I was fortunate enough to inherit a Winchester 1886 Lightweight Takedown Rifle last Fall in .33 WCF and began reloading for it. I loaded up 45 grains of H4895 with a Hornady 200 Grain bullet which is pretty much an average load for this rifle. I noticed that after firing these cartridges, the primers seem to be partially blown out of the casing and slightly rounded in appearance. When I stand the cases up on their bases, they don't sit flat. Any ideas what might be causing this? Does this happen with other 1886s? Your help would be appreciated.
old thread but this is reloading basics 101...
whenver you see primers pushed out of spent brass, that means one thing, and one thing only- EXCESSIVE HEADSPACE. The locking mechanism is worn in the lever gun, not holding the bolt face against the case head tightly within spec. What happens then is, the primer pushes out of the shell, with the pressure of firing the round. The further out the primer is, the worse the headspace is.
whenever you buy a rifle, always take the time to look at the spent brass, if the previous owner has it, or ask if it pushes out primers. If it does, ask for money off the price of the gun, or look elsewhere. To fix it usually requires major surgery or parts replacement at the gunsmith. This may mean removing the barrel and rechambering it, and setting it back, and recutting the barrel threads.
in short, it's not a good sign. Pushed out primers can devalue a gun by 50% or more.