Rifles are best with a non-glossy finish because the reflection can cause problems while hunting and be distracting target shooting. And oil, although not as hard and weatherproof as poly, does look much better, deeper, and gives the wood a rich glow Poly can't duplicate. And oil is much more easily repaired if it gets scratched. 8 to 10 layers is pretty minimal. I spend a couple - 3 weeks, every day wiping a coat on and then off again after 20 minutes or so.
For another thing, a good filler undercoat is mandatory with oil, makes it look much better. You can use BLO or tung and sand with 400 grit or finer, wipe, repeat, or use the 'Lemon Meringue Finish" that uses lemon juice and egg white. I've got it somewhere and will post when I find it.
I swear by Jupiter Optimus Maximus .... in the army of the consul Lucius Quinctius Cincinnatus and for 10 miles around it I will not steal anything worth more than a sestertius in any one day.