Inertia guns respond well to polishing, deburring and smoothing. My Benellis (except for the M3) have shot 7/8oz skeet and trap loads without a hitch, the smoothest being Centro Supersport that has polished internals from the factory. And they don't mind the heaviest 2oz magnums either, anything goes. During corona lockdown I took my time and did a full action job on a Stoeger M2000, pretty much the crudest, cheapest Benelli-style inertia shotgun there is, and results were nothing short of amazing. A gun that kept jamming even with 1oz high speed sporting loads started cycling 7/8oz reduced recoil loads 100% reliably, and it didn't take much to make its rough action butter smooth. Quite a bit smoother than any factory Benelli (this side of Centro SS) I've encountered.
A similar action job on an already nice Montefeltro would make a more or less ideal all-round shotgun in my book. Polishing a turd for the heck of it is fun, improving a quality gun to perfection is at the next level.