Re: unconventional loads and jeager rifles
If you have a jeager, such loads will ruin the rifling.
If you have a smoothbore, such loads may or may not work
The problem with chain and other such items is that they can catch on the least scratch of the bore, and become an obstruction themselves. Soft malleable lead shot can be "swaged" past such situations by the pressure of the charge. Other metals in chains are not so forgiving.
I'd save such loads for those who are willing to risk suicide for internet fame.
I have experimented with some lead loads, ie stacking 45 caliber lead discs as a load in a cap and ball revolver. It came out like a dozen tiny lead frisbees. But three considerations. 1) low pressures in a revolver, 2) lead was still the projectile and 3) if such a load hung up in the bore, the pressure could dissipate through the gap between the cylinder and the barrel.