Mike George
Chequering is defined by the number of lines per inch, and tools are available for cutting a wide range, generally from 16 to 32.

However, the most popular patterns tend to fall in the 22 to 28 range, which seems to give the best grip on a shotgun.

Remember that the fewer the lines the deeper the pattern has to be, otherwise you would get diamonds with very blunt points which would offer a very poor grip.

For a very elegant pattern, the very coarse and very fine patterns are best avoided.

Very coarse just looks crude, while very fine can hide the fine grain of the wood.

Also, chequering is of little use when it gets filled in with a mixture of sweat and dust, so keep it clean by brushing along the lines with something like a toothbrush – not a wire brush.