There are no rules for length of pull. It shouldn't be too short or too long. How's that for helpful? In general, the straighter the grip the longer the LOP can be and still feel comfortable. How long a pad is on the gun now, if any? You could have a 0.6 pad put on with a LOP of 14.5" and have another 1" pad fitted. Shoot the gun with both pads and see which one you prefer. You can even switch pads depending on the seasons with the shorter one for late fall/winter when you have more clothes on.
If you are unsure of your exact dimensions and are having a new stock made have the gun stocked 1/8" to 1/4" high and 1/4" to 1/2" long and have the stock maker put just a couple coats of finish on. Shoot the gun for awhile and then start taking it down and/or shortening it and keep shooting. This is the ultimate way to get a custom stock made and is worth the time considering the financial investment. Different guns have different points of impact depending on barrel regulation, how they move under recoil and SxS with very light, long barrels can experience barrel flip. All of these things will affect the drop at face. Let us know what you decide and how it turns out.
Regards,
Jeff
