The majority of the sound and flash reduction occurs in the later parts of the can, the first baffle is just subjected to significant sandblasting.
Omitting an entire baffle in a can really doesn't make that huge of a change - comparing the OPS 15th and 14th cans there's only a 2-3dB difference, and those differ in volume AND one baffle.
You'll have grown tired of buying ammunition to run through the can long before you really worry about how the first baffle is faring. Firing schedule is going to have a lot more to do with that as well - very hot ductile metal will display that much faster than if you keep it relatively cool.
عندما تصبح الأسلحة محظورة, قد يملكون حظرون عندهم فقط
کله چی سلاح منع شوی دی، یوازي غلوونکۍ یی به درلود
Semper Fi
"Being able to do the basics, on demand, takes practice. " - Sinister
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