The only thing one may need to do that they normally wouldn't with the T/C speed breech, is use a mag primer in extreme cold. other than that just regular cleaning of the BP, this is all that is necessary for proper ignition in all weather conditions.I will also say while vent liners and such are nice features, for the vast majority of people using M/L rifles there not necessary and i don't think you will see the various M/L companys rushing to ad this feature.especially since they make additional revenue from selling new ones.again i commend Knight for what there doing with the new Bp's and i hope they continue on this positive path, especially since IMHO they have made some serious mistakes since there reopening.if i were in the market for a high end rifle it would be the Knight mountaineer, not a Encore or high end CVA.Ray