RE: CVA Accura
UC, Its more than likely an alloy to keep weight down.
Apply some Flitz to the frame and theres no worrying about stains. Used it on my nickel optima and anything that gets on, wipes right off. Lasts for 6 months i believe.
Great looking rifle! I handled the Electra with the bergara barrel and i really liked what i saw.
As for tip welding, i wouldnt attempt it on the barrel lug. Obviously they seem to think it doesnt need the welding and i agree. The tc omega i had wasnt welded either, they were screwed in.
Shoot it in factory form and once you get a load shooting great, then you can go a head and tinker with the smaller things that you think could be improved.
Welding on a rifle is something i wouldnt do.