This may not be the best place to get this info but I'll give it a go. Is anyone familiar with the 1910 Serbian or Costa Rican Mauser rifles? I was reading Smith's Book of Rifles where he says that this Mauser's bolt "completely enclosed the cartridge head." I can't find these rifles mentioned in de Haas and Google has failed to produce a photo or description of the bolt head. I was just wondering if anyone knew anything about the difference between these actions and they '98 Mauser?