Benchrest Caliber Questions

Discussion in 'Competition Shooting' started by skyhawk, Aug 27, 2010.

  1. skyhawk

    skyhawk New Member

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    I've been interested in getting into target shooting, however I am confused with all the different calibers for this application. Not trying to phrase this as what is the best cartridge. I would like to know the benefits of different calibers of the 6mmBr, 6PPC, 6.5x55, 6.5x285, 6.5x47, 6.8SPC, and others. Most likely I would be using these at 100-600 yards. Also it seems very expensive to shoot these rounds for the price I could be using a 300 win mag:). Any info on what you use or benefits of the differend calibers would be greatly appreciated.
     
  2. c3shooter

    c3shooter Administrator Staff Member

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    Man once told me "Accuracy is expensive. So.... How accurate do you wanna be?"

    There are EXTREME accuracy cartridges (with the right rifle and right shooter) and there are accurate rounds that began as hunting catridges. Obviously, the 6mm BR, the 6PPC, etc, began as target rounds. To really get the most of these, I believe you will be handloading your ammo.

    On the other hand, the 6.5 Mauser is (IMHO) one of the most accurate HUNTING rounds developed, and it has drifted over into the target shooter realm. Same for the .308, etc. But the REAL big boys at 600 yards are not using 30 cals.

    Benefits can be argued back and forth over at least a case of beer- how a bullet reacts to wind, the ballistic co-efficent of a given bullet, recoil, availability of barrels and brass, etc. I realize I have not given you an answer, but that is why they have all those flavors in the freezer in the ice cream section.

    You may want to read this- World Record Sub-Inch 600-Yard 6BR
     

  3. skyhawk

    skyhawk New Member

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    Thanks for the link I was really having a hard time at first comparing the rounds because many were talking about their accuracy under 300 yards. The added distance seems to leave the 6mmbr and the 6.5x47 for me to review. And there are plenty of postings in various forums for to read about that.
     
  4. cpttango30

    cpttango30 New Member

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    Right now the 6mm PPC is the king of the bench for short range 100 to 300 yards. For 500+ yards they step up to 6.5, 7 and 30cal and even 338 cal rounds.

    I know guys shooting 243win in F-Class matches. I also know guys shooting 6mmbrx in 1k bench rest matches.

    For all things 6mm look at http://www.6mmbr.com/ There are tons of stuff on there

    Also 6.6-284 is a very popular 1k round. The 284 win it picking up popularity as well.

    If you are wanting the best all around cartridge for 100 to 600 yards. Look at the 6mm ppc, 6mmbr, 6brx, 6 Dasher and the 6XC.

    The short fat cartridge is all the rave and started with the PPC cases in 22 and 6mm ppc.

    I love the .257 caliber but, for accuracy and distance your are left out in the cold. The 25 cal will do anything a 6mm will just better. and the 257 will do anything a 6.5 and 7mm can do just with less recoil. Many don't like the 25 cal so there are not many match grade bullets out there for it.
     
  5. bgeddes

    bgeddes New Member

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    I shoot 100-200-300 yard Benchrest regularly. There are 2 calibers for the Varmint guns and 2 for the Hunter class guns. 6mm PPC, and 30 BR for the Varmints, and 30x47 or 30 Aardvark for the Hunter class guns (the hunter guns have to shoot from a case capable of holding 41 grains of water). That's it. Many of these guys are past World Record holders. If there was a cartridge that would work better, you can best you last dime they would be shooting it.
     
  6. Catfish

    Catfish New Member

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    The truth of the matter is that the caliber of the rifle does not make as much difference as the quality of the rifle. For 100 and 200 yrd. shooting the bc of the bullet doesn`t make alot of difference eather. When you start streaching it out to 500 plus yrds. you really need to be shooting bullets of .500 plus BC. A real good 100 and 200 yrd. gun woun`t shoot at 600 yrds. with a run of the mill 600 yrd. gun, and a run of the mill 100 yrd. gun will clober a good 600 yrd. gun at short yardages. Do a little reading on external blastic befor you make up your mind what you want, then get read to lay out some serious buck if you want to compete with the big boys.
     
  7. skyhawk

    skyhawk New Member

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    Thanks for the advice, I'll look at the other calibers mentioned and compare the BC as well and considering recoil. Yes, I do plan on purchasing/building a high quality rifle once I make up my mind.
     
  8. Catfish

    Catfish New Member

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    The most popular round used today is probly the 6 br. for the 100 and 200 yrd. matches, but if your going to push it out to 600 yrds. you will need to go with a fast twist and heavy lead which may hurt you alittle with the short matches. Or you can just use the lite bullet for 600 yrds. and take the extra drift. Your other option would be to go with a switch barrel gun and have a barrel for each.
     
  9. bgeddes

    bgeddes New Member

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    I was at a match yesterday and there was not one gun in 6BR. I'd wager the match I'm going to in two weeks there will not be one their either.

    There were lots of 6mm PPC (but the match was at Dr. Palmisano's range. Turn's out he's a great cook, he made us all lunch.)

    I've never seen a 6mm BR, even at big shoots like the Bud.
     
  10. inmate of Md

    inmate of Md New Member

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    Have seen some 6BR's at 1 to 300 yard matches, but none do really well.
    People were shocked to see how well the 6ppc will shoot at 600 yards. Some really small groups with rifles set up for short range.
    The big shocker was how well the 30 BR does at 600.
     
  11. greydog

    greydog Member

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    When I built my first 6PPC (in 1979) the 6BR was still under developement. I got reamers for both BR cartridges (22 and 6mm) soon after and built a few for other shooters. I stuck with the 6PPC though. At the time, Remington BR brass was 308 brass with a small primer pocket and it took considerable effort to form it to 6BR. Lee Six's daughter, Cindy, sold formed brass and it was worth it to pay her rather than to do it yourself.
    If Remington had produced 6 BR brass at that time, the PPC might not have been quite so dominant.
    Presently, I shoot a 6BR at short range out of sheer obstinance. It is competitively accurate and, with the excellent Lapua brass available today, it is a viable round for short range use. I am usually the only one shooting a 6BR however and if pressed, I will always recommend a 6PPC. GD
     
  12. Badshot320

    Badshot320 New Member

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    I havent alot of experience with the 30br at 300+ yds but im pretty sure it doesnt fall into the top pick category for 300+ yd accuracy nor does the 6br, 6ppc,22ppc etc. Sorry I cant give you a proper answer on what the best round is for 600yd competition is but the rounds you listed are not going to be one of them for sure. Maybe a 243 Win Improved? 250 Savage imp? Someone argue with me.......:cool:
     
  13. greydog

    greydog Member

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    Actually, the 6BR is close to being the dominant choice from 300 meters out to 600. I shoot at a very competitive 300 - 500 meter F class match every year and it's usually dominated by 6 BR's. I have done well and even won with a 308 but it's a struggle to stay with the easy-to-shoot BR. GD
     
  14. inmate of Md

    inmate of Md New Member

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    the 6BR holds many records at 600 and 1000 yards. Have seen many tight groups at 600 from 6ppc. Using 62 to 68 grain bullets the accuracy is very good. Have seen two 17 Mach 2 rifles win group at a big 600 yard match.
    The 6BR has proven you do not need a magnum case to shoot 1000 yards.

    The key to this is your set up for the yardage you are shooting. Working the load for that yardage.

    Best of luck.
     
  15. King Ghidora

    King Ghidora New Member

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    The 6br set the world record for 600 yards a while back shooting a sub 1" group. I have no idea whether this record still stands but it was only the second group under 1" ever shot. The first was in the same competition and was with 6.5-2.84. AFAIK the 6 calibers are all doing quite well with some a little better than others of course.

    FWIW other calibers can be made to shoot very accurate at those distances. F class shooters use either .308 or .223 and they do quite well with both calibers out to 1000 yards and sometimes beyond. 1000 yard benchrest shooters are using 6 and 6.5 bullets and are shooting groups you can cover with the palm of your hand at 1000 yards. They are becoming the standard for that distance too especially for the weight limited rifles.