Thanks, I remember Pat posting a couple years ago that R17 fizzled when it got real cold.

Maybe some lots are more temp sensitive than others?


I tested both H4350 and R17 this past December.

H4350 lost about 100fps(243 Win) and R17 lost about 200fps(300 WSM).

(going from -20F rifles/ammo to warmed up rifles and 125F ammo that I heated on the defrost)


10F-80F there isn't much of an issue/velocity loss but obviously losing 100-200fps is going to really screw up cold weather LR shooting.



Hijack over.



Pat, that setup could really be handy for dog hunting around here!

Last edited by SamOlson; 04/11/14.