I’ve had two rifles this season from people I hunted with that locked up during wet snow and ice. Around half the times that I use or hunt with someone using a certain rifle system, their are issues with snow and ice.
It seems to be that the larger opening in the trigger guard and the mag well is allowing more water in the bottom side of the action. The factory stock and mag is pretty well sealed up.
Phenomenally. A properly built one with a real two stage trigger is by far the least effected/most reliable rifle system in adverse weather. With the ejection port cover closed it’s very sealed, and any ice/debris that gets in the trigger opening, a good two-stage will break/move out of the way . I’ll pour water on one tomorrow to show, but it doesn’t matter.