I am in the process of gathering parts for 2 spanish mauser builds. I picked up 2 complete actions on GB for a smokin deal. I know that these pre 98 action are not as strong as 98 large rings. I am looking for advice on caliber selection. I'm wanting to build a pair of tactical/varmint rifles for me and my wife. I'm looking at a 6mm remington barrel for one, and either a 243 or 308 barrel for the other. Both actions are in great shape and have no flaws or damage that I can see. Would these actions safely handle it? If all else fails and I cannot safely use a modern caliber, I have no problem barreling them for either 8mm or 7mm mauser, as I can always handload for accuracy. Thanks in advance for any advice given.