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Make sure you have LOTS of Insurance. You have no control over who or what firearm your ammunition will be used in, or the person who will use it.
Even big ammunition companies are wary in this respect. A case in point is the 8 mm. Mauser cartridge. Ammo compaines load very anemic loads for it, while in Europe, where the Cartridge is used more and understood, much more respectable loads are available. If you have a Model 98 Mauser with a .323 bore that is fine, but there are older Model 88 and some 8x57 Maauser hunting rifles with the older .318 bore, and a .323 bullet fired in a .318 bore will raise pressures considedrably.
Another case is the firearm used itself. The Model 98 Mauser again, was made in 7x57 Mauser and is a strong action, but there were also a lot of weaker Remington Rolling Block rifles made in the same 7x57 calibre.
I will show people how to reload, and supervise them when they start loading, but I will NOT load cartridges for anyone. Quite a while ago, an incident happened where a rifle blew up and killed a guy, and his Widow sued the guy who reloaded some ammo for him. He lost almost everything he had and would make for several years because he had no insurance and it was not a business. The loads were supposed to be on the conservative side but how do you prove in court that it was not your ammo that was faulty. BTW, that one actually happened quite a while ago.
Lets take another scenario. You load some conservative loads for your buddy, Joe. Joe goes home and mentions to his Wife what a great guy you are because you have loaded some free ammo for his Deer rifle. Later, Joe and his buddy Mike are sighting in their rifles for Deer Season. You load ammo conservatively, but Mike is known for his loads that not only blast the Deer, but Barbecue them on the spot also. So Mike, seeing that your loads are not up to his standards, offers to load some "real loads" for your rifle.
Next day, Joe and Mike are out in the woods, and have been sharing a pint of Old Stump Remover between them. Joe slips, the muzzle of his rifle hits the ground and six inches of mud are now in the bore. A bit later a Deer walks out, Joe aims and pulls the trigger, and the rifle, with it's bore obstruction, blows up in his face, and there is a fine Funeral. The Wife, knowing that you loaded the ammunition, but not about the ammo that Mike loaded, then sues you. How do you prove in Court that it was caused by Joe's own negligence in not clearing the bore obstruction, and the higher loaded ammo that Mike made. After all, Mike used your fired cases that were loaded by you originally and fired on the range before Deer season. Try to prove that one was not your fault.
BTW, that one actually happened quite a while ago.
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