RE: 8MM Mauser project
If the barrel isn't too badly worn, you should be able to get decent accuracy with the 8mm- though it isn't going to happen with rem factory loads which are junk. You wil need to handload to get decent accuracy.
The metal parts that are silver, or 'in the white' as its usually referred to, is probably correct for your vz-24 especially the receiver and barrel.. Alot of Czech made mausers had blued parts, some did not.
Whe3n you put the rifle back together, make sure the barrel does not touch the sides of the barrel channel- its ok for the end of the barrel to touch the stock as it needs 5-10 lbs of upward pressure to shoot correctly. Make sure the front barrel band does NOT touch the barrel at all.