I just picked up a Savage-Stevens 200 in .223 at Cabelas, I intend to use it as a base for a highly accurate target/varmint rifle by replacing pretty much everything but the action over a period of months. I have some questions: -What is the action screw spacing on a short action Stevens 200? -How would I go about installing a new heavy barrel? (and where to buy one) -Trigger recommendations? -How do I know if the rifle is staggered feed or centerfeed? Many thanks. A range report (with pictures) on the unmodified rifle is to come, I expect it to be fairly accurate out of the box.