The 6mmBR is widely regarded as one of the most accurate cartridges around , but since mag feeding with it looks iffy at best, what is the most accurate mag fed cartridge? This is just for target shooting only, at 100 - 600 yard max.
Phil
Phil
6mmBR isn't the "most accurate." It has great "ballistic performance" (i.e., low wind drift and drop) for its level of recoil. If precision rifle shooters could get it to feed reliably from a magazine, it would have prolific use.
If you go to the sticky thread, "what the pros use" you'll notice that 6.5CM, 260Rem, 243 Win and 6XC top the list. I've been reading that 6CM is starting to make inroads also. Within these chamberings there are adv/disadv that have been discussed at length. If you reload, it doesn't really matter what you go with.
Do not confuse "ballistic performance" for accuracy. Accuracy is being able to hit the target you're aiming at. Hitting the same point repeatedly is precision.
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If you want good ballistic performance, the tradeoffs are usually high recoil or short barrel life. The cartridges above (e.g., 6.5 CM) provide acceptable barrel life (better than 6mm) and moderate to low recoil for great ballistic performance.
308 Win, for example, gives you great barrel life, has a tremendous selection of match grade ammo and reloading data available, moderate recoil, but is on the lower end of the ballistic performance spectrum.
Get a 223.
Feeds great, highly accurate, low recoil, completely capable at your stated ranges.
I fully recognize the importance of shooting technique, quality barrel, properly aligned scope, quality ammo, etc. Believe me, my practice, advice from other shooters, high end expensive gun components, bedding, tedious scope alignment, Forster Co-Ax press, Sinclair measurement tools, higher end dies, Lapua brass, Bench Rest thoroughness on reloading process and techniques, etc, are ensuring maximum accuracy and precision for whatever round is fired. But, I don't believe there is any denying that some cartridges are inherently more accurate than others and don't believe choice of cartridge is in the realm of an "afterthought". This is not to deny the importance of all else mentioned, but I can't find anyone that with all else being equal, would say the 223 is the equal of a 6mmBR. My AR15 can shoot a 223 in a .25" 5 shot group at 100 yards off a bipod, but want better, the best, that can be achieved at these shorter distances, out of a bolt action mag fed weapon. If the 223 is the #1 caliber for that, then OK.
Phil
You started out really well here and ended with a big flop well almost at least you didn't say your AR can shoot 1/4" all day long. I'm sure you may have lucked out on a 1/4" group once in a while thru your rifle but the 223 is no equal to a 6 BR and thus far the most inherit accurate case would be the PPC cartridge.
I won't take anything away from the AR I have one that's capable of shooting 1/4" also but not off a bipod and not consistently. I also own a 6 BR and I know the 223 does not hold water to this cartridge on and overall avg out to 1000 yards.
To the original poster I stand by my recommendations of caliber choices. One other I mentioned but didn't elaborate on is the 308 its very accurate and capable but the recoil leads me away from this cartridge the same for a 300 win mag.
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I fully recognize the importance of shooting technique, quality barrel, properly aligned scope, quality ammo, etc. Believe me, my practice, advice from other shooters, high end expensive gun components, bedding, tedious scope alignment, Forster Co-Ax press, Sinclair measurement tools, higher end dies, Lapua brass, Bench Rest thoroughness on reloading process and techniques, etc, are ensuring maximum accuracy and precision for whatever round is fired. But, I don't believe there is any denying that some cartridges are inherently more accurate than others and don't believe choice of cartridge is in the realm of an "afterthought". This is not to deny the importance of all else mentioned, but I can't find anyone that with all else being equal, would say the 223 is the equal of a 6mmBR. My AR15 can shoot a 223 in a .25" 5 shot group at 100 yards off a bipod, but want better, the best, that can be achieved at these shorter distances, out of a bolt action mag fed weapon. If the 223 is the #1 caliber for that, then OK.
Phil
The .243 isn't the barrel burner as some portrays it to be especially shooting heavier bullets. If you push the 55 Gran pills down it at super hot loads yes it'll burn a good barrel up. If you can get an 8 twist barrel that's your best luck.
isn't it funny how a young kid can sit behind a rifle and outshoot us for the most part? Same goes for women as well.
Good luck on what you decide on.
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After a post like that, it seems you should be telling us which cartridge is best.
I know exactly zip.shit about bench rest, and the knowledge base here on the snipers hide is predominantly tactically-oriented. Perhaps a different forum would yield you better answers.
Nah. I've no idea what is the most accurate mag fed round for 100 - 600 yards. Nothing I have said would suggest I would know that. I wrote the post in this forum specifically because it is a tactical forum, using mag fed rifles, which Bench Rest people generally do not. The question is simple. Which mag fed round is generally accepted to offer the best accuracy (small groups in the X) at 100 to out as far as 600 yards. I know there may be multiple choices, and just trying to make an informed decision. So far, a 243 may work and am looking at the 6.5 x 47 but not sure about recoil on that one. A muzzle brake could help.
Phil
Phil3
If you can use a center stack magazine the 6BR and 6 Dasher feed fine and are currently the king of the hill out to 600 yards and the Dasher takes you to 1,000 with no worries.
You are welcome to shoot both this sunday at Circle S Ranch out of two rock.
Lynn
The 6mmBR is widely regarded as one of the most accurate cartridges around , but since mag feeding with it looks iffy at best, what is the most accurate mag fed cartridge? This is just for target shooting only, at 100 - 600 yard max. Phil