I just started using BH in my Optima Elite this year. I have only had one range session with it and only about 12 rounds. Shot well. Extremely good accuracy. I would probably do what others are doing and drill out the fire channel about every 10-12 rounds or so. I know after calling CVA that my breech plug has a flash hole diameter of only .027". I assume yours is the same. No hang fires that first session. As long as it performs in cold weather i'm extremely happy with BH. I was using regular WIN209 primers as they seal up good in my gun.