6.5 creedmoor

[dennishoddy]

The Creed will out perform the Grendel and you won't need a 28-30" barrel to do it. Bullets are a wash, both shoot high in the BC arena. A 22-24" AR10 in a 6.5 Creed will manage 2,700-2,850fps shooting 140gr hybrids. Run the ballistics, you're supersonic beyond 1,400yds.

Ok, I'm just throwing this out there for discussion.
If the 6.5 Creed will only run 2850 with a 140 grain, why not stick with the 30-06 shooting the same bullet at over 3000? Bolt gun, yes.

 

[HiredHand]

Ok, I'm just throwing this out there for discussion.
If the 6.5 Creed will only run 2850 with a 140 grain, why not stick with the 30-06 shooting the same bullet at over 3000? Bolt gun, yes.

I'm assuming the 6.5 bullet has a better BC than the 30 cal counterpart.

 

[Okie4570]

Here Dennis....... in 30-06, .270, 25-06 and .300 win mag.

http://onlylongrange.com/bn36-long-range-assassin-30-06/

 

[dennishoddy]

Here Dennis....... in 30-06, .270, 25-06 and .300 win mag.

http://onlylongrange.com/bn36-long-range-assassin-30-06/

Cool! I shot a .300 Win Mag Nemo at the range a couple of months ago. Felt like a weak .243 in recoil.

Hiredhand, I agree it could be the BC, of the smaller caliber bullet, but at the same time the 06 has higher velocity using that same weight.

When does velocity overcome BC in that scenario?

 

[Jcann]

Ok, I'm just throwing this out there for discussion.
If the 6.5 Creed will only run 2850 with a 140 grain, why not stick with the 30-06 shooting the same bullet at over 3000? Bolt gun, yes.

I'm not familiar with 30-06....do they make a 140gr for this chambering? If they do I'm sure the BC would suffer greatly. You would need to step up to a 200gr 30 cal bullet to match the 6.5 hybrid BC. I doubt you would achieve 3,000fps with a 30-06 shooting a 200gr bullet. Recoil would be greatly increased w/o a break and cost of shooting would increase as well. Personally I enjoy shooting my 260 w/140gr all day long compared to shooting my 7mm w/180gr bullets.

 

[Okie4570]

30-06 140gr BC .376 Nosler Custom 3000fps

Ballistic Coefficient 0.376 Velocity (ft/s) 3000 Weight (grains) 140
Maximum Range (yds) 1000 Interval (yds) 100 Drag Function G1
Sight Height (inches) 1.5 Shooting Angle (degrees) 0 Zero Range (yds) 100
Wind Speed (mph) 0 Wind Angle (degrees) 90 Altitude (ft) 0
Pressure (hg) 29.53 Temperature (F) 59 Humidity (%) 0.78
Ballistics Results
RANGE (YARDS) VELOCITY (FPS) ENERGY (FT.-LB.) TRAJECTORY (IN)
Muzzle 3000 2798 -1.5
100 2749
200 2512 1962 -3.1
300 2287 1626 -11.8
400 2074 1337 -27.1
500 1872 1090 -50.5
600 1685 882 -83.9
700 1513 711 -129.6
800 1359 574 -190.5
900 1228 469 -270.3
1000 1124 393 -373.4

Creedmoor 140gr BC .596 SMK 2850fps

Ballistic Coefficient 0.596 Velocity (ft/s) 2850 Weight (grains) 140
Maximum Range (yds) 1000 Interval (yds) 100 Drag Function G1
Sight Height (inches) 1.5 Shooting Angle (degrees) 0 Zero Range (yds) 100
Wind Speed (mph) 0 Wind Angle (degrees) 90 Altitude (ft) 0
Pressure (hg) 29.53 Temperature (F) 59 Humidity (%) 0.78
Ballistics Results
RANGE (YARDS) VELOCITY (FPS) ENERGY (FT.-LB.) TRAJECTORY (IN)
Muzzle 2850 2525 -1.5 0
100 2695 2258 0
200 2546 2015 -3.3
300 2402 1793 -12
400 2262 1591 -26.7
500 2127 1406 -48.2
600 1997 1239 -77.4
700 1871 1088 -115.3
800 1751 953 -163.2
900 1637 833 -222.4
1000 1529 727 -294.7

 

[dennishoddy]

Okie, you listed two different bullets, two different manufacturer's with two different BC's.

I know the BC's are going to change with the caliber/diameter.

What is the difference with both from the same bullet/manufacturer?

 

[Okie4570]

That was the highest BC .30 cal 140 I could find (I could only find 2 manufacturers of 140gr .30 cal, the other was a 30-30 soft tip clunker) , and not the highest 6.5 BC 140 I could find.

 

[dennishoddy]

I agree, there is not a 140 grain.
One needs to pick a bullet comparable to both.
.30 cal goes down to a 90 grain and up to 220 grain or higher in the Win Mag.

 

[dennishoddy]

I agree, there is not a 140 grain.
One needs to pick a bullet comparable to both.
.30 cal goes down to a 90 grain and up to 220 grain or higher in the Win Mag.