I have barrels in both those calibers. You will be surprised at the accuracy.
I had M.Bellm rework both of my barrels.
So far they shoot fantastic.
He put his integrated muzzle brake on the 30/30AI..
I kid you not... It has "zero" recoil..
And hits like the hammer of Thor.
The 7-30 barrel is outstanding.
I'm serious about getting a 23" 7mmTCU barrel ..
MGM has one.