Always a good idea to lube your cases before trying to resize them. When it's really tough to get them in the die, stop pushing. Also, not a bad idea to buy/make a stuck case remover.
From a friend, don't get in a hurry when using a universal decapper and somehow get your finger between it and the ram thus running it through the nail on your pointer finger. You will say a lot of bad words and bleed all over your reloading stuff.
