I'm an avid hunter/shooter and I've been reading enough around here to have a head full of idea's about what rifle I want to build and in what caliber. But I also have a few questions. 1) Is a switch barrel rifle practical for me? I hunt coyotes from Dec- Sept. In November I hunt deer. And from May-Aug I shoot 1000 yard target events once a month (just for fun, not competitively) I would like to build a rifle with 3 barrels, which I don't think would be too inconvenient because I would only put the "deer barrel" on (and leave it on) for the month of Nov. All winter I could keep the "coyote" barrel on. And in Summer I might swap back and forth between "coyote" and "target" once a month. 2) What is the quickest, safest, most repeatable way to switch barrels, & will it eventually cause harm to the rifle? 3) I'm thinking of going 243 WSM for coyote, 7mm SAUM for target, and 300 RUM for deer. I believe they share a common case head size. But if I wanted to use case heads of different size, say 300 Allen Express instead of 300 RUM would that be achievable without a large hastle or expense? 4) What repeater action, bottom metal, and clip should I start looking at? 5) Is an integrated recoil lug proven to be much more effective than a pinned recoil lug? ... My gut tells me to go integrated because one piece has to have advantages, but I do see SO many high end actions using pinned lugs that it makes me wonder.