One of the things I found is that lighting will drastically change the way casecolors appear. The pics below illustrate. Actually, the direct flash lighting shows them closer to reality than the bounced flash diffused lighting.





With other features of a gun, different lighting such that shadows are cast to detect texture, may be needed. Experimentation may reveal the best solution for a particular subject detail.



Figure of wood is particularly sensitive to lighting changes on how it appears in pics in my experience.