Precesion Rifle- is 308 or 300 win mag more accurate

[cowboyup]

Asking for your opnion on a PBRifle set up.

Is 300 Win as accurate as a 308?

Thanks

[dominic]

Generally the 300 win mag is the more accurate.

[lazuris]

They are the same there is no accuracy difference. The difference is the distance that the 300 can go versus the 308. If you are shooting 1000yds or less get the 308. Cheaper and eaiser on you. The 300 shoots flatter, less come ups than the 308, but thats its. However after 1000yds the flatter shooting 300 will give you more retained energy and velocity thus allowing further shots to the 1400-1500yd range depending on conditions. Also the 300 is able to buck the wind better than the 308 due to the higher velocity and heavier bulltes it can handle.

Other than that to say that the 300 is more accurate then the 308 is incorrect.

[Dangerous]

1400 yards is really far... damn thats crazy.

[Connor P Price]

They are the same there is no accuracy difference. The difference is the distance that the 300 can go versus the 308. If you are shooting 1000yds or less get the 308. Cheaper and eaiser on you. The 300 shoots flatter, less come ups than the 308, but thats its. However after 1000yds the flatter shooting 300 will give you more retained energy and velocity thus allowing further shots to the 1400-1500yd range depending on conditions. Also the 300 is able to buck the wind better than the 308 due to the higher velocity and heavier bulltes it can handle.

Other than that to say that the 300 is more accurate then the 308 is incorrect.

^ Nailed it.

[Bucky G]

my buddy takes his 300 win mag "varmint rifle" when we go jack rabbit shooting

I never get a shot, he has the eyes of an eagle :p

[9mmepiphany]

however if you'd like better accuracy at further distances...and have the added benefit of less recoil...you might look at the .260 Rem

[Sniper3142]

They are the same there is no accuracy difference. The difference is the distance that the 300 can go versus the 308. If you are shooting 1000yds or less get the 308. Cheaper and eaiser on you. The 300 shoots flatter, less come ups than the 308, but thats its. However after 1000yds the flatter shooting 300 will give you more retained energy and velocity thus allowing further shots to the 1400-1500yd range depending on conditions. Also the 300 is able to buck the wind better than the 308 due to the higher velocity and heavier bulltes it can handle.

Other than that to say that the 300 is more accurate then the 308 is incorrect.


Perfectly Correct Answer

[lazuris]

I just want to add that the 308 can go well past the 1000yd mark. 2 weeks ago in my undisclosed shooting spot I shot steel @ 1215yds, measured by laser range finder with my 308. Target measured 15"x15" with solid hits. I needed 42.25 minutes of elevation. load was 44.6g varget. 175g nolser cc, which I like more than the SMK's. Laupa fireformed brass and 210m's. MV 2725 @ 2250' elevation. Now the wind was giving me some trouble light wind 3-5mph from the 3:00 position. Had I had my 300 my wind call would have been much eaiser but to be honest the 300 hurts after awhile. :(

[bwiese]

It's all in the wording.

Let's assume equally perfect guns to start with.

300WinMag is likely to be more accurate at longer ranges (near 1K yds, say) than 308 because that's when the 308 "loses much of its legs". 300WinMag still has legs out there.

But for shorter ranges remember that a 308 is a shorter cartridge - which makes for more consistent burn. You're gonna have more varied ignition in a longer-action cartridge, by contrast. While an inidividual round of 300WinMag may be great, there will be more dispersion due to a bigger/longer case and more variation in ignition.

And 308WinMag is a 'belted magnum' with less control of headspace. Lotsa folks HATE belted magnums for that reason.

300WinMag is also a real barrel burner with significant chamber erosion. A 308 barrel will last a helluva lot longer (i.e, timespan for maintained accuracy with all other factors constant) than a 300WinMag will. I keep hearing 300WinMag barrels really tire out after a few hundred rounds.

Remember that of all the loadings we know about (i.e, accuracy, repeatability, etc.) the 308 is up at the top.

If you don't have a 30Cal rifle, get a 308.
If you are shooting under 750, get a 308.
If you want cheaper, more consistent ammo, get a 308.
If you already have a top-notch 308 and can hit well at long distances, then step up to a 300WinMag for a bit more reach, "just cuz".

[sevensix2x51]

id say that the .308 is more accurate, due solely to the fact that your can shoot 3-4 cartridges of .308, as opposed to 1 .300wm, for the same dollar value... therefore you are much better versed on the handling of the cartridge. i had a 300wm for 4 years, and shot ~25 rd through it. during that time, i fired a few thousand .308 rounds(conservative estimate)...

[Hoop]

The guy who said that the WM is better at long ranges is the right answer. All you're really doing is pushing the same bullet faster when it comes down to it.

[swerv512]

If you don't have a 30Cal rifle, get a 308.
If you are shooting under 750, get a 308.
If you want cheaper, more consistent ammo, get a 308.
If you already have a top-notch 308 and can hit well at long distances, then step up to a 300WinMag for a bit more reach, "just cuz".

:iagree:
couldnt have said...um... typed it better myself

[Tonk]

Now for most shooters or hunters, the .308 is going to be more accurate. The reason being is that the .300 Winchester Magnum develops almost twice the "recoil" (18-lbs for the .308 & 30-lbs for the .300 Win mag) to the shoulder after you pull that trigger. Shooting a .300 Win mag from the bench is not a tasty cup of tea mates.;) :eek:

[popeye4]

Have you considered something like the 6.5-284? I don't think the long range competitors use .300 Win Mag much any more. Palma shooters have to use .308 Win.

The magnum burns significantly more powder for that extra 400 or so fps. Typical .308 powder charges are in the mid 40 grain range, the Win Mag runs mid-70s. That results in significantly higher recoil.

[M1A Rifleman]

Your question has many variables. At distant ranges, it may be the 300 since it has the energy and velocity to keep the bullet stable and on target. At shorter range, like 100yd, the 308 should be the leader. Historically, it is one of the cartridges with inherent accuracy. I have had both a 308 and 300 in identical rifles. I could never get the 300 to perform as well.

[cowboyup]

Your question has many variables. At distant ranges, it may be the 300 since it has the energy and velocity to keep the bullet stable and on target. At shorter range, like 100yd, the 308 should be the leader. Historically, it is one of the cartridges with inherent accuracy. I have had both a 308 and 300 in identical rifles. I could never get the 300 to perform as well.

Thank you everyone........interesting. So, same rifles and the 08 outshot the 300....

How is the 300 recoil?

[cowboyup]

Have you considered something like the 6.5-284? I don't think the long range competitors use .300 Win Mag much any more. Palma shooters have to use .308 Win.

The magnum burns significantly more powder for that extra 400 or so fps. Typical .308 powder charges are in the mid 40 grain range, the Win Mag runs mid-70s. That results in significantly higher recoil.

Yes I'am now......like to looks of that alot. have you shot the 6.5/284

[BigBamBoo]

............

[MicronuT]

http://www.angelfire.com/art/enchanter/mag7.html

this site, shows a 7mm rem mag to have pretty high BC vs 300 and 308's

7mm rem mag comes out to .485 vs .483 to the 300

[ar15barrels]

to be honest the 300 hurts after awhile. :(

Yep.
Getting a 300 win mag as a first precision rifle is the quickest way to ensure someone does not stay interested in the sport.
One of the guys we shoot with got one because of the paper ballistics.
It recoils so much (killed a scope) that he had to put a JP recoil eliminator on it to make it bearable to shoot.
Of couse that made it un-bearable to everyone else around and that made him unpopular with everyone on the firing line at matches.
After shooting it a few hundred rounds, he got sick of it and built a 260 instead.

[Fjold]

The difference in accuracy between a 300WM and a 308 will vary more between individual guns than in accuracy differences between cartridges.

[9mmepiphany]

this site, shows a 7mm rem mag to have pretty high BC vs 300 and 308's

7mm rem mag comes out to .485 vs .483 to the 300

the 6.5mm is even better

from the Speer manual:
.264" (6.5mm) 140 grain, BC .496

[ar15barrels]

the 6.5mm is even better

from the Speer manual:
.264" (6.5mm) 140 grain, BC .496

I'm shooting 107gr matchkings at 3100fps from my 243 with a G1 BC of 0.527.
That beats the heck out of any 0.496 BC bullets at 2600 to 3000fps.

[wildcard]

Yep.
Getting a 300 win mag as a first precision rifle is the quickest way to ensure someone does not stay interested in the sport.
One of the guys we shoot with got one because of the paper ballistics.
It recoils so much (killed a scope) that he had to put a JP recoil eliminator on it to make it bearable to shoot.
Of couse that made it un-bearable to everyone else around and that made him unpopular with everyone on the firing line at matches.
After shooting it a few hundred rounds, he got sick of it and built a 260 instead.

You were just waiting for me to see this huh?

It actually killed one scope twice (IOR SH FFP) and and also a second scope (IOR 10X). Always had the JP Recoil Eliminator on it.

The 300 Win Mag is a lot of fun to shoot and will outshoot a .308 any day.. initially. The problem is that the barrel heats up fast meaning your groups will open up and your barrel will burn out.

It doesn't really make you unpopular at the matches.. infamous maybe :)

If you want to have fun, make a big boom, and hunt any North American game.. 300 Win Mag is the way to go.

If you want the same ballistics in a short action without the pitfalls and not waste 70 grains of powder every time you squeeze the trigger.. 260 Remington is your answer.

Want long barrel life or don't reload.. 308 Winchester is the way to go.

[ar15barrels]

You were just waiting for me to see this huh?

I figured you would find it.
I didn't know you killed the 10x.
I thought that one was bulletproof!

[popeye4]

I'm shooting 107gr matchkings at 3100fps from my 243 with a G1 BC of 0.527.
That beats the heck out of any 0.496 BC bullets at 2600 to 3000fps.

Randall,

Have you played around with the 6xc at all?

http://www.davidtubb.com/6mmxc.html

[ar15barrels]

Randall,

Have you played around with the 6xc at all?

http://www.davidtubb.com/6mmxc.html

No.

[Bug Splat]

I'm shooting my 6.5-284 with Berger 140gr hunting VLD's and they have a .595BC. Recoil is tame and accuracy is insane. 0.47" at 200 yards was the last group I shot. I need to get back out there and see what she can do at longer ranges.

[cowboyup]

I'm shooting my 6.5-284 with Berger 140gr hunting VLD's and they have a .595BC. Recoil is tame and accuracy is insane. 0.47" at 200 yards was the last group I shot. I need to get back out there and see what she can do at longer ranges.


Thanks Everyone for the comments and advice good stuff.......

[Mesa Defense]

really depends on what game you want to play...

[killshot44]

Good Knowledge.

[Jonathan Doe]

300 WM is belted cartridge. The headspace is measured from the face of the head to the end of the belt. I have seen some cartridge cases with inconsistent dimension. Consistency is the key for accuracy. I always preferred non belted cartridges. 308 is inherently accurate cartridge per the Sierra manual. With 175 or 180 grain Match King bullets, you can shoot accurately to 1,000 yards without problem. Palma shooters shoot 155 grain bullets at 1,000 yards.

For long range shooting beyond 1,000 yards, I would choose 338 Lapua Magnum.

[264charlie]

After seeing what a .243 can do. I would look at anything else for a match rifle.

Found on 6mmbr.com

.243 Win For Tactical Comps
We asked GA Precision's George Gardner why he chose .243 Winchester for his Tactical Comp Gun. He replied, "Why would I run anything else? Think about it. I'm sending a .585 BC 115 at 3150 fps--that'll shoot inside the 6XC and .260 Rem with ease. I'm pretty sure I have found the Holy Grail of Comp Rifles. There are no brass issues like you can get forming .260 brass. I don't have to worry about doughnuts, reaming necks--none of that. And the choice in brass is great too--run Lapua if you want max reloads and great accuracy. Run Winchester if you're on a budget, and so you won't cry if you lose some cases in a match. I can get 10-round mags, and feeding is 100% reliable, since the case is identical to a .308 except for the neck. Accuracy-wise, I don't think I'm giving up anything to the .260 Rem or the 6XC.