ar-10 6.5 creed vs 25 creed
- Thread starter PRSDietitian
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What do you want to do with it? Varmits or lighter game 25creed. Larger game 6.5 creed. If pure competition either.
I have some experience running a gas gun in PRS. I would stick with 6.5cm simply because it almost seems too easy to tune. We all know how finicky an ar10 can be to set up and run reliably, and while I've never shot or seen one in 25cm, I have and have had several in 6cm, and they can be really tricky to get them tuned where you'll trust it in a match format all day or all weekend long. The 6.5cm in my humble opinion is the easy button for ar10 cycling, even easier than the crusty .308. I don't really think the difference in those two cartridges will get you one more impact, so you're potentially inviting a more tricky gas system for no real gain. In addition, gas guns are rough on brass. I don't load ammo specifically for ar10's in prs matches because it's going to get trounced as often as not, and you can buy good bulk match ammo for 6.5cm cheaper than you can load it. Not an option for 25cm. Good luck either way.
Na, 25 creed has big bc advantage especially out in the midwest and west with big winds.
So i was doing the math on shooters calculator and the berger twist rate calculator
between the 25 creed 135 berger going 2800 in a 1:7.5 24" barrel vs a 144 berger going 2725in a 1:8 twist. both have a stability factor of 1.61.
25 creed has about 0.7 mil less drop at 1000 yards but only like .1 mils less on wind. so the difference isnt huge. i get ammo from Eagle Eye Ammo regardless because i don;t have as much time to reload as i used to
between the 25 creed 135 berger going 2800 in a 1:7.5 24" barrel vs a 144 berger going 2725in a 1:8 twist. both have a stability factor of 1.61.
25 creed has about 0.7 mil less drop at 1000 yards but only like .1 mils less on wind. so the difference isnt huge. i get ammo from Eagle Eye Ammo regardless because i don;t have as much time to reload as i used to
25 creed. I have shot some 6GT gas guns that shoot well but they can be a pain to setup right. The 25 should perform flawless in a large frame. You also get a huge BC boost with not much more recoil to offset.
My suggestion would be to either source a JP or Seekins upper if you do a build. There is considerable POI shift when you load the hand guard like on many positional stages. You want a mono or semi monolithic upper where the handguard does not attach directly to the barrel nut, inducing shift.
6 Arc is cool and i have a gun setup to shoot matches with it but they are just too light. Even loaded with weights you are going to want to go with a large frame AR. The two best opions are to either buy a SP10 and put a new barrel in it or buy a JP upper.
Don't bank on velocities. With a 24" barrel you are most likely going to get WAY less than you think, and with a gas gun, you need to run at lower pressure to keep everything safe and prevent premature wear.
There is a not a huge difference between both but if you are going to try and min/max the game, the 135 berger is it.
You need to not think of wind conventionally. You need to think, what is my wind budget to keep me on plate. Especially with switching head/tail winds.
Another option would be the 7mm Creed. I shot one out of a bolt gun a few weeks ago and got all giddy. He rarely needed to come off plate on alot of the stages we had to chose which side to hold off in changing winds. Massive advantage IMO. The BC of the 180-190 class 7mm bullets is nuts, and you dont have to get them going very fast to outperform.
Just thinking outloud here.
I definitely appreciate the insight! And one thing I like is you basically confirmed who I’m getting my stuff through anyway. So unfortunately I can’t get the SP 10 builder sets anymore because I’m getting my own barrel but I am getting a JP upper minus the barrel. Paul Ross is doing my barrel work so I have 100% confidence in my barrel. I just need to get him a blank. And right now it’s between a 7.5 twist 25 Cal barrel from CRB or 8 twist benchmark. I definitely trust both companies very much. At this point, it’s more nuance than anything else. The ammo is the same price from Eagle eye no matter what and the performance is going to be very close on both IPO. Luckily with Hornady having the 25 Creedmoor approved with SAAMI, You’re gonna see more factory ammo now and Hornady does sell 25 Creedmoor factory ammo so I can use that for the break-in. Unfortunately, I am definitely one of those Paralysis by analysis guys, so unfortunately, I overthink things a lot and in this game that’s not necessarily a good thing
Sounds like you are on a good track. I have been shooting CRB barrels for the last year and am super impressed but you cant really go wrong with any of the modern cut rifle barrels. I keep hearing good things about Paul Ross. One of the members here just had him do a .223 bartlien and it shoots around 1/2 moa. May have to order one.
Yeah, looks like he was the head smith at Compass Lake. Last I checked he was doing chamber, contour, thread, barrel extension job for 200 with an 8-10wk turn around if blank is shipped to him. He said he's ordering a 25 creed reamer since popularity has gone up. I gave him all the details around my build and use case to get his opinion since he's been in this game infinitely longer than me.
btw jake vibbert's company Rifle Barrel Blanks has great deals on barrels. Thats where I planned to order from.
Current build plan minus barrel
JP low profile side charge upper with 17.25" handguard and 15" arca rail
VMOS or LMOS BCG with HP bolt
SLR Sentry 9 or Wojtek .936 adjustable gas block
hawkins updraft brake
JP Lower with included small parts including jp ambi safety
Triggertech Diamond Single stage AR-10 trigger
H2 silent captured spring
MDT Premier Grip
Magpul PRS Gen 3
Plan to run a burris XTR Pro in an Audere 20 moa 34mm 1.5" mount, Accutac SR-5 Bipod. Will also swap between brake and a PTR Vent 1 when i get it in hand, going direct thread.
JP low profile side charge upper with 17.25" handguard and 15" arca rail
VMOS or LMOS BCG with HP bolt
SLR Sentry 9 or Wojtek .936 adjustable gas block
hawkins updraft brake
JP Lower with included small parts including jp ambi safety
Triggertech Diamond Single stage AR-10 trigger
H2 silent captured spring
MDT Premier Grip
Magpul PRS Gen 3
Plan to run a burris XTR Pro in an Audere 20 moa 34mm 1.5" mount, Accutac SR-5 Bipod. Will also swap between brake and a PTR Vent 1 when i get it in hand, going direct thread.
