Just to show how strong a primer is or the one I shot was this is what happened to me week before last.
I was going to try some R-7 and 250 gr xtps in my savage muzzleloader,decided to try a short black haverster sabot with the xtp.
I pulled the trigger but didn't hear anything I guess because I wear inside my ear and muffs.I actually saw the bullet land about 15 ft in the grass,so I took out the breech plug to see what happened all of the powder was in the barrel not a single grian was spent and the sabot was still in the barrel.
The primer had went off blowing through the powder around the sabot and went 15 yds.
If I had been useing pyro or other sub it would have fired ok,I just couldn't get over how far that xtp had went.The sabot didn't have any burn marks on it at all and the xtp looked like one that just came out of the box.