Changing the choke on my old A-5. Well it just a bit on the full side, a 28" 12 Ga. browning that I don't want to cut and add anything to the barrell. Seems to me that I could emory clouth the inside of the first two inches to create a wider pattern. I don't need much because I'm hitting dove at 45 yards and missing them at 25. Any suggestions here? Likely a lot more complicated that I expect.