tagacali Posted June 5, 2012 Share Posted June 5, 2012 Is it highly recommended to have 1/8 twist barrel compated to 1/7 twist? Is 1/7 twist good enough? Thanks. Link to comment Share on other sites More sharing options...
abn-rgr Posted June 5, 2012 Share Posted June 5, 2012 1/8 is the best twist rate to cover the variety of bullet weights being used in 3 gun. Link to comment Share on other sites More sharing options...
MarkCO Posted June 5, 2012 Share Posted June 5, 2012 I've used from 1:7 to 1:10. I prefer the 1:8, but if I had a 1:7 it would not bother me at all. Link to comment Share on other sites More sharing options...
tagacali Posted June 5, 2012 Author Share Posted June 5, 2012 I was leaning towards 1:8 twist but it's just hard for me to get one with a fluted barrel Link to comment Share on other sites More sharing options...
MarkCO Posted June 5, 2012 Share Posted June 5, 2012 Not fluted, but the Nordic barrel is great one for 3Gun... Link to comment Share on other sites More sharing options...
assaulter Posted June 5, 2012 Share Posted June 5, 2012 Not fluted, but the Nordic barrel is great one for 3Gun... Absolutely! Link to comment Share on other sites More sharing options...
splitime Posted June 5, 2012 Share Posted June 5, 2012 I have that exact barrel waiting for me on my porch. Can't wait to try it out. Link to comment Share on other sites More sharing options...
co-exprs Posted June 5, 2012 Share Posted June 5, 2012 Fluted is cool, but the cost to benefit is pretty steep. The Nordic 18" is plenty good and if you don't mind spending a few more bucks, a JP 18" would be a great choice too. Link to comment Share on other sites More sharing options...
tagacali Posted June 5, 2012 Author Share Posted June 5, 2012 I'm looking for barrels with .750 gas diameter Link to comment Share on other sites More sharing options...
BigBamBoo Posted June 5, 2012 Share Posted June 5, 2012 Do you want flutes cuz they look cool? I would recommend a JP barrel and one of there "thermal dissapators" (heat sink). That way you have a light weight barrel, but far better cooling then a fluted barrel. Oh...and they shoot VERY well too! Take care,Stan Link to comment Share on other sites More sharing options...
co-exprs Posted June 5, 2012 Share Posted June 5, 2012 JP makes an 18" light profile barrel with a .750" gas block diameter. You can get it in polished stainless, bead blasted, or black. You can get it as a complete assembly or just the barrel. You can get a low profile gas block or a railed block. You can have it in a house and you can have it with a mouse. You can have it on a train, you can have it in a plane. Link to comment Share on other sites More sharing options...
AustinT Posted June 6, 2012 Share Posted June 6, 2012 I was leaning towards 1:8 twist but it's just hard for me to get one with a fluted barrel Loki's got one. JP makes an 18" light profile barrel with a .750" gas block diameter. You can get it in polished stainless, bead blasted, or black. You can get it as a complete assembly or just the barrel. You can get a low profile gas block or a railed block. You can have it in a house and you can have it with a mouse. You can have it on a train, you can have it in a plane. I've got a JP LW 18". It's sub MOA with Hornady 55gr FMJs at 200 yards. That's good 'nuff. It doesn't complain when I get it hot. Link to comment Share on other sites More sharing options...
Lead-Head Posted June 6, 2012 Share Posted June 6, 2012 I agree that 1/8 is the best "all around" barrel if you like to shoot a variety of loads. 16-20" with a med to light profile will work fine. My TI rifles both have 20" 1/9 barrels, CL CMV GI profile. If you don't go too bullet heavy these are fine. I shoot 55 grains at everything. There a several good 1/7 20" GI profile barrels out there. I wouldn't say you need fluting, or a heat sink. Don;t need SS, nitride, or Chrome lining. However a med to light profile is nice, no matter the length. With a good FF handguard, trigger, and sighting sytem; most barrels will shoot plenty good enough for 3-gun. Link to comment Share on other sites More sharing options...
michael1778 Posted June 6, 2012 Share Posted June 6, 2012 Since the original poster (OP) is relatively new to our world, I offer this dictionary: TI = Tactical Irons division FF = Free Float Link to comment Share on other sites More sharing options...
9X23Guy Posted June 6, 2012 Share Posted June 6, 2012 If money is no object call Kreiger, they'll make anything you want. Scary good accuracy, just another to think about. Link to comment Share on other sites More sharing options...
Alaskapopo Posted June 6, 2012 Share Posted June 6, 2012 1/8 is fine so is 1/7 I have both and both work well with bullets from 52 to 77 grains. pat Link to comment Share on other sites More sharing options...
KSwift Posted June 6, 2012 Share Posted June 6, 2012 Wow, really? Well, this thread is a little empty, both in heart and content. Short answer: Yes, 1:7 and 1:8 will be so minutely close that a 1:7 barrel is "good enough", don't give it a second thought. You won't ever notice the difference at a match. Long answer: OMFG, WHAT WERE YOU THINKING???!!!! 1:7???!!! Let's assume your talking about .223/5.56, you didn't specify caliber, but it's a million to one odds. Heavy metal rifles in .308 have much slower twist rates than .223 ARs for the most part. What ammo do you shoot? Cheap bulk factory by the thousand? Then 55gr it is. Other cheap bulk, 62gr steel core is a no-go for 3-gun targets. The only stuff you'll find in heavier weights (75,77) for cheap is ruskie steel case, which will give you more extraction fits, and is generally poo-pooed by us patriotic Americans. For 55gr, the slower twist rates will be better suited, but only slightly. At the typical distances stages will be set up, you won't even be able to overstabilize varmint grain weight bullets so bad that it matters at all. Next, how are accurate do you consider yourself? Remember, 3-gun rifle targets are generally engaged in one of 3 positions; offhand, improvised prone, and improvised barrier support. These are not inherently accurate positions and you don't have a lot of time to futz with them, so your technique will affect your accuracy 1000x more than the difference between 1:7 and 1:8. Link to comment Share on other sites More sharing options...
Kyle O Posted June 6, 2012 Share Posted June 6, 2012 Faster twist rates are for heavier bullets. 69gr or 77gr are the most popular choices for heavy .223 bullets. 1 in 8" is what I launch 69's out of, and they do fine. Link to comment Share on other sites More sharing options...
Alaskapopo Posted June 6, 2012 Share Posted June 6, 2012 Wow, really? Well, this thread is a little empty, both in heart and content. Short answer: Yes, 1:7 and 1:8 will be so minutely close that a 1:7 barrel is "good enough", don't give it a second thought. You won't ever notice the difference at a match. Long answer: OMFG, WHAT WERE YOU THINKING???!!!! 1:7???!!! Let's assume your talking about .223/5.56, you didn't specify caliber, but it's a million to one odds. Heavy metal rifles in .308 have much slower twist rates than .223 ARs for the most part. What ammo do you shoot? Cheap bulk factory by the thousand? Then 55gr it is. Other cheap bulk, 62gr steel core is a no-go for 3-gun targets. The only stuff you'll find in heavier weights (75,77) for cheap is ruskie steel case, which will give you more extraction fits, and is generally poo-pooed by us patriotic Americans. For 55gr, the slower twist rates will be better suited, but only slightly. At the typical distances stages will be set up, you won't even be able to overstabilize varmint grain weight bullets so bad that it matters at all. Next, how are accurate do you consider yourself? Remember, 3-gun rifle targets are generally engaged in one of 3 positions; offhand, improvised prone, and improvised barrier support. These are not inherently accurate positions and you don't have a lot of time to futz with them, so your technique will affect your accuracy 1000x more than the difference between 1:7 and 1:8. Again I have been shooting bullets as light as 50 grains in my 1/7 Noveske and they shoot fine and in fact the 52 grain match loads equal my heavyies (77 grainers) at 100 for accuracy. The only real potential problem for so called over stabilazation would be with 40 grain lightly built varmit bullets but we don't generally use those in this sport. Pat Link to comment Share on other sites More sharing options...
jdknotts1 Posted June 9, 2012 Share Posted June 9, 2012 Is it highly recommended to have 1/8 twist barrel compated to 1/7 twist? Is 1/7 twist good enough? Thanks. I have the stock 16" bbl that came on my Colt LE6920. It's a 1:7 and it shoots 55gr sub moa all day long. Link to comment Share on other sites More sharing options...
Griz Posted June 9, 2012 Share Posted June 9, 2012 Again I have been shooting bullets as light as 50 grains in my 1/7 Noveske and they shoot fine and in fact the 52 grain match loads equal my heavyies (77 grainers) at 100 for accuracy. The only real potential problem for so called over stabilazation would be with 40 grain lightly built varmit bullets but we don't generally use those in this sport. Pat I shoot 40gr varmint bullets at high velocity in 2 different 1 in 7 barrels from WOA... I get under 1/2 minute out to 300 yards in benchrest competition. I asked someone at WOA about why this was the most accurate bullet out of my 1 in 7's when everything I read said light bullets would blow up if shot from 1 in 7 barrels... His answer was "believe what you see, not what you read". Link to comment Share on other sites More sharing options...
BigBore56 Posted June 10, 2012 Share Posted June 10, 2012 (edited) These are what I am building for 3-gun matches right now. Extremely accurate...expect groups of 3.25" at 400 yards. Bottom line: I am using Nordic Wilson 18" 1:8 barrels, rifle gas systems, and Nordic's Corvette compensators. Shooting 69 SMK's over Varget. Edited June 11, 2012 by BigBore56 Link to comment Share on other sites More sharing options...
jdknotts1 Posted June 10, 2012 Share Posted June 10, 2012 These are what I am building for 3-gun matches right now. Extremely accurate...expect groups of 3.25" at 400 yards. http://www.nextechclassifieds.com/listings/view/346246/ And what does this have to do with twist rates and bullet grs? Link to comment Share on other sites More sharing options...
carbon9 Posted June 10, 2012 Share Posted June 10, 2012 These are what I am building for 3-gun matches right now. Extremely accurate...expect groups of 3.25" at 400 yards. http://www.nextechclassifieds.com/listings/view/346246/ And what does this have to do with twist rates and bullet grs? Looks like it has nothing to do with either to me. IMHO it looks like attempts at free advertising. Hopefully BigBore56 will just pony up and pay for a slot in the vendors section. Link to comment Share on other sites More sharing options...
21 guns Posted June 10, 2012 Share Posted June 10, 2012 In my limited experience, I'm shooting 55grain out of a (piston) 16" 1:7 barrel and it seems to group well at 100 yards. I also tested a group with 75gr Hornady steel match, and it did not group as well. I always thought the higher twist rates would favor heavier bullets, but it may simply be - whatever your gun likes. ( or it may have just been shooter inconsistency!) Link to comment Share on other sites More sharing options...
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