223 cratering primers

**Dave Hoback** · 11-02-2022, 07:25 PM

If you look at the picture, it represents the firing pin in the bolt head hole. The tip radius is represented by how obtuse the round face is. Imagine it was much more pointy. You see how much slop there would be on the sides? The radius should not drop into the hole at full pin protrusion.

You’ve likely seen this, but again this is my bolt with the firing I machined. You can see clearly how the radius does not drop below the bolt face surface. And that is at around .035” or a bit less. That is where it should be, .035”. Not .025”.

**KMW1954** · 11-02-2022, 10:15 PM

Thanks guys for the responses.
Dave thanks for the clear picture and no I have not seen it before. Now looking at that picture the pin in this bolt(mine) is protruding much greater that that. Looking at my pin through a magnifying glass the radius looks pretty good. Will have to pull the bolt apart and try to get measurements.

celltech do you recall what his fee was? Turnaround time?

Was supposed to be using this rifle in a winter league come Jan.

Whynot I understand the whole pressure issue and that it can happen with less than max charges and can even happen in very light charges. As stated I fired this load before in my Model 10 and was the load I used last winter in out league.
I do have the go-no go gauges just reluctant to try and swap just the bolt in the receivers because of being "worn-in". I would rather swap barrels. But that is just me and my thinking.

**Dave Hoback** · 11-02-2022, 10:33 PM

I don’t believe it’s overpressure or soft primers… you don’t have to measure anything apart KMW. You said already measured the pin protrusion at like .556” right. So you have your baseline. Just file the pin very slowly to .035” or so. And just use your eye to set the radius. Think of it as just rounding the Face of the pin. Don’t start with a deep bevel. What I actually do is chuck the pin in a drill & spin while arc sweeping on some 400grit sand paper. Ok..we’ll I use my 2x72 belt grinder but then I have been doing it for a lot of years.

**celltech** · 11-02-2022, 10:35 PM

Originally Posted by KMW1954

celltech do you recall what his fee was? Turnaround time?

It's around $65 total and he did mine in around a week. He loves to communicate and will even send pics when he is done.

https://deshind.com/boltbushing/

**KMW1954** · 11-02-2022, 10:52 PM

Dave, once again I have to agree with you. These loads have run just fine in the Model10 and the Axis with the same primers. I do know for certain that my Axis does not fire CCI#41.. So do you think just shortening the pin will cure this?

celltech, thanks for the feedback. I will have to contact him.

**Robinhood** · 11-03-2022, 12:25 AM

I would rather believe that the pin radius must not be below the face when the pin is in the fired position with a cartridge with a primer in place. That dimension could be much shorter than the firing pin protrusion dimension. I.E.... Firing pin protrusion is .040" vs firing pin protrusion with primer anvil bottomed out is .020. The firing pin Radius in Dave's picture is spot on.

**Dave Hoback** · 11-03-2022, 01:52 AM

Originally Posted by KMW1954

Dave, once again I have to agree with you. These loads have run just fine in the Model10 and the Axis with the same primers. I do know for certain that my Axis does not fire CCI#41.. So do you think just shortening the pin will cure this?

celltech, thanks for the feedback. I will have to contact him.

If there is slop in the pin to bolt head hole fit, no. Just going off the info you’ve provided, I think you have a case of “a little bit” issue. It’s a little bit too much protrusion, it has a little bit too much radius and a a little bit too much pin slop. Kinda like tolerance stacking, ya know? I could be wrong of course. Won’t hurt nothing to file the pin down a bit to check. I wouldn’t go all the way just in case it needs bushed. Take it down to like .045” and give the tip a nice Radius. If the problem still exists, my money is it needs Bush’d. But if it fixes the problem, or at least gets better, my hunch is confirmed.

**KMW1954** · 11-03-2022, 08:34 AM

Good morning and thanks everyone!

I trust and agree with all of you in you assessment. Yet I an still reluctant to start grinding away on this pin. I have looked around the web and seems no one offers the Savage one piece firing pin. So no do do not feel confident doing this.

Can the New Style pin be converted to the Old Style?