Good catchIt's HP 38.
Mine are 2.5 grains different.H414 = WW760
Different lot numbers, they varied a lot with thoseMine are 2.5 grains different.
Yes and 4 years apart. But not what I'd call interchangeable with that much difference.Different lot numbers, they varied a lot with those
I am probably the last person here that should be giving advice on powder safety with the crazy things we do with powders in our test guns. I do however have to put out a warning to you that in the old days we used to say some powders were considered "interchangeable" or "the same". That is NOT the case!My question is which powders are actually the same or considered the same such as W 231 = HP 28,
W 296 = H 110 etc.
I remember some years back Hodgdon's MSDS showed the powder equivalents.
I've heard you can use a faster powders load for a slower powder if the slower powder is less than six spot slower in the chart.