If they sold the rifle with just 2 barrels, say a set with .22 and .177, then another set with .25 and .22, it would get round the power issue by setting the power to the larger cal and allowing the smaller to be less.

They could then serial number each barrel to the gun. Anyone would then have to break 12 ft/lbs by changing to a bigger cal to get more power by changing the barrel.

If you’ve gone that far, then you deserve what’s coming, and it would be the equivalent of putting in an Ox spring in the old days. You’ll know what you’ve done wasn’t accidental.

I would buy one with .22/.177 combo set up like this. With open sights anyway.

Also Sterling would control the barrels availability by serial number, and therefore the power on rifles in circulation.