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No Benchmark 8208. Found it will give around 2700fps from a couple of 16" barrels with 150gr bullets. St Marks ball powders aren't well known or temp stability across extremes. Eg developing a load in winter, then getting pressure signs in summer and vice versa. I personally haven't loaded with them enough to observe it myself, prefer to stick to ADI where I can.
Ah ok I'm with ya now. I was thinking you were indicating my 2206H load would swing a lot summer to winter, something I have never noticed.
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