Norma 203B
- Thread starter madderg
- Start date
No. I have used it in both 22-250 (50 gr bullets) and .308 (155 gr bullets). It is essentially identical to RL-15, but not quite according to the mfr. Apparently minor differences in chemistry/deterrent coatings. Loads for the same velocity were equivalent (in my rifles, maybe not someone elses). The 203B seemed a little less sooty cleaning the barrels.
I can find RL-15 locally, 203B is a bit harder to come by.
In any event, treat it as a different powder than RL-15, close but not quite. It may act a little different at max charges and who likes surprises.
I can find RL-15 locally, 203B is a bit harder to come by.
In any event, treat it as a different powder than RL-15, close but not quite. It may act a little different at max charges and who likes surprises.
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