Thanks Tex, a can of wipeout, 50 sticks of new brass, and a kit of Tubbs 7mm bore slickers may be in order, would be a fun weekend project, that 220 Swift Varnminter I had was a rag holer with 55gr NBT's in calm conditions.
The Swifts are supposed to often be very accurate. The .22-250 in my avatar greatly benefitted from fire lapping!