@grandpamac do you have access to GRT or quickload and crunch the numbers with one of them?
Is your 8208 from older batches. Early on in it's introduction there was talk on US reloading forums that it had swings from batch to batch.
I have found it pretty consistent over maybe 3 years and 10 kilos.
I have been substituting 2206H for practice ammo and the difference in charge weights has remained around 1/2 grain (0.3 to 0.5 depending on bullet profile)
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