Just realized you are using CCI200's. You should be OK, but I have had some issues with H414 and CCI200's in the past in other cartridges. Specifically hang fires in colder weather.
It's interesting you mention that; I've burned a lot of H414 in the 7mm-08 with 140s and CCI 200s and never had the trouble you cite, even in deep cold (-20� F and colder) temps. Those were always loads that filled the case well however.
(My usual loads in the 6mm I used quite a bit years ago were 100s propelled by H4831.)
