Ryan j , have you looked into a replacement barrel for your Auto 5?
Years ago, my buddy bought a minty on in a ''Light''configuration.
It came with a 30 inch barrel full choke and non vent ribbed barrel.
Back before the advent of the internet we had catalogues from Brownelles , US Calvary , Cabelas and such.
We found a Hastings Barrel for inexpensive $$ and was available South of the border.
Yes, long before the Restrictions now in place, but they still make Hastings Barrels with chokes for Browning Auto 5's.
Sorry for the long winded post, but there is a possible less expensive or cost effective option some do not entertain.
Rob