rcmark,
please forgive me.. respectfully, I mean respectfully,
seems you just offer a 455 in .22lr, no speak of iron sights used, or other used.. I have no optics on my 455 in .22lr.. I shoot at 25yds.. and its awesome.. haven't really tried any 50yd targets yet. but Holy crap.. what ever your using... a .22lr at 100yds.. pretty dang nice shooting.. even awesome.. not sure why your questioning bedding or not..
but, others here will chime in 'who ' really know 100yd shooting.. me, its just from on OMG almost on my foot to 30ish yds, open sights, vermin.. love mine.. wouldn't change a thing..
but long range shooting is a different animal!
peace CZ bro!
k in MI