i used birchwood casey walnut gun stock stain on 2 and whikses own brand mahogany stain on the other 2. when i stained them i left them for 24 hours before i did anything else with them as the stain dried back lighter. when the tru oil went on it changed colour completely, it went darker. and because the stocks where really dry the tru oil soaked in surprisingly well (all where beech stocks) I'm no expert but its just things i noticed as i did them all recently. they came up suprisingly well like this.