rimfire. A recent incident re-enforced my usual practice of not firing other peoples reloads (unless I know them well and have witnesed them load).
My son recently bought a "TON" of reloaded ammo, primers, powder and equipment from the family of a man that was being moved to a nursing home. The ammo consisted of both rifle and pistol of many different calibers. The ammo looked great...........
He had also recently purchased a Savage model 99 in .243 and deceided it would be a good back-up deer gun. We took it to the range to zero it and as he was firing I thought it sounded awful loud, and seened to have a bit of kick to it. I didn't look at the spent cases until after he had one split in half leaving the front half stuck in the chamber. I then picked up a couple of the spent cases and took a look at them. All seemed to have a mark on the case at about the same spot as the one the seperated. All of the primers were blown out where the firing pin struck them, and all were backed out and flattened.
With the stuck case we stopped shooting and took the gun and spent cases to the local smith the following day. He removed the case, checked the gun out and gave it a good bill of health. He looked at the cases, and determined the problem was in the reloads. That afternoon we checked the boxes, they were marked with the load and bullet, we then pulled a couple of bullets and tried to compare the powed to a KNOWN specimen. It didn't seem to match. We then poured the powder on the scale and found it to be almost double what was written on the box. We pulled all the bullets, dumped the powder and reloaded with a load I have used for years, everything functioned perfect afterwards.
Since you don't like the bullet weight for hunting, I would pull the bullets, dump the powder, recharge, load a bullet of my choice in them and press on.
A tale I heard at a gun show a few years ago, some folks were double charging, mixing powders, etc, giving the bullets away, or placing them where some unsuspecting person might think they found some "good" ammo. After hearing this I deceided that I would not put anything in my gun if I didn't know the person loading and how experienced they were. It never hurts to lean to the safe side...........