6mm ARC VS 6PPC
- Thread starter SD guy
- Start date
Two totally different platforms nothing to compare IMO, both do the job that it was designed for very well.
Jerry
jelenko
Gold $$ Contributor
Well, for people with AR's, it might be a big freak-n deal.
Fair enough. Yet I feel they defiantly have more similarities than other cartridges that I am familiar with.
Larry Koch
Silver $$ Contributor
If you shorten the freebore on a 6mm arc to run 68 grain bullets. And use it in a quality bolt gun, with same 13.5 twist barrel. You would have a 6ppc using 6arc head stamp brass. So it should shoot like a 6ppc to the degree of the gun and operator. In the 100 to 200 yard distance in which it was design.
That's the problem with the 6MM with low-capacity cases, you need the heavy weight projectiles to buck the wind. If you want to push the light weight 6MM projectiles fast enough to reduce the time of flight, you need more powder increase the speed.
I use a 6MM Remington and push a 75 grain at 3,900 FPS and even then, 600 yards works for coyote sized game, but it gets tough for smaller game.
Well lets not forget the 6 Grinch with proper throat it's a much better cartridge than the PPC at the longer ranges. So as it says above Hornady comes out with the 6ARC with a longer throat and all of the sudden it's full of long range glamor. Frankly the longer and heavier bullets just choke the little cartridge's powder capacity. I tried the 6PPC with 8 twist and heavy bullets. The heavier bullets greatly reduced velocities and performance didn't appeal to me.
I did not read everyone's opinions on this topic, but I have asked this question to myself several times and have never really been given an official answer, so i went on a investigation over the last several years. My thoughts up to this point;
This is just what I have pieced together over the years of shooting my 6ppc, so literally take it like salt, sparingly.
Maximum amount of powder that can be put in the case. I have heard from several sources on youtube, that to maximise accuracy, the case must be as full as possible. Small and large rifle primers lean in opposite directions, generally, in terms of accuracy vs practicality.
100-300 yards vs 500-1000 yards, hence the bullet densities and twist rates. A minimal twist rate to suggest a bullet to rotate vs an aggressive twist rate to force a bullet to rotate. Take this with a grain of salt, both may be suggestive and the denser bullets may have drastic difference in the rotation. Just posting my observation and conclusions.
The 6ARC from my research, which is not a whole lot of research, comes from a different foundation all together. 6 ARC brainstormed from the standpoint of an AR type rifle, which means the shoulder angle will have to be shallow enough for fast reliable loading into the chamber from a magazine. The 6ppc in this case, not all, but most are bolt action single shot. I seen some sporter versions on gunbroker, but far less than single shot. Again just some thing i put two and two together on during my interaction with the cartridge.
Ammunition; Factory loaded ammunition and reloading ammunition. Sako stopped selling 6ppc ammunition here in the states many moons ago. If I find it on gunbroker, I buy it. Its great in my 6ppc. Yes its still available in its home country, but just not here in the States. 6mm Arc is readily available, although again take with a grain of salt as when you read this, it could come off like I am smoking out of my hiney, being there could be an ammunition shortage.
Lastly, the elephant in the room probably by this point. The 6PPC USA vs the 6 PPC with a custom neck diameter. My information, observations, and conclusions have all been from my Sako 6PPC USA rifle. While I do kind of flirt with the idea of ordering a custom built 6 PPC, it will always be that fantasy. I would never spend that kind of money on my hobby when it could be left to my wife to better spend on our family needs.
And lastly, for those who know of the family who have the Unashamed Podcast, Phil Robertson was diagnosed with Alzheimer's. Amen to the family and him!
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Maxden
Silver $$ Contributor
Because the higher barrel twist rates did not previously exist for PPC built rifles
I think it has more to do with loads commonly used in a ppc vs anything to do with availability of bbls. I mean...a person can run a ppc reamer into any 6mm bbl, regardless of twist and fast twist 6mm bbls have been around for a long time.
Hi,
A bit late replying, I just read your post. The 6mm PPC barrels are traditionally a 1:14" twist rate. They will not shoot (stabalise) heavier bullets. The 6mm ARC is commonly a 1:8' twist rate.
Aussiebloke
I know this is pretty old, but this is how i look at the ARC. I come from PPC and PPC USA background. I am not sure id case capacity are the same though and if I am correct from my own experience, the PPC's both versions gain accuracy the more compressed the loads are. I been shooting 68 grn bullets from Bart through a 8 twist barrel. Is what came on a rifle i Bought, Just as accurate as 13 twist. seems the case capacity in my experiences has governed the group size in my rifles. I asked Bart, he said the 8 or 13 or 16 will be fine for 68 grain bullets.
THe PPC topic in general from the load books/manuals I have vary from 1-14 to 1-13 twist. Twist rate is why. I think the Norma BR, and Arc use the 8 twist which is for heavier(longer to be more correct) projectiles.
On a mini action I do think the 6mm Arc is the first SAMMI approved fast twist 6mm cartridge on the market.
WyleWD
Silver $$ Contributor
+1^^^^ Larry is correct IME. When compared apples to apples there isn't enough difference to debate about between the PPC and the 6ARC. The shooter, barrels, bullets, wind reading skills, and bench manners will make the difference. I shot both 6arc and 6ppc out of 14tw barrels using 65-68gr bullets for 6 months last year. There were several matches I shot that the ARC shot better than the PPC. JME. WD
koger
Silver $$ Contributor
I have a 40x, Hart barrel, McMillan stock, 6ppc that will stack them all day long using Bart 68 gr bullets, at 3000 fps , with a .262 neck. It is a great rifle. There are no benchrest matches that are close to me, and I just wanted a PPC to see how good they shoot, and it did not disapoint.
I traded for a 2 week old Ruger Gen 2 Predator in 6ARC. I did a trigger job on it that is under #2. With a 4x12 Vortex scope on it, not a 24x Leupold like the 6ppc, it runs the same bullet at 3400fps and 5 shot groups are in the low .3's, and a 85 Sierra Game King at 3050fps are 5 shots in the low .4's, chronoed. I am using Starline brass, with a load I threw together using H335 because I had #9 of it. The rifle has a brake on it, which kills the recoil pulse. For a rifle I have $400 in, I am tickled pink with it, don't have to turn necks, case stretch is non-existent so far. For deer and varmints, it will do the job, it is my go to truck/atv gun for varmints here in KY. I am putting a better scope on it soon, I just had the one extra that I put on it. I imagine it will shoot better with a 6x20 X44 Vortex Viper on it that I have extra right now. I am not trying to shoot matches with it, but it is doing a dang good job on yotes, and crows, and is a great gun for beginning deer hunters with no recoil, especially kids. I think the 6ARC is a more versatile round than 6ppc, as they both stand, and if both were built to the same specs, I sure we would see a little more velocity out of the 6ARC, and about the same accuracy, give or take. I was late to the game on both the 6PPC and the 6ARC because I really didnt need one as my .243 or 6XC's did all that I needed them to do. But I ended up liking them both because they are both, very accurate cartridges, for different jobs, as I see it. I love accurate rifles as we all do. If I were a young feller with a wife and family just getting started, I can see how a 6ARC would be a neat rifle to scratch several itches with, at a low price point. You could varmint hunt, deer hunt or ring steel way out there with not a lot of powder, cheaper primers, brass and bullets, or you could shoot a group with inexpeniver rifle/scope set up, that we used to dream about doing with a bench guns back in the 1970s and 1980s. Just my take on the rounds, no sense in getting heated up over the ins and outs .
I traded for a 2 week old Ruger Gen 2 Predator in 6ARC. I did a trigger job on it that is under #2. With a 4x12 Vortex scope on it, not a 24x Leupold like the 6ppc, it runs the same bullet at 3400fps and 5 shot groups are in the low .3's, and a 85 Sierra Game King at 3050fps are 5 shots in the low .4's, chronoed. I am using Starline brass, with a load I threw together using H335 because I had #9 of it. The rifle has a brake on it, which kills the recoil pulse. For a rifle I have $400 in, I am tickled pink with it, don't have to turn necks, case stretch is non-existent so far. For deer and varmints, it will do the job, it is my go to truck/atv gun for varmints here in KY. I am putting a better scope on it soon, I just had the one extra that I put on it. I imagine it will shoot better with a 6x20 X44 Vortex Viper on it that I have extra right now. I am not trying to shoot matches with it, but it is doing a dang good job on yotes, and crows, and is a great gun for beginning deer hunters with no recoil, especially kids. I think the 6ARC is a more versatile round than 6ppc, as they both stand, and if both were built to the same specs, I sure we would see a little more velocity out of the 6ARC, and about the same accuracy, give or take. I was late to the game on both the 6PPC and the 6ARC because I really didnt need one as my .243 or 6XC's did all that I needed them to do. But I ended up liking them both because they are both, very accurate cartridges, for different jobs, as I see it. I love accurate rifles as we all do. If I were a young feller with a wife and family just getting started, I can see how a 6ARC would be a neat rifle to scratch several itches with, at a low price point. You could varmint hunt, deer hunt or ring steel way out there with not a lot of powder, cheaper primers, brass and bullets, or you could shoot a group with inexpeniver rifle/scope set up, that we used to dream about doing with a bench guns back in the 1970s and 1980s. Just my take on the rounds, no sense in getting heated up over the ins and outs .
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