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Old December 7th, 2017, 06:39 AM #11
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16” .308 or 22” 6.5 Creedmoor?

I like the 308 with 20" barrel...

You can buy good quality 308 ammo inexpensively at Walmart 308 in Fallston...

Try finding 6.5 Creedmore anywhere at any price locally when the shtf...

308 will get it done & you can afford to stock some ammo...

Just one old Jarhead's opinion...
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Old December 7th, 2017, 06:56 AM #12
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I am a 6.5 Creedmoor fanboy.
That being said, for shots under 500yds, the .308 is a better rifle for deer. The 6.5CM really shines when you start getting out to some serious distance. I don't see that happening on a 16 acre farm.
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Old December 7th, 2017, 07:23 AM #13
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Quote:
Originally Posted by Yoshi View Post
I don't think the 6.5 is going anywhere. It may lose some steam, but the industry is fully backing it and it's popular among the reloaders, non-reloaders, hunters and competition shooters. It's not as easy to get as .308, but it aint exactly hard either.

Some of the secondary considerations are barrel life, "cheap" ammo, and recoil. Of course, you can mitigate some of that but, ballistically, the 6.5 makes the .308 look silly.
I agree.

BUT the 6.5CM WAS the pro's cartridge just a few years ago now its on the outs...

http://precisionrifleblog.com/2017/0...-the-pros-use/
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Old December 7th, 2017, 08:34 AM #14
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Quote:
Originally Posted by DENWA View Post
I agree.

BUT the 6.5CM WAS the pro's cartridge just a few years ago now its on the outs...

http://precisionrifleblog.com/2017/0...-the-pros-use/
i think 'on the outs' is a bit of an overstatement. it's an excellent competition round with a bunch of good factory ammo options out there. can even find some ammo in walmart unlike anything else on that list (other than 308 of course). it certainly has the lion's share at the last LR match at peacemaker that i did.
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Old December 7th, 2017, 10:41 AM #15
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Quote:
Originally Posted by sgt23preston View Post
I like the 308 with 20" barrel...

You can buy good quality 308 ammo inexpensively at Walmart 308 in Fallston...

Try finding 6.5 Creedmore anywhere at any price locally when the shtf...

308 will get it done & you can afford to stock some ammo...

Just one old Jarhead's opinion...
To expand on this thought, 6.5cm IS NOT USED in MACHINE GUNS...
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Old December 7th, 2017, 02:56 PM #16
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Another dumb question while I’m at it, will running a suppressor on a .308 help reduce recoil?

I did a brief price check online for ammo and it appears I will pay roughly the same give or take on various grains and brand.. Being able to grab a inexpensive box of .308 at my local Walmart (Fallston) is always a plus..
The only standout I see is being able to buy .308 Sub’s for around a $1 a trigger pull

https://www.midwayusa.com/product/10...ail-box-of-100

Either way it appears this is another Ford vs Chevy Coke vs Pepsi debate
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Old December 7th, 2017, 03:20 PM #17
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Quote:
Originally Posted by Rob R. View Post
Another dumb question while I’m at it, will running a suppressor on a .308 help reduce recoil?

I did a brief price check online for ammo and it appears I will pay roughly the same give or take on various grains and brand.. Being able to grab a inexpensive box of .308 at my local Walmart (Fallston) is always a plus..
The only standout I see is being able to buy .308 Sub’s for around a $1 a trigger pull

https://www.midwayusa.com/product/10...ail-box-of-100

Either way it appears this is another Ford vs Chevy Coke vs Pepsi debate
I have a DPMS G2 .308 with a 16" barrel but haven't yet shot it suppressed. I have a 20" bolt gun in 308 that I do shoot suppressed but I can't say it makes a huge difference on recoil. It feels like less recoil but it could be my perception as its quieter and the muzzle break is contained in the can.

Lehigh makes great 194gr .308 bullets that will expand with the slower velocities. My accuracy wasn't great, like 1" at 50 yards with their factory loads in 300BLK.
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Old December 7th, 2017, 07:05 PM #18
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Yes a suppressor will reduce recoil. Beyond the extra weight, it reduces high velocity gases exiting in a rush from the barrel. Not as much reduction as a really good brake, but about on part of a mediocre brake. The upside is it makes it a LOT quieter, which any brake is going to make it LOUDER for the shooter and spectators.

My 2 cents would be an AR-10 with an 18” Barrel. I personally think 18” in a semi is a pretty ideal barrel length for a mix of lightweight, easy handling, increases muzzle velocity and reduced report/flash/blast. Now if you are using the suppressor for hunting as well, then I’d go 16”. The extra length and weight of one means you want to go as short as you reasonably can.

You mention 1000yds. Not sure you’ll get there with a 16” .308. I think you’d be wanting to look more like a 20”+ for that. I don’t recall the exact math/ballistics, but for a 175gr low drag .308 match round I think you are looking at about a 25fps loss per inch of barrel length. So a 16” .308 might go transonic around 900yds or so.

But I’d look for confirmation from someone else on that.

I want a 6.5CM at some point, but after I’ve built my .308 AR-10. I’ve got a Sako in .308 with a 23” Barrel to complement it. At some point I’ll probably get long and heavy barreled chassis gun in .308 as well. But I’ll probably build a 6.5CM AR-10 upper and get a bolt gun in 6.5CM first.

Now to really twist your noodle, it looks like some folks are starting to push .338 Federal for AR-10s. That would be interesting.
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Old December 7th, 2017, 07:16 PM #19
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6.5 for paper punching. .308 for deer, your not shooting deer at 1000m. I have both, .308 has a better "heavy" hunting bullet selection.
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Old December 7th, 2017, 07:25 PM #20
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Quote:
Originally Posted by DENWA View Post
I agree.

BUT the 6.5CM WAS the pro's cartridge just a few years ago now its on the outs...

http://precisionrifleblog.com/2017/0...-the-pros-use/
Gamers will always find every last percentage of a percentage advantage they can get, that's the game.
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