I have spoken to several people at McMillan that said they work fine with no bedding. The military issue sniper rifles are not bedded. I think when they are used for competition then they do bed them.
I checked accuracy before and after on a feather weight edge stock and if there is a difference then I can't shoot well enough to tell.
I wished I had checked out repeatability when the action is removed before and after but I didn't. I think bedding will increase the consistency but haven't proved it.
Either pillars or solid glass and a torque wrench could improve repeatable point of impact, but I would always check it after each swap.
"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli
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