On Steve Peters ebay listings, he makes the comment that a compass will not work with the stainless steel material in the stainless butt caps for the Model 18.
From a listing,
"MODEL #18 STAINLESS STEEL CAP WITH FLAT TOP AND KNURLED SIDES (A COMPASS WILL NOT WORK IN THIS MATERIAL)"
I do see compass's sold in stainless steel cases and got to wondering about this.
Has anyone used a compass in a stainless butt cap on the 18 and noticed a problem with accuracy?