6.5x47 lapua velocity change with temp

[backdoorsally]

Looking for opinions

6.5x 47 lapua
123gr scenar
N540
Max load 39.7gr max velocity 2976
My load at 10deg C
36gr 2806
37gr 2899
28gr 2972

With the 37gr load, what will my velocity be at 34deg C

 

[rugbydave]

There's no real way to predict exactly what your velocity will be at 34C based only on having 1 data point at 10C. You can probably google search temp variations with n540 in 6.5x47L and get a ballpark idea of what the temp modifier is but it won't be bang on. Whatever temp modifier you'll find will be linear anyways and the temp related velocity increase isn't really linear. Just shoot it in 34C and chrono it, then you'll know...

 

[MartyK2500]

That’s what I loved about Varget and am hoping H4350 does the same,
Varget in my case, varies by 1-1.5 FPS per 10F
From 90F to 30F it’s quite the temperature change and will vary less than most people’s ES