Joesmoe
IMOKUR2
I have some made to measure ones for shooting - but they're bleedin' un-comfy inside a lid for some reason.
BINGO !
I had a set made a while back when a similar thread showed up, and learned something about my anatomy (actually, data show most people have no clue about their internals).
I have "prominent" ears. When I don a helmet, the ears are pressed back flat against my head. This (I didn't know) changes the internal dimensions of the external ear canal - sufficiently so that the custom molded earplugs no longer fit and are intolerably painful.
I too am an active shooter and at the range generally wear foam under muffs. The foam that seems to work best for me after many tries over the years are ones I encountered at work:
ULINE S-17902
A close second and readily available at the corner drug store as well as Walmart and Amazon, Office Depot, etc:
Howard Leight by Honeywell Leight Sleepers