rifles in 6.5 Creedmore?

I just picked up a Remington t 700 Varmint ADL to build up. It’s got the 26” Varmint barrel. Using some Hornady American Gunner 140 grain factory loads I was getting 2700+ FPS. I can see 3000 being plausible.
 
It takes all of 30 seconds to go to the Weatherby website and look at the specifications for a mkv or vanguard to see it's a 1-8 twist.

They only make the rifles though, right? What would they know when wikipedia says otherwise.



Ooo. This close.
https: //en.m.wikipedia.org/wiki/6.5-300_Weatherby_Magnum

And ew. It’s belted.
 
Tokay444 SAYS :

You can hit 3200 fps with ease in a 6.5 CM case with a 120 gr bullet. 3000 is 147gr speeds in 6.5CM.
It really isn't though. Just an efficient case.

WOW ! How long a Barrel ? What Powder and Primer ? What Case ? RJ

3-sierra-bullets-6-5-creedmoor-data.png




Barrel Length: 24”
Twist: 1-8’’
Case: Hornady
Trim-to Length: 1.910’’
Primer: Winchester WLR

I was curious and just googled it..
 
according to QUICKLOAD, desk top drag strip. a 147 grain eldm with 45 grains of rl17 @ 2.8" coal 6.5 the phantom hornady creedmoor:
45 grain rl17
75k psi
2942 fps
100.7% case fill.
24" barrel

45.5 grains rl17
77k psi
2970 fps
102% case capacity
24" barrel

26 inch barrel
45.5 grains rl17
77k psi
102%
3013 fps

real world... i have run up to 43 grains rl17 in a slower barrel factory rem trying to get to 2800 which i nearly did with the 147 eldm in 6.5 creedmoor
with no pressure signs
but 42 gr rl 17 was what i settled on in my current rifle it was accurate so i didnt need to push it to get the velocity(2800)
 
RL26 and a good long seating depth and you'll get there. Try that with a 260 remmy and OOPS you're out of magazine length.
There's no magic to it. Short and fat cases are more efficient than long skinny ones of the same volume.

See that's the part I don't get. I can understand efficient case,etc, but why push it to what many would consider "beyond its limit? Just buy a 6.5x55 or a 264 WM.

I like the 308 because it's a nice shooting round and efficient. I don't try to load it to 30-06 velocities or more. If I want that, I'll use a 30-06 or 300 WinMag.
Same goes for 223. If I need more speed, I'll just use a 22-250.
 
I've owned 5 different Creedmoors, still have two. Settled on a heavy one and a light one, a Sako Roughtech Range and a Christensen Mesa.

So there were 3 of them out there for sale from me alone.

Nothing really special about it. Just a 6.5 round a little shorter than a 260. Fits a 2.80" mag box with long bullets a bit better than the 260.
They all work.
 
Here's 47.8grs RL26 under the 147gr ELD loaded to 2.926" OAL in my 20" 6.5cm

Code:
[TABLE="width: 1088"]
[TR]
[TD]Stats - Average[/TD]
[TD="align: right"]2747.65[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stats - Highest[/TD]
[TD="align: right"]2757.89[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stats - Lowest[/TD]
[TD="align: right"]2740.72[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stats - Ext. Spread[/TD]
[TD="align: right"]17.16[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stats - Std. Dev[/TD]
[TD="align: right"]9.05[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Shot ID[/TD]
[TD]V0[/TD]
[TD]V50[/TD]
[TD]V100[/TD]
[TD]V150[/TD]
[TD]V200[/TD]
[TD]V250[/TD]
[TD]Ke0[/TD]
[TD]Ke50[/TD]
[TD]Ke100[/TD]
[TD]Ke150[/TD]
[TD]Ke200[/TD]
[TD]Ke250[/TD]
[TD]PF50[/TD]
[TD]Proj. Weight[/TD]
[TD]Date[/TD]
[TD]Time[/TD]
[/TR]
[TR]
[TD="align: right"]1[/TD]
[TD="align: right"]2758[/TD]
[TD="align: right"]2682[/TD]
[TD="align: right"]2615[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]2482[/TD]
[TD="align: right"]2346[/TD]
[TD="align: right"]2231[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]394.25[/TD]
[TD="align: right"]147[/TD]
[TD="align: right"]1/09/19[/TD]
[TD="align: right"]14:22:57[/TD]
[/TR]
[TR]
[TD="align: right"]2[/TD]
[TD="align: right"]2744[/TD]
[TD="align: right"]2669[/TD]
[TD="align: right"]2608[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]2457[/TD]
[TD="align: right"]2324[/TD]
[TD="align: right"]2219[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]392.34[/TD]
[TD="align: right"]147[/TD]
[TD="align: right"]1/09/19[/TD]
[TD="align: right"]14:23:53[/TD]
[/TR]
[TR]
[TD="align: right"]3[/TD]
[TD="align: right"]2741[/TD]
[TD="align: right"]2663[/TD]
[TD="align: right"]2579[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]2451[/TD]
[TD="align: right"]2314[/TD]
[TD="align: right"]2171[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]391.46[/TD]
[TD="align: right"]147[/TD]
[TD="align: right"]1/09/19[/TD]
[TD="align: right"]14:24:08[/TD]
[/TR]
[/TABLE]

@ 35 fps per inch, you could expect a 26" rifle to do approx 2958 fps. This wasn't a dangerous load in my rifle. Brass was Lapua too which is shy on capacity compared to Hornady. Temperature was -4c when I radar'd that load


I've settled on 46.8grs RL26 which gives 2715 fps, here's a string from a few weeks ago @ +14c

Code:
[TABLE="width: 1088"]
[TR]
[TD]Stats - Average[/TD]
[TD="align: right"]2715.34[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stats - Highest[/TD]
[TD="align: right"]2727.92[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stats - Lowest[/TD]
[TD="align: right"]2699.71[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stats - Ext. Spread[/TD]
[TD="align: right"]28.21[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Stats - Std. Dev[/TD]
[TD="align: right"]8.37[/TD]
[TD]fps[/TD]
[TD="colspan: 2"][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Shot ID[/TD]
[TD]V0[/TD]
[TD]V50[/TD]
[TD]V100[/TD]
[TD]V150[/TD]
[TD]V200[/TD]
[TD]V250[/TD]
[TD]Ke0[/TD]
[TD]Ke50[/TD]
[TD]Ke100[/TD]
[TD]Ke150[/TD]
[TD]Ke200[/TD]
[TD]Ke250[/TD]
[TD]PF50[/TD]
[TD]Proj. Weight[/TD]
[TD]Date[/TD]
[TD]Time[/TD]
[/TR]
[TR]
[TD="align: right"]1[/TD]
[TD="align: right"]2728[/TD]
[TD="align: right"]2668[/TD]
[TD="align: right"]2611[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]2428[/TD]
[TD="align: right"]2322[/TD]
[TD="align: right"]2224[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]392.2[/TD]
[TD="align: right"]147[/TD]
[TD="align: right"]5/19/19[/TD]
[TD="align: right"]9:02:52[/TD]
[/TR]
[TR]
[TD="align: right"]2[/TD]
[TD="align: right"]2726[/TD]
[TD="align: right"]2659[/TD]
[TD="align: right"]2595[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]2424[/TD]
[TD="align: right"]2308[/TD]
[TD="align: right"]2197[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]390.87[/TD]
[TD="align: right"]147[/TD]
[TD="align: right"]5/19/19[/TD]
[TD="align: right"]9:03:11[/TD]
[/TR]
[TR]
[TD="align: right"]3[/TD]
[TD="align: right"]2719[/TD]
[TD="align: right"]2656[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]2522[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]2412[/TD]
[TD="align: right"]2301[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]2076[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]390.43[/TD]
[TD="align: right"]147[/TD]
[TD="align: right"]5/19/19[/TD]
[TD="align: right"]9:03:35[/TD]
[/TR]
[TR]
[TD="align: right"]4[/TD]
[TD="align: right"]2710[/TD]
[TD="align: right"]2649[/TD]
[TD="align: right"]2585[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]2397[/TD]
[TD="align: right"]2289[/TD]
[TD="align: right"]2180[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]389.4[/TD]
[TD="align: right"]147[/TD]
[TD="align: right"]5/19/19[/TD]
[TD="align: right"]9:03:52[/TD]
[/TR]
[TR]
[TD="align: right"]5[/TD]
[TD="align: right"]2719[/TD]
[TD="align: right"]2654[/TD]
[TD="align: right"]2590[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]2412[/TD]
[TD="align: right"]2299[/TD]
[TD="align: right"]2189[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]390.14[/TD]
[TD="align: right"]147[/TD]
[TD="align: right"]5/19/19[/TD]
[TD="align: right"]9:04:10[/TD]
[/TR]
[TR]
[TD="align: right"]6[/TD]
[TD="align: right"]2710[/TD]
[TD="align: right"]2647[/TD]
[TD="align: right"]2582[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]2397[/TD]
[TD="align: right"]2285[/TD]
[TD="align: right"]2176[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]389.11[/TD]
[TD="align: right"]147[/TD]
[TD="align: right"]5/19/19[/TD]
[TD="align: right"]9:04:29[/TD]
[/TR]
[TR]
[TD="align: right"]7[/TD]
[TD="align: right"]2700[/TD]
[TD="align: right"]2635[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]2378[/TD]
[TD="align: right"]2265[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]387.35[/TD]
[TD="align: right"]147[/TD]
[TD="align: right"]5/19/19[/TD]
[TD="align: right"]9:04:45[/TD]
[/TR]
[TR]
[TD="align: right"]8[/TD]
[TD="align: right"]2709[/TD]
[TD="align: right"]2645[/TD]
[TD="align: right"]2583[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]2394[/TD]
[TD="align: right"]2282[/TD]
[TD="align: right"]2177[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]388.82[/TD]
[TD="align: right"]147[/TD]
[TD="align: right"]5/19/19[/TD]
[TD="align: right"]9:04:58[/TD]
[/TR]
[TR]
[TD="align: right"]9[/TD]
[TD="align: right"]2716[/TD]
[TD="align: right"]2648[/TD]
[TD="align: right"]2582[/TD]
[TD="align: right"]2535[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]2407[/TD]
[TD="align: right"]2289[/TD]
[TD="align: right"]2175[/TD]
[TD="align: right"]2096[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]389.26[/TD]
[TD="align: right"]147[/TD]
[TD="align: right"]5/19/19[/TD]
[TD="align: right"]9:05:14[/TD]
[/TR]
[TR]
[TD="align: right"]10[/TD]
[TD="align: right"]2716[/TD]
[TD="align: right"]2647[/TD]
[TD="align: right"]2584[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]2407[/TD]
[TD="align: right"]2287[/TD]
[TD="align: right"]2179[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]389.11[/TD]
[TD="align: right"]147[/TD]
[TD="align: right"]5/19/19[/TD]
[TD="align: right"]9:05:34[/TD]
[/TR]
[/TABLE]


With a G7 BC of .315 (G1 .617), from the 20" barrel the 2715 fps MV load doesn't dip below 1350 fps impact speed until 1200 yards. A 26" barrel would push that to 1330Y. To compare, the long standard 175gr SMK Gold Medal load from a 308 would carry 1350 fps to 850Y and dishes out more recoil in the process. Wind deflection is 50% more with the 308
 
Last edited:
@ 35 fps per inch, you could expect a 26" rifle to do approx 2958 fps. This wasn't a dangerous load in my rifle. Brass was Lapua too which is shy on capacity compared to Hornady. Temperature was -4c when I radar'd that load

35 fps per inch is possibly another creedmoor exaggeration based on this article. Suggest 14-20 fps per inch.
https ://rifleshooter.com/2016/02/6-5-creedmoor-effect-of-barrel-length-on-velocity-cutting-up-a-creedmoor/
 
just punched it up and Quickload says 27-28 fps per inch with H4350 / RL26

The 2019 update to the article you linked to shows 23 fps per inch average from 26" to 20" across the six differnt loads tested
 
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