Is there anyone out there that does a mod. to a std. Win. Mod. 70 rifle to turn it from push feed to control feed? We have 2 338 Whisper Mod. 70's that SHOULD have been made on a control feed system but were not. The problem is they don't eject the brass, you have to pick it out each time. (It's because the case is to short.)Any help guy's?