I wouldn't overthink the throating issue, it will fit it your magazine and shoot basically the same velocity regardless.
+1. The 2.762" will not take any noticeable volume over a 2.8" on powder capacity and the 2.762" will allow you to chase the lands a little more.
John
If my people, who are called by my name, will humble themselves and pray and seek my face and turn from their wicked ways, then I will hear from heaven, and I will forgive their sin and will heal their land. 2 Chronicles 7:14
