I have just purchased a thunderbeast 30ba and was looking for a hunting rifle to attach it to. i was thinking of buying a r700 and chopping it down to 16 inches for a really short brush gun? after talking to my brother which has been on this site for awhile he says that will be pushing a 308 too slow. what say you all? by the way hello! been looking for a year or more, decided to many questions i need to ask so i signed up.