I put a 16 ounce mercury recoil reducer in my Marlin Guide Gun and would highly recommend them. Honestly, I don't know if it's just the extra weight or if the mercury actually does some good, but whatever... It cuts the recoil considerably. By the way, I call this rifle my "Lil' Thumper", because it'll thump on both ends. :shock:
Upon taking off the factory recoil pad (if you can call it that), I found that there was no hole at all in the back end of the stock, so had to drill out a 1" hole for the 7/8" diameter recoil reducer. When I got the hole deep enough, I dropped in the reducer & poured epoxy mix around it to glue in place.
Of course these reducers come in different weights, lengths, and diameters.
Robert in the hills of NC