Thanks you all for "learnin'" me on scope tubes; as always very informative. I need some additional guideance, this time on scope bases/rings and maybe some of the other new members can learn something too. I hear the brand names of many different scope base/rings that are used and I am unfamilier with many of them. The question I have is: Is a Redfeild style (dovetail twist and windage screws) base and rings worthy of a long range rig or should I invest in a different style. It will be going on a 300RUM, Rem700 doner action, being built right now. If it isn't up to par what recomendations do you have for a newbie. Price is a consideration but not a deal breaker for "useable" quality. Thanks for your help and wisdom.