22fowl said:
Cook off -accidental discharge
Soft wood pegs - less pressure during accidental discharge
Releaf plug on primer..less pressure on accidental discharge
Does this help?
Build them tight enough and parts of your body will be rearranged....not funny!
Rick use steel..just not on mine....thank you!
Relief?
We simply keep sparks out of our powder because we know that black powder and sparks should not mix until shooting a shot. Even then, we put our stoppers back in the horns without fail. We are smart enough to know that we want neither a firebomb nor grenade under our armpits. Prevention of sparks reaching the powder is the best practice.
As to why we have preferences in the construction of powderhorns, the interest involves reproducing correct horns to accompany our correct guns and equipment. These vary greatly based upon the time and location of the original manufacturer. The butt retention methods vary from 3 simple iron nails (a bit of religious imagery) on an Adams County horn to 5 iron nails common to a Lehigh County horn. Brass tacks, wooden pegs or even locust thorns were used for other types of horns in other areas. The fact is that with a bit of study, you can learn a whole lot about the correct architecture and be correct in your presentation. Some people travel long distances and spend a lot of money to view and study original horns so as to get such details correctly documented and presented. But I guess such attention to detail makes us "steel pin police"...
If you are worried about sparks, the iron pins which I use are quite soft and I have not been able to strike a spark with that little wire.
As to your assertion that a few nails will make a bit of difference if a spark sets off the powder in a horn - you are misguided. The result will be catastrophic regardless of a few nails - either way. Most of the nails go into a rather thin bit of the plug rim and are not all that secure. Insignificant in the event of the powder being lit.
But fool yourself if it pleases you.
If you are so worried, why not put cosmetic nails to preserve the look. If shallow, they will not make the butt plug hold too tightly - even for your tastes.
But then the question comes - how did your horner actually secure the butt? Wax, epoxy, glue, toothpicks...? You likely have the grenade that you so greatly fear in spite of removing the nails.
Have you tested the bursting strength of your particular horn to see if your butt plug is fitted too tightly. Likely the weakest point is the wall of the horn itself.
Apparently, you prefer a firebomb rather than an explosive device?
How about this - keep your stopper in place...