6.5 Creedmoor 30" Barrel 140gr Berger 2209 Velocity

[ECKY]

Does anyone know what sort of velocity you can expect from a 6.5 creedmoor with a 30" barrel running 140gr Berger Hybrids with 2209. Lapua srp brass. Does 2800-2850ft/sec sound about right or would you expect more velocity from a 30" barrel compared to a 26" barrel. Do you get to a point where the extra barrel length does nothing or becomes irrelevant. I can't find much online about this topic. Keen to see what velocity others are getting from a 30" barrel with a similar projectile/powder combination.

[GuyLuke]

Here's what QuikLOAD says. Take these results as indicative not actual.

Both at max pressure loads. 43.81gn 2209

32" - 3006 fps
31" - 2988 fps
30" - 2969 fps
29" - 2951 fps
28" - 2931 fps
27" - 2910 fps
26" - 2888 fps
25" - 2865 fps
24" - 2840 fps

Approx 20 fps increase per inch.

[ECKY]

Here's what QuikLOAD says. Take these results as indicative not actual.

Both at max pressure loads. 43.81gn 2209

32" - 3006 fps
31" - 2988 fps
30" - 2969 fps
29" - 2951 fps
28" - 2931 fps
27" - 2910 fps
26" - 2888 fps
25" - 2865 fps
24" - 2840 fps

Approx 20 fps increase per inch.

Thanks for the information. Will wind her up a bit.

[Benm77]

I'm running a 26" bartlein, 140gr eldm, lapua srp. Fed 205gmm 41.9gr 2209 and getting around 2950fps. I certainly wouldn't like to load with a 43gr charge behind a 140gr, that's way too hot.

[ECKY]

I'm running a 26" bartlein, 140gr eldm, lapua srp. Fed 205gmm 41.9gr 2209 and getting around 2950fps. I certainly wouldn't like to load with a 43gr charge behind a 140gr, that's way too hot.

I'm at 40.6gr at the moment. Velocity is around 2810 with a 30 inch barrel running 140s and 2209.

[cheech]

Here's what QuikLOAD says. Take these results as indicative not actual.

Both at max pressure loads. 43.81gn 2209

32" - 3006 fps
31" - 2988 fps
30" - 2969 fps
29" - 2951 fps
28" - 2931 fps
27" - 2910 fps
26" - 2888 fps
25" - 2865 fps
24" - 2840 fps

Approx 20 fps increase per inch.

Thanks for the information. Will wind her up a bit.

I’d be very careful exploring velocities based on this , I am only going by my experience using 2209 with 260 and 260 AI (23yrs) and 308 FTR with heavies . I’ve used a ton of 2209 and lately batches exist considerable variation of burn rates , some of my loads need nearly a full grain charge /change either way to maintain developed load velocities
So please becareful out there speed isn’t everything comes at a price if you change any one component retest to make sure it won’t spike pressure
Now find that load
Cheers

[BATattack]

Yeah agreed with Cheech. Recently changed batches and found the new batch was 80fps faster. Fortunately I was running on a low node so it didn't cause any safety issues.

[ECKY]

I agree. Biggest mistake I made when starting reloading was buying 500 gram and 1kg bottles of powder. Different batches always resulted in different velocities with the same load.
I'm looking at or around 2850-2900ft/sec just to buck the wind a little more without shortening my brass life.