Dolls head Barrel VS No Dolls head

[NRA life member, Pope And Young Member]

In my search for a set of barrels for my DH 12 Ga I found a set from one of our members. The original had a real bad bulge just in front of both chambers. After sending them to Bachelder I was told they were not repairable. I spoke to Kerrington in Texas he said the same. The barrels arrived and I found out quickly not all 32" Damascus 1 frame barrels are alike. My original set has no dolls head or rib extension. I believe I'm calling this correctly, excuse my lack of terminology if I'm wrong. The set I just got has the dolls head. Can these be milled off and this set be used? I understand they will need to be fitted