Never did a flat top checkering stock. Touched up a few and was careful not to convert them to pointed top be accident. I once made a fore end for a 1100 with pointed checkering that was 28 lines per inch. Felt great. Was a absolute nightmare to do. Swore then, and have kept that vow, to never do another one again that fine. Worse was the pattern covered the entire fore end, with only the flats on the top of the fore end not checkered. About three times the normal pattern because this was an over sized for end. Remember seeing a Sauer double which have 32 line per inch checkering and know that must have been even worse.