Going to be real iffy as the "P" stocks already have very slim flat sided forends on them. Unfortunately I don't have a photo of my old 110PEL looking down from the top over the barrel/forearm to verify, but I don't recall their being much extra material there to work with. A quick Google image search seems to confirm my memory as it doesn't look like there's much thickness at the tip of the barrel channel.



This particular stock pattern (Weatherby or also called a California Sporter) was very popular in the 50's and 60's and is specifically designed for shooting off-hand which isn't really ideal with a heavy barrel due to the added weight out in front. Like most sporter style hunting stocks it has too much drop at the toe for shooting off bags and/or a rest.