You will not blow up an eight gauge with that load. The Herco will give somewhat better ignition in light loads in the eight than Blue Dot because of its faster burn. Blue Dot is a bit slower burning than Herco and will give very low pressures with light shot loads in the eight. It is very hard to find 2 7/8" ten gauge loads in powder company loading manuals. Sometimes you just have to bite the bullet and invent your own. The eight gauge loads are even harder to find. Unfortunately, Sherman Bell used a lot of obscure components in his recommended loads. I would rather stick to the Alliant powders that I have used for fifty years rather than go shopping for boutique powders that are hard to find and expensive.
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