Precision cartridge

[660 driver 862]

So anybody had issues with precision cartridge ammo? I was shooting a new box of them in my type 38 arisaka and it almost popped all 5 primers completely out and put a hole clean through one where the firing pin struck it. I can see daylight through it. I noticed it leaked the gasses after the 2nd firing. Good thing those arisakas are one of the strongest bolt actions made! I did email precision cartridge and waiting for a response. I also noticed early signs of casehead seperation.

[660 driver 862]

Im not sure if i should even reload these cases which would be a real bummer since 6.5x50 jap isnt exactly super easy to find. I need to get a caliper and check the unfired ones for OAL. I have reload data from a gentleman last name of Valmont in england who specializes in old milsurp reloads.

[MinnesotaFarmall 294]

You have a headspace issue if primers are backing out. Too much bump back on shoulder, or excessive clearance between chamber and bolt. 

[660 driver 862]

Something aint right for sure. This rifle is in very nice original condition. It even has a fully intact mum and all original furniture. Ive shot probably 60 rounds through it with zero issues. Like i said i need to get my hands on some calipers and check all the dimensions.

[MinnesotaFarmall 294]

That's what I would do too. Can be tricky to measure shoulder bump on them without the right tool. I know it starts with a c, I just can't think of it at the moment. My set is made by hornady. 

[MinnesotaFarmall 294]

Head space Comparator is what it's called. 

[kevinj 304]

It is also possible the loads are too light.

[kevinj 304]

1 minute ago, MinnesotaFarmall said:

Head space Comparator is what it's called. 

I have one off those for my match rifle.

His fired cases should be snug if re-chambered, if not they may have been pushed back too far or loaded too light.

[660 driver 862]

I actually dont have to work tomorrow so im going to ahlmans with the rifle and the fired and unfired ammo to see if we can figure out the issue. Precision answered my email and said it sounds like my headspacing is way off and to take it to a gunsmith to verify fitment. Problem is ive fired other rounds of various manufacture through it including precisions stuff with zero issues. I bought the ammo at ahlmans as well.

[MinnesotaFarmall 294]

Just curious what they found out? 

[acem 1,643]

You  may need to cast your chamber.

[660 driver 862]

Ahlmans is 2 to 3 months out on even what i wanted so i may take it to a different smith. I have piccys of bullet dimesions. The reload data from my old norma manual is in the background. Top round is from steinel. Bottom round is suspect round from precision.

[615 spike 64]

What you measured is overall cartridge length.which changes with bullet length  and seating depth . you need to measure from the base to the middle of the shoulder to determine if the head space is different.  cab 

[MinnesotaFarmall 294]

Yup, right on. You have to measure where the bullet ogive starts. That's the part where the bullet comes to diameter to contact the rifling, to keep it simple. What is the distance from base to the shoulder? 

[MinnesotaFarmall 294]

Although you are trying to find the correct overall length given by the book. What that is telling you is max length for standard magazines, basically. Most bullet manufacturer are going to have around the same from tip to ogive length, although not exactly, but going to be close. Berger, however manufactures bullets that have way longer length. 

[sandhiller 16,604]

Go, No Go and field gauges from Midway USA. 

Have to check to see if the have your caliber

I have been satisfied dealing with them