Bore Guide Q for AR's

I now have a 6.5G ar. I have a standard ar15 bore guide for a 223/5.56.
Do i need something else or can I just use my existing ar15 bore guide?

I do know up to 6mm the 223 works especially the JP bore guide but 25 caliber and up I have a 6.5 AR bore guide

if its plastic, you can enlarge the exit hole