Update -
I disassembled the bolt completely - no oil or grime present but I ran it through the cleaner anyway.
I inspected and unpinned the trigger assembly and ran the entire assembly through the cleaner and it left a nasty brown/yellow film in the solution. The exterior appeared clean upon removal but I noted damage to the bolt stop, but should not have caused the issue that I experienced.
I lubed firing pin assembly and trigger assembly with lighter fluid only.
I reassembled and froze the entire barreled action overnight.
This morning everything functions as intended.
I assume the trigger assembly was freezing allowing the trigger to hang and not engage the sear.
I will be replacing the trigger assembly with something else this spring.
I disassembled the bolt completely - no oil or grime present but I ran it through the cleaner anyway.
I inspected and unpinned the trigger assembly and ran the entire assembly through the cleaner and it left a nasty brown/yellow film in the solution. The exterior appeared clean upon removal but I noted damage to the bolt stop, but should not have caused the issue that I experienced.
I lubed firing pin assembly and trigger assembly with lighter fluid only.
I reassembled and froze the entire barreled action overnight.
This morning everything functions as intended.
I assume the trigger assembly was freezing allowing the trigger to hang and not engage the sear.
I will be replacing the trigger assembly with something else this spring.