Will it darken my stock, or my leather?
On wood it deepens the color the way a wet rag does while it's on, then settles back as it buffs. On leather it's the same: no dye, no permanent shade change like the heavy conditioners. Test the inside of the forend, or the back of a sling, and look at it dry.
Will it leave the stock or the leather tacky, or attract dust?
No. Wipe it on thin, wait ten minutes, buff until nothing comes off on your hand. What's left is a dry wax finish, not a film. Tackiness only comes from putting on too much and not buffing it off.
Will it fill or soften the checkering?
Not if you keep it thin. Use almost nothing over checkering, or tape it off. Heavy oil is what fills the points. A thin wipe of wax doesn't.
Can I use it over an oil finish? Over Tru-Oil, varnish, lacquer, or shellac?
Yes. It goes on top of the finish you have and doesn't strip, sand, or stain it. On a shellac milsurp stock, clean first and test a hidden spot, since old shellac is soft.
My stock is sticky, grimy, or greasy from a foam case or old cosmoline. Will it fix that?
Clean first, then feed. A buildup wipe or a rag with mineral spirits takes off case-foam residue and grime. Cosmoline has to come out of the wood before anything goes in; the salve won't pull grease. Once the stock is clean and dry, yes.
Does it work on synthetic or laminate stocks?
Laminate, yes; it's wood under a finish. Synthetic, no. Plastic has nothing to feed. Save the jar for the sling.
What about the metal: bluing, the buttplate, rust?
If it gets on steel, wipe it off. It's plant oil and wax, nothing that attacks bluing. It doesn't remove or prevent rust; that's steel wool and gun oil, same as always. And don't store a damp sling on the gun.
Does it fix cracks or gouges?
No. A crack needs glue, a gouge needs filler. This is for the finish and the leather. If it needs a gunsmith, it still needs a gunsmith.
Will it lower the value of an original-finish rifle?
It doesn't strip, sand, stain, or add a hard finish, so the original finish is still the original finish. Collectors should still test the inside of the forend and go thin.
How is this different from boiled linseed, Tru-Oil, or Kramer's? And what about rain?
Linseed feels right but never fully dries and barely seals against water. Tru-Oil dries hard and glossy and looks like plastic on an old gun. Kramer's wants a week of daily coats. This wipes on, buffs dry in ten minutes, and the wax helps water bead instead of soaking in. It's not a polyurethane seal; wipe the gun down after a wet day like you would anyway.
Why pay this when linseed is five dollars a quart?
Because the quart is still in your garage, half full, and the stock is still grey. Linseed never dries, Tru-Oil goes plastic, and a refinish is $600 and six weeks. One jar does every wood stock and every piece of leather you own, and if it doesn't bring them back, you get the money back.
Will it soften a shooting sling or a holster too much, or rot the stitching?
A light coat conditions without collapsing the shape; if it has to stay stiff, use less and wipe off what's left. A carry sling that's gone hard can take more and sit overnight. And no petroleum means no rotted stitching; petroleum products and neatsfoot compound are what eat linen thread.
How often do I apply it, and how much does one rifle take?
Once before season, once after. More if it lives in the truck. A fingertip does a stock; a jar does the safe.