So I did some measuring on a few #4 Bh's I have and the following came out;
0's - .630, .633
1's - .641, .635, .628
2's - .633.5, .631.5, .636, .634 x 2
3's - .630, .633
So I did some measuring on a few #4 Bh's I have and the following came out;
0's - .630, .633
1's - .641, .635, .628
2's - .633.5, .631.5, .636, .634 x 2
3's - .630, .633