Hello i am having a gunsmith re-barrel my TRG-S (sako m995) to 338 lapua. It was bought from the factory as a 30-378 wby. Im sure there are a few guns like mine that have been converted to the 338 lapua. First question do i have to change the bolt or bolt face (new extractor pin or anything for that matter)? Also i read somewhere that the TRG-42 magazines will work with the TRG-S bottom metal (any truth to it). I have already ordered a bottom metal from mcmillan along with the A5 stock. If anyone has any information on doing this conversion i would appreciate it as I am using a qualified gunsmith but he has never done a custom gun from a TRG-S. I hope that there isn't any major problems but give it to me straight up i would rather know now before its all done and paid for. Can't wait to get this gun back! gun)