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6.5 CM and 6mm Creedmoor

spudgun

Over the winter I want to start with a new caliber. I have been shooting 6.5 CM for about 2 years now and have just about mastered it with the reloads and gun at 600 yds.

Looking to start out the new year with a different caliber for 600 yds.

Was thinking about 6mm but don't know if it should be Creedmoor, BR or another platform.

I know a lot of my members shoot 6mm for competition. Is the 6mm a better performing caliber than the 6.5 CM?

What barrel twist and bullet weight it most people shooting in the 6mm calibers?

I am not a competition shooter but want to start low end. Thinking of rebarreling my Savage 12 F/V into a different caliber.

Any suggestions?
 
a 6 creedmoor , with a 110 Sierra MK. 40.0-41.0 of H4350 will get you around 3000 FPS. you will need 1-7 twist for that bullet.
a 6mm Dasher, with 105-108 bullets and 32.5 of Varget will have you around 2950 in a 1-8 26" barrel.
I like the Creed with the 110 bullet. has a BC of .617 over 2600 fps.
 
Better how? It shoots a little flatter and a little less recoil if not using a brake but for accuracy both can be very accurate. I use a 28" 7.7 twist barrel in my 6 Creed and shoot 108 ELD-M and working up a load for the 110 A Tips now.

If you aren't a competition shooter and just want something different then go with a 6 Creed. You can size down your 6.5 brass if you wanted and if you have a bushing FL die for the 6.5 you can just get a smaller bushing for the 6mm. But don't expect anything any more extraordinary than your 6.5 for accuracy.
 
Rob01 said:
Better how? It shoots a little flatter and a little less recoil if not using a brake but for accuracy both can be very accurate. I use a 28" 7.7 twist barrel in my 6 Creed and shoot 108 ELD-M and working up a load for the 110 A Tips now.

If you aren't a competition shooter and just want something different then go with a 6 Creed. You can size down your 6.5 brass if you wanted and if you have a bushing FL die for the 6.5 you can just get a smaller bushing for the 6mm. But don't expect anything any more extraordinary than your 6.5 for accuracy.
Click to expand...

I have one member that shoots a 6mm CM with a Ruger precision. I must admit he is getting 3 to 4" groups with factory ammo. My 6.5 CM I'm at .5 MOA with my reloads and 140 Match bullets.

Either thinking of re barreling my 6.5 factory with a custom barrel or 6mm CM but not sure which way to go.
 
3-4" groups? There is something wrong with that rifle. LOL

Either one you go with the custom barrel will make it better than a factory barrel.
 
My buddy and me have had this discussion, I have a .264 krieger blank already. Wanting to build for local matches

My thoughts- 6.5x47 , because it would be a new caliber to me and the inherent accuracy.

His thoughts- 6.5creedmoor, because I already have everything I need to load for it, i know the round, no need to purchase more brass n dies. And its Accurate!
 
Let me be honest, i have shot 6.5 creedmoor for years and built a 6bra two years ago. Also shoot a .284, and i shoot competition. I am gonna tell ya that ur gonna pick up some extra x’s with the bra but not a huge advantage, i would recommend that u swap out barrels on ur current rifle to 6mm before buying an entire rig, especially if ur lovin the 6.5. Btw, i just shot a 599-40x at ben avery phoenix last week 600yd, fopen, nra league match, all on 6.5 creedmoor. Shoot Well!
 
As Rob01 states, he's run and competed with both. I've shot both.
The 6 will shoot a faster and a little flatter with less drift than the 6.5 if you push it.
You can use most of the same dies and powder. The Sierra 110's shoot flat out great,
if you find the right combo. If you don't want to play that game, the Sierra 107's and
RL16 are an easy comb to make shoot well. Your barrel life will suffer with the 6 compared to
the 6.5
You can run a 7.5 twist and it will shoot any of the heavies fine.
The 6br straight will give up 100-200 fps (depending on bullet) but will give great barrel life.
Peterson has come out with 6x47 brass. An excellent case. Slightly
less powder than the 6 creed, but almost the same speed and a little better
barrel life.
You could chose the 6GT, 6 Dasher or 6XC All have factory brass now if you
don't want to mess with sizing or forming.
You can run anything from 95g to 115g bullets in a 6mm and shoot small groups out to 600yds.
 
Ranger188 said:
As Rob01 states, he's run and competed with both. I've shot both.
The 6 will shoot a faster and a little flatter with less drift than the 6.5 if you push it.
You can use most of the same dies and powder. The Sierra 110's shoot flat out great,
if you find the right combo. If you don't want to play that game, the Sierra 107's and
RL16 are an easy comb to make shoot well. Your barrel life will suffer with the 6 compared to
the 6.5
You can run a 7.5 twist and it will shoot any of the heavies fine.
The 6br straight will give up 100-200 fps (depending on bullet) but will give great barrel life.
Peterson has come out with 6x47 brass. An excellent case. Slightly
less powder than the 6 creed, but almost the same speed and a little better
barrel life.
You could chose the 6GT, 6 Dasher or 6XC All have factory brass now if you
don't want to mess with sizing or forming.
You can run anything from 95g to 115g bullets in a 6mm and shoot small groups out to 600yds.
Click to expand...


Thanks.

At this point it is no fun shooting my 6.5 CM, Savage 12 F/V factory.

I go out shoot 10 rounds and hit all steel and end up with .5 MOA or less on paper.

Yes, I know .5 MOA is nothing to brag about but hell I only got $400 in the rifle (less the PST II scope).

Either I rebarrel back in 6.5 CM or go another caliber.

I'm sure I could do better than .5 MOA with a good barrel

Was looking for another challenge.

Now with that said don't get me started on my 224 Valkyrie... That's another challenge..
 
Maybe you should start competing. It will bring a different viewpoint to your rifle now and give you a change without changing the rifle.
 
Why is it no fun to shoot? Are you bored?
If that's to easy, then buy a 3 inch plate and try to hit that at 600yds. 10 out of 10 times.
Or find a range that goes to 1000 or more. Not so easy anymore.
As Rob says, start competing, when you have a bunch of people watching you
and you have a time limit, plus funky positions, suddenly get's a lot harder.
Won't be boring or easy for long.
 
when I get bored with the accuracy of a rifle I like to up the ante... I started off with hanging golf balls at 250 yards... found that was too easy so I started hanging water bottle caps at 250.... got pretty good at hitting them so I moved to 1/4 minute targets at 430 yards... and my next step will be bottle caps at 430... havnt tried that yet...lol bordom turns into having to be focused at the task at hand...
 
If you have a rifle that shoots great... change up the position that your shooting. Can you shoot bottle caps at 250 off in a seated position? Using a monopod/bipod? What about standing off of a barrel? It is boring to lay prone and shoot steel. Quick shot practice, 300-500-800-1000 in 12 seconds?

I guess if the rifle is too accurate, change the way you practice to make it more fun. When the barrel wears out change it up.
 
Ranger188 said:
Why is it no fun to shoot? Are you bored?
If that's to easy, then buy a 3 inch plate and try to hit that at 600yds. 10 out of 10 times.
Or find a range that goes to 1000 or more. Not so easy anymore.
As Rob says, start competing, when you have a bunch of people watching you
and you have a time limit, plus funky positions, suddenly get's a lot harder.
Won't be boring or easy for long.
Click to expand...

Well, it took me 18 months to hit that 3" steel at 600 yds.

I have been trying to hit it at every Monday night shoot. Hit it the first time 2 months ago.

At this time i only have 1 range around me that goes to 1500 yds.

The back log for enrollment is about 2 yrs and you need a sponsor.

Please don't get me wrong, I still love to shoot. That's why I build a 224 Valk and have been getting it tuned in for about 8 months now.

I guess I posted this thread to get info on which bullet was more accurate 6.5 or 6mm.

I see a lot of competitors shooting 6mm at the meets.
 
Bc'z said:
My buddy and me have had this discussion, I have a .264 krieger blank already. Wanting to build for local matches

My thoughts- 6.5x47 , because it would be a new caliber to me and the inherent accuracy.

His thoughts- 6.5creedmoor, because I already have everything I need to load for it, i know the round, no need to purchase more brass n dies. And its Accurate!
Click to expand...

I think you'd be VERY hard-pressed to shoot the difference between the two; but I would agree the x47 probably has a slight edge in terms of 'inherent accuracy'. How much is probably pretty minimal though; especially with the quality CM brass offerings these days. With a good smith and a Krieger blank, I bet you end up with a 'stupid' accurate 6.5CM or 6.5x47.

If I already had the dies/accessories for the CM, I'd stay there. I've owned and seen many CMs do well at mid-range. I'd shoot the 140 Hybrids (maybe try the new 144s too) behind H4350 or RL16.

The only downside I've found to the Creedmoors is having to tell people you're shooting a Creedmoor.
 
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