Painless load development (mine)

[Formidilosus]

BR-4

Not that many failures. Maybe 1:100,000… or more.

Are you loctite your bolt handle is all the way down each shot?

Have you cleaned the bolt out and the firing pin off?

What are you using to seat the primers?

What cases? And did you trim them?

 

[lak2004]

What's the preferred primer seating device? I've got the frankford arsenal hand tool and have had some issues with seating depth and disfigured primers. Had 2 failed firings 2 years ago on a deer hunt. 3rd one was the charm and put the buck down thankfully, but would like to switch to something better.

 

[Matt5266]

I've only ever used a rcbs hand primer. Everything from 300 wsm down to 223 and all handgun calibers. Never had a single fail to fire in any of my reloads.

 

[9487329]

Are you loctite your bolt handle is all the way down each shot?

short answer no, but I’ve got the UM short w/ ball and I try to be cognizant of that, it’s definitely down when I recock it

Have you cleaned the bolt out and the firing pin off?

Doing that now

What are you using to seat the primers?

RCBS hand primer

What cases? And did you trim them?

Assorted reloaded factory:
Hornady frontier, black hills tmk, fiocchi .556, federal gmm, and some new starline

I did have to use a primer pocket hand tool to remove the crimp and open the pocket because the primers wouldn’t seat without it on some.

 

[Formidilosus]

short answer no, but I’ve got the UM short w/ ball and I try to be cognizant of that, it’s definitely down when I recock it

Ok. That is the most common reason for fail to fires.

Doing that now

Good.

RCBS hand primer

Good

Assorted reloaded factory:
Hornady frontier, black hills tmk, fiocchi .556, federal gmm, and some new starline

I would pick one good make and stick with it while you figure it out- stareline is fine.

I did have to use a primer pocket hand tool to remove the crimp and open the pocket because the primers wouldn’t seat without it on some.

Yep. I would stick with one type to narrow the issue down.

 

[Castle Rock]

Cases that are sized too much is a common issue