Correct. Back in 2009, before some of the specificity requirements were dropped, I assembled the following table of equivalents from various manufacturer MSDS sheets. The current MSDS sheets no longer include the equivalent name information. For that reason, unfortunately, newer powders aren't possible to include without begging the distributors for the information, which they sometimes will and sometimes won't give.
The gas gun pressure limits was a good point to bring up. Meeting SAAMI standards means not exceeding an average maximum pressure (called Maximum Average Pressure, which I think causes some confusion) and meeting velocities for common bullet weights that are ±90 fps of SAAMI's velocity numbers for them. A powder that won't do both at the same time does not match the SAAMI standard. The military, however has not only an average maximum pressure but a tighter ±30 fps velocity for specific bullets, as fired from a test barrel (individual guns vary a good bit more), plus a gas port pressure window must be stayed within at a standard distance down the barrel. So the military spec is tighter.
Code:
Powders from 2009 MSDS sheets (some newer MSDS sheets lack the powder name information due to
changes in MSDS requirement regulations).
Note that bulk grade versions have wider burn rate specs and can vary significantly from the
canister grades, which are controlled for burn rate by blending with held back fast or slow
lots, as needed to adjust them to within ±3% of their nominal burn rates.
Canister | Bulk Grade | Canister | Canister | Canister |
Grade | | Grade | Grade | Grade |
| St. Marks | | | |
Hodgdon | Mil & OEM | Winchester | Thales | IMR |
___________________|__Numbers___|________________________|__(ADI)___|______________________|_
| | | | |
HP-38--------------|-- OBP231 --|- 231 ------------------|----------|----------------------|-
| OBP124 | AALite (WFL) | | |
Titewad | OBP132 | | | |
Tightgroup --------|-- OBP242 --|------------------------|----------|----------------------|-
| OBP465 | Super-Handicap (WSH) | | |
Longshot | OBP473 | | | |
Lil' Gun ----------|-- OBP516 --|------------------------|----------|----------------------|-
Hybrid 100V | SHP771 | | | |
| SMP224 | AutoComp | | |
-------------------|--- WAA90 --|- WST ------------------|----------|----------------------|-
H110 | WC296 | 296 | | |
HS-6 | WC540 | 540 | | |
HS-7 | WC571 | 571 | | |
-------------------|--- WC748 --|- 748 ------------------|----------|----------------------|-
H414 | WC760 | 760 | | |
H335 | WC844 | | | |
BL-C(2)------------|--- WC846 --|------------------------|----------|----------------------|-
H380 | WC852 | | | |
US869 | WC869 | | | |
-------------------|-- WMR780 --|- Supreme 780 ----------|----------|----------------------|-
| WXC170 | WSF | | |
Clays | | | AS30N | |
International Clays|------------|------------------------|- AS50N --|----------------------|-
Universal Clays | | | AP70N | |
H4227 | | | AR2205 |IMR 4227 second source|
H4198 -------------|------------|------------------------|- AR2207 -|----------------------|-
| | | BM1 | |
H322 | | | AR2219 | |
Benchmark | | | BM2 | |
-------------------|------------|------------------------|- AR2210 -|- IMR 8208 XBR -------|-
H4895 | | | AR2206H | |
Varget | | | AR2208 | |
H4350 -------------|------------|------------------------|- AR2209 -|----------------------|-
H4831 | | | AR2213 | |
H4831SC | | | AR2213SC | |
H1000 -------------|------------|------------------------|- AR2217 -|----------------------|-
Retumbo | | | AR2225 | |
H50BMG | | | AR2218 | |
-------------------|------------|------------------------|- AR2215 -|IMR 4198 second source|
| | | AS25BP |IMR Trail Boss |