Say I have a SxS shotgun that that shoots rifled slugs accurately from both barrels at say 40-50 yards. What accuracy would one expect from the same gun with rifled sleeves inserted into the barrels? I don’t know if this would be like comparing apples to apples or not. I would like to find. (or make) some .577 BPE barrel tubes or sleeves. I don’t want to go the rifle building route at this point in my life, but this sounds like a great experiment or project.