks about 3x as hard as an o6- even with the muzzle brake and a recoil pad- it spends 95% of the time in the safe- my 308s or 7.62s are almost always out every weekend- i have 4 m14types, 1 lever and 1 semi-auto remy- no bolts on accout of i'm a lefty
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Old 08-20-2004, 01:20 PM   #13
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oops..... --------- " --------------

How about .25MOA.... (ok Ok I know an MOA is 1.047")

hahahahah

Thanks for the correction....

Gerry
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Old 08-20-2004, 01:55 PM   #14
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M14Jeff,I would suggest going with the .308.Like you said,you already have an M1A,so you are keeping things simple with keeping ammo on hand.And besides,if you ever do decide to hunt anything in North America the .308 is an EXCELENT round.The guy probably doesnt collect any other type of firearm than hunting guns,so he doesnt appreciate keeping ammo stock as simple as possible.
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Old 08-20-2004, 06:19 PM   #15
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I have never been impressed with the 7mm Mag. The 7mm was the change over round for guys wanting to feel they had something over the standard 06 and 270 guys. Guys that didn't want to learn ballistics as well as true shootrs. I am a magnum fan and love hunting with my .300 Winny. I do quite a bit of hillside to hillside hunting and just appreciate the flatter trajectory and extra knockdown the .300 gives. However for just target shooting the .308 is great. It's not bad for hunting either. My Waffen Frankonia 98er with 125 grain Nosler Ballistic Tips is a fine deer rifle.
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