You can see back in 1983 that they were very close to the same burn rate. 1983 was a much simpler time.
1983 Burn Rate Chart

1 Norma R-1
2 Bullseye
3 Winchester 231
4 Hercules Red Dot
5 IMR Hi-Skor 700-X
6 Hercules Green Dot
7 IMR SR-7625
8 Hercules Unigue
9 IMR SR-4756
10 Alcan AL-5
11 Hodgdon HS-5
12 Alcan AL-7
13 Hodgdon HS-6
14 Winchester 540
15 Hercules Herco
16 Hercules Blue Dot
17 Alcan AL-8
18 Hodgdon HS-7
19 Winchester 630
20 Hercules 2400
21 Norma R-123
22 Hodgdon H-110
23 Winchester 296
24 Du Pont IMR SR-4759
25 Du Pont IMR-4227

26 Hodgdon H-4227
27 Winchester 680
28 Norma N-200
29 Du Pont IMR-4198
30 Hodgdon H4198
31 Hercules Reloder 7
32 Du Pont IMR-3031
33 Norma N-201
34 Hodgdon H-322
35 Winchester 748
36 Hodgdon BL-C(2)
37 Hodgdon H-335
38 Du Pont IMR-4895
39 Hodgdon H-4895
40 Du Pont IMR-4064
41 Norma N-202
42 Du Pont IMR-4320
43 Hodgdon H-380
44 Winchester 760
45 Hodgdon H-414
46 Hodgdon H-205
47 Du Pont IMR-4350
48 Norma N-204
49 Du Pont IMR-4831
50 Hodgdon H-450
51 Hodgdon H-4831
52 Winchester 785
53 Norma MRP
54 Hodgdon H-870

Last edited by MickinColo; 11/12/22.