Inquiring minds want to know. Again, Google comes to the rescue. I would guess that since point lengths are entered on line G of the B&C scoring sheet, it became convention to refer to them as G1, G2, etc. See item 4 below:
How to Score Your Whitetail
There are several ways of scoring a Whitetail's rack. But by far the most widely recognized and used is the
Boone and Crocket method. Whitetails taken with archery equipment are scored by Pope and Young.
Either case the same scoring system is used. There are two categories Typical and Non-typical. Listed
below are the minimum scores to be recognized by these clubs for the all-time book.
Boone and Crockett Club
· Typical minimum score =170
· Non-Typical minimum score=195
Pope and Young Club
· Typical minimum score=125
· Non-Typical minimum score=155
1) The inside spread is taken perpendicular to the axis of the head at the widest point between the main beams. Credit for this measurement cannot exceed the length of the longest main beam. If the spread is greater than the longest main beam then only the length of the longest main beam can be entered toward the spread credit. Place this measurement in line D, column 1. If the spread was greater than the longest main beam, place the difference in line D, column 4.
2) Take the length of all irregular points that measure one inch or greater. This is measured from the end of the point along the outer edge to where it intersects the main beam or where it comes off of another point. The total of all points place in line E, column 4 for typical and line E, column1 for Non-Typical.
3) Measure the outside length of each main beam. Enter measurements on line F, columns 2&3. Enter the difference on line F, column 4.
4) Take the length of each regular point and its corresponding on the other main beam enter measurements on line G, columns 2&3. Enter the difference on line G, column 4. Repeat measurements for each regular point and enter in the appropriate space.
5) Take the circumference of the antler at the smallest point between the burr and the first point. Enter
measurements on line H, column 2&3. Enter the difference on line H, Column 4. Repeat measurements for each circumference and enter appropriate space. If the fourth point is not present, take the measurement half way between the third point and the end of the main beam. Regardless of the number of points per main beam, only four circumference measurements may be entered per main beam