What gets me in all these discussions is the lack of mentioning accuracy (specified by group size for number of shots at what distance). For about 15 years now, all any one cares about powder is how "clean" they are.
Here is ONE burn rate chart (they all vary as they are also effected by specific test conducted and lot number variations):
2. Vihta Vuori N310
3. Hodgdon Titewad
4. Accurate Nitro 100
5. Alliant Bullseye
6. Accurate Solo 1000
7. Scot Red Diamond
8. Alliant Red Dot
9. Alliant Promo
10. Hodgdon Titegroup
11. Accurate No. 2
12. Alliant American Select
13. Winchester AA Plus
14. Hodgdon Clays
15. Vihta Vuori N320
16. Ramshot Competition
17. Scot Royal D
18. Winchester WST
19. Hodgdon HP38
20. Winchester 452AA
21. Scot 453
22. Winchester 231
23. Ramshot Zip
24. IMR 700X
25. Alliant Green Dot
26. Hodgdon International Clays
27. Vihta Vuori N330
28. IMR PB
29. Accurate No. 5
30. Scot Pearl
31. Winchester 473AA
32. Hodgdon HS-5
33. Winchester WSL
34. Alliant Unique
35. Hodgdon Univ. Clays
Note: HP38 and 230 have ALWAYS been exactly the same powder.