firing pin assembly replacement

[KPB71]

Hope you guys can help me out have a SAVAGE Model 12 LRP 6.5cm need to replace firing pin assembly, bolt head to small firing pin bolt head cant seem to locate any thx

[Robinhood]

Lets see, you have:
a Model 12LRP 6.5CM
You need a firing pin assembly
And a bolt head to small firing pin bolt head

Where do we go from here? Are you changing something? Are you looking for a different size bolt face? Is the firing pin large or small that you are looking for?

[KPB71]

was told that i need to change it out in order to shoot Lapua brass and not pierce primers any more, need small firing pin bolt face

[short round]

Measure diameter of firing pin in front of firing pin stop nut. Small is right at 0.104 " Large 0.140" Most likely yours is small firing pin. While the firing pin is out, inspect tip for damage. Pierced primer may have damaged pin. Pierced primer could be caused by hot load. Clean bolt, primer pieces may be in it.

[Scott Evans]

Have you actually been piercing thick cup primers, or not?

He's getting Remmy-centric advice. The actual pin diameters vary between .065"-.069" or so, you want the largest diameter pin you can find. If its already .068" or more don't change it. Dress up the pin head from a full hemisphere shape to more of a semi-hemi bowl shape. Then you want a bolt head with the smallest pin hole. Then set pin protrusion to .040" +/- .005", if you get light strikes/misfires bump it up a notch. Ignore pin cratering on hotter loads with never a pierce, don't ignore piercing. Use thick cup primers for hot loads, Rem 7 1/2, CCI450, CCI BR4, 205M, Tula SRM.

FYI Remmy small pins aren't appreciably smaller. Savages already have a small pin.

To me bushing a bolt head is a waste of money to try and solve a non-pierce problem, let 'em crater, it hurts nothing.

[Zero333]

All recent Savage centerfire rifles have a small diameter firing pin.

Even if someone has a older savage with a thicker firing pin it doesn't mean they'll have problems piercing small rifle primers.

[Scott Evans]

He's NOT referring to the intermediate diameter of the pin where it goes thru the bolt head retaining pin. he's referring to the tip diameter.

[KPB71]

thx for all the info guys my load was 41.7gr h4350,, cci 450m,,lapua brass,,143eldx hornady book max load is 41.5gr showed some guys at my gun range was told that i needed a small firing pin

[Scott Evans]

So were you actually piercing primers or not?

If you are actually piercing a 450 then something needs attention. Them suckers are tough.

[RustyShackle]

:o You are above max load and having problems? Seems a little sketchy.

As others have stated, check firing pin protrusion.

[Robinhood]

Is the problem FTF or pierced primers? Pin protrusion is a potential issue for FTF but not the pierced primers. Pierced primers could be pin tip profile, hot loads with thin/soft primer cups or a combination of the two.

If you have been piercing primers then you bolt head may need to be thrown in the trash as the pin hole may be opened up from hot gasses cutting the hole oversized to the point it facilitated primer piercing when under normal circumstances it would not have happened. Don't bush it buy a new one in that case.

[KPB71]

Yes i fired 3 shoots pierced 4th went home pulled bullet checked every thing out reloaded went back to range pierced 3rd one. PT&G a good place for bolt head

[Zero333]

CCI #41 primer could solve your problem. hardest small rifle primer on the market. Even tho the cci450 has a hard cup, the cci #41 is even harder.

worth a try.

[KPB71]

was going to try CCI br4 primers

[Robinhood]

Have you thought about backing down the the next lower node?

[Robinhood]

PT&G a good place for bolt head

Some like their stuff some don't. I do. The pro's on the bolt heads are in my opinion are. Backside radius deleted, faces are parallel, and the ones I have inspected they are uniform in depth at all faces. Con's Price.

read this
http://www.savageshooters.com/showthread.php?43818-Pacific-Tool-and-Gauge-bolt-heads

[KPB71]

Thx alot for the info Scott my pin diameter is .068 the set pin protrusion was .049 settting it back to .044 . im adjusting it then loading a round with just a primer and firing it will this work ok, the reason i ask is a protrusion of .034 will set off the primer i can adjust the firing pin in .010 increments. made it to the range after the fix every thing worked great thx again guys