I'm thinking I would like to get a barrel for my NEF (H&R) .410. I'm not really sure which one yet...maybe the .223 bull barrel? It would be just for fun, so I was wondering how accurate they are? I've read where some said they can't get good groups with theirs and others say theirs shoot under 1" easy. I think I have read where Marlin builds their barrels??? Anyone here with first hand experience? I think it would be a cheap way to mix it up. I'm thinking a .44 mag. barrel sounds good too.