Last weekend while I was at the field I noticed that the field paint was so small that it was actually double feeding past my plastic barrel nubbin on my large bore mag twist-lock barrels that are .689-.690. I switched up to a stock RT barrel, that had twin barrel nubbins instead of one like the aftermarket barrels, and it didn't happen as much.
Is there a way to make a plastic nubbin larger? I thought about adding a drop of crazy glue to the nubbin tip, letting it dry, then sanding it down to the appropriate size. What do you think?