I have an old semi auto I inherited in 30-06. It happens to be a jam-o-matic A.K.A. remington 742. The gas system has been blocked making it essentially a manual semi-auto due to the common afliction these models are known for. My question is is it possible to convert this to .308 without too much fussin and cussin. It has a high sentimental value and still shoots true but I'm not that big a 30-06 fan, great bullet, just not my favorite. Just looking for some different opinions and suggestions.