Sorry for the delayed response on getting my velocities posted for the load development for my 26 Nosler. I actually went out to the range a couple times previously, but was having a difficult time getting my LabRadar to read with the suppressor I was using. So, I went ahead and bought the air rifle adapter for the LabRadar and it worked flawlessly.
As a reminder, my best loads consisted of 77.0 grains of Retumbo, Nosler brass, CCI 250 primers, and the Berger 156 EOLs. I found two OALs (measuring from the ogive) that my rifle seemed to really like. The first was 2.814 and the second was 2.754. So, I actually tested velocity for both of those. Here's the results from a 5 string group measured with the LabRadar:
2.814 OAL: 1st shot 3220; 2nd shot 3223; 3rd shot 3227; 4th shot 3222; 5th shot 3227. Average speed = 3,223.8 fps with an ES of 7 fps.
2.754 OAL: 1st shot 3205; 2nd shot 3212; 3rd shot 3208; 4th shot 3214; 5th shot 3209. Average speed = 3,209.6 fps with an ES of 9 fps.
As I suspected I'm running about 160 fps (OAL of 2.754) and 180 fps (OAL of 2.814) faster than what Berger suggested as the max velocity with this combo.
Again, I hope this information is useful.
