Questions for people who have such models and shoot them:
Did you shot high velocity 22 LR? How about Copper plated?
I did not shoot mine yet. I expect (hope) it will work fine with CCI Standard Velocity 40 gr. which are lead. But it would be super cool to also work with high velocity plated bullets. Is there a risk to damage the gun? Obviously I do not want to risk.
I stick to the standard velocity lead .22 LR, with or without the Olympic barrel. With the Olympic barrel it's sometimes a chore to seat the bullet into the rifling with the lead projectile as it is but cannot reason that standard velocity copper jacketed could hurt it.
I never ventured to try anything but the standard velocity .22LR simply because of the age and value. That goes for my 1891s right through to the Straightline (only fired it once) and even my pre-war K-22s.
I have one old 1949 ship date K22 that I and all my children and my grandson have put through it any type of .22 LR ammo including the higher power with no ill effects after 40+ years.
In my 41s and 46s only Standard Velocity for reliable function.
Don't listen to those who recommend you never clean a .22 LR barrel. I always clean my .22 LR barrels. Usually after 50 rounds a brass brush with Rem-oil (or equivalent) followed a few patches.