I will check everthing out and play with the bolt torque and barrel shims. Thank for the good advice!Maybe too much tension on the lug bolt ? Did you remove material from under the barrel/lug and now you are distorting the barrel when you tighten it?
Maybe try loosening the stock/lug bolt and sliding a shim at various spots under the barrel and test firing - see what happens. You could be getting excessive barrel resonance since a large portion of the barrel is now completely unsupported, although this sounds unlikely in a .22 LR. If it's not an overtightened barrel/stock bolt you may actually need to glass bed. I have an old MArlin 70P (Papoose with detachable barrel) and the entire barrel is unsuported from the muzzle to where it screws into the receiver - it's very accurate as long as I don't rest the barrel on anything while I shoot it.
I would have to agree with RL357 - How you floated it would make a lot of the difference. Can you give us a run down of what you did?I free floated the barrel on my CZ 452 Varmint .22 cal. rifle all the way back to the barrel lug but, now can't seem to get as good of groups as I could before? anyone have any ideas what could cause this? and maybe some solutions? Thanks!