I have only been reloading since 1981. I have some other stories to learn from, but I will break them up on the thread to keep eyes from bleeding. I only have one bad story that involved me, and I intended to keep it that way.
Check flash holes for left over tumbler media. When you take them out of the tumbler LOOK to insure the flash holes are clear over white paper. I have the end of a dart I use for a pick, I also push the dart through the flash hole to CLEAR the flash hole even if it looks clear. Do not just look, clear the hole. I CHECK the flash holes again when I clean the primer pockets over white paper. I CHECK the primer pockets again over white paper prior to putting the primer in. The Story below is why.
About 1989 I was going to the range to shoot my 300 mag. I had an up coming Alaskan Hunt to prep for and I just wanted to shoot. It is good for the heart, mind and soul, keeps the confidence up. I was thinking I might as well take my 22-250 to shoot while I am waiting for my 300’s barrel to cool down. I didn’t have any 250 stuff loaded up so I hurried to load up a quick 10 rounds. I got out to the range to do my thing and it is interesting I shot 3 from the 300, 3 from the 250 alternating. I had shot the last set of 3 from the 250, I had the 10th round I pulled the trigger.
I immediately felt hot gas going just below my cheek, I looked at the rifle, the outside looked fine. I could not get the bolt opened. I was finally able to get the bolt open by tapping it open with a block of wood. The case was expanded in the face of the bolt and would not come out. I took the bolt out of the rifle to get the case out of the bolt face. Heck, it was screwed up anyway so I took a pair of vice grips and pulled the case out. The case had expanded so big it looked like you could put a primer in the flash hole.
What happened? Too much powder? Primer pocket loose? Something partially blocking the flash hole? Powder, I don’t think so, I could see that in a pistol using light loads, it was my standard load for my 250 the load could not have been doubled it would not fit in the case. Primer pocket loose, if the primer doesn’t feel solid going in I disregard the case. Flash hole, I did not recall checking when I grabbed the brass. At the time, I called Jay Postman over at RCBS and ran every thing by him and partially blocked flash hole could do it, so could a loose primer pocket and too much powder. I am thinking blocked flash hole.
I sent my rifle to Remington with the story. (I have had the rifle since 1981 with no problems.) They checked it out and replaced the bolt for a reasonable fee. I still have it, it will still keep three rounds touching at 102 yards shooting off the box of my pickup using a gun case for a pad.
Never be in a hurry reloading, check what you are doing, you will notice it becomes second nature. It is a healthy fear, this situation could have maimed or killed. Thank God for strong weapons. Paul