My reccomendation is to find a club and/or a big ml shooting event and observe what others are using. Ask questions. If your budget allows go for a custom built rifle. The factory mades always come with issues that need addressing. Plus they barely qualify as 'traditional'. And, yes, ml rifles are dirty to shoot and use. You are going backwards in the timeline of firearms development. Do not expect them to be the same as a modern rifle.
Going from a fancy new model car to a horse comes with 'dirty' issues also.