​​​​​​ Kind of an odd question. My wife regularly shoots a .270 without issue. But she's struggling with the recoil on a Mossberg 500 20 gauge. It's got a cantilever rifled barrel on it. No problem with the 270 but this just seems like too much. Probably more how the stock fits her than anything, but it's what we've got right now. She's a tiny thing.

I want her to be practicing with it to get used to how it functions, cycles, how the trigger feels, the safety, target acquisition, etc. Could I have her shoot some light Target loads through it to achieve this? Or is that not safe with a rifled barrel?

I've loaded and used snake shot out of .38s and
.44mag revolvers. But how about shot through a rifled slug barrel?
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-Jake