Semorjh said:
All powders are the same?
Not all powders will yield the same number of rounds depending on the burn rate.
If you are looking to economize your pistol loads, note that faster burn rate powders will typically use 3.5-5.0 gr powder charges while moderate burn rate powders will use 4.0-5.5 gr and slower burn rate powders will use 6.0-8.0 gr.
Another thing to consider is accuracy. While I can use mid-to-high range load data with faster/moderate burn rate powders (Bullseye/Promo/Red Dot/Clays/Titegroup/W231/HP-38/Universal etc.) and still obtain accurate target loads that burn fairly clean, I need to use high-to-near max load data with slower burn rate powders (HS-6, WSF, AutoComp, Blue Dot etc.) to obtain accurate full-power loads that burn clean (at mid-to-high range load data, these powders will burn dirty).
Here are some examples of how many rounds you can get from a pound of powder depending on the burn rate:
45ACP 200 gr SWC:
W231/HP-38 - 5.0 gr charge will yield
1400 rounds
WST - 4.8 gr charge will yield
1458 rounds
Promo/Red Dot - 4.0 gr charge will yield
1750 rounds
9mm 125 gr RN:
Blue Dot - 8.0 gr charge will yield
865 rounds
Power Pistol - 6.5 gr charge will yield
1076 rounds
WSF/AutoComp - 5.2 gr charge will yield
1346 rounds
Universal - 4.7 gr charge will yield
1489 rounds
W231/HP-38 - 4.4 gr charge will yield
1590 rounds
W231/HP-38 - 4.0 gr charge will yield
1750 rounds
Promo/Red Dot - 4.0 gr charge will yield
1750 rounds
Clays - 3.6 gr charge will
1944 rounds