One of the great things about Tikkas are that you do not need to bed them. The recoil lug design makes sure that the gun goes back into the stock the same way every time. That is the main purpose of bedding an action.
Stock manufacturers put aluminum blocks in their stocks to make up for poor craftsmanship. The block is designed to touch the sides of a round action (which the Tikka is flat sided) to align it inline with the barrel channel.
The B&C stock was not inline with the barrel channel and because the Tikka is flat sided, the inlet results in only half the contact with the recoil lug that there should be.
The Helmick, GRS, and XLR are a straight drop in stock that offer superb accuracy and ergonomics.