From what I've read and experienced, you want to wipe off any oil finish after about 15 minutes. Wipe on, let sit for 15 minutes, wipe off. Let it dry overnight, repeat. Now tru-oil may cure faster, but I'm pretty sure you still want to wipe it off after 15 minutes, otherwise, its going to go on way too thick and not dry properly.
Before I started using oil finishes on guitars, I researched what gun owners do to their stocks, and the information is similar to, if not the same as what I presented above. Do the research anyway.
Here's some food for thought:
http://www.findarticles.com/p/articles/mi_...002/ai_n8892269
Another good resource is about doing a hand rubbed poly finish:
http://www.frettech.com/info.html
Another great set of articles on sealing, pore-filling, and finishing a gun stock with oil based products:
http://riflestocks.tripod.com/seal.html