I shoot tons of Damascus guns and they operate fine. Further, the data recorded in DGJ indicates that English best quality Damascus met or exceeded fluid steel equals of age, wall thickness and quality.

Rst shells are great, as are the even better B&P sub sounds.

The one area I disregard is that I never shoot black powder. Even in non-nitro proofed guns, low pressure smokeless is preferred for consistency, low pressure, reduced recoil, etc.

I find the inverse is the problem with vintage guns; that being that non-Damascus guns are not treated with respect. Shooting modern high pressure loads through vintage fluid steel guns is an often ignored hazard.