Because this gun is nitro proofed I would use 2.75" 20 gauge ammo with 7/8 ounce of shot. I would avoid magnum loads at all costs to protect the wood. It has been shown time and time again that chamber pressures are not much more when going from 2.5" to 2.75". If you can obtain 2.5" shells and afford them then great. If not, 2.75" will work fine.


"As for me and my house we will shoot Damascus!"