high pressure signs?

Cali_Ed · March 2, 2015

So here is this first pic of the first case I had some significant feed back once it was fired. Very smokey, lots of smoke exiting the rifle from the dust cover side.

Case on the top left. The rest of the cases in that group were fine.

The second pictures I'll show you guys had a flattend out primer, but the rest from what I see in that same group where fine and even the next charge up were perfectley fine.

My process when dropping a charge into a case is to immediately cover it with and upside down projo and move it to another spot in order to avoid double charges.

Another thing I noticed was that in a certain direction on the bottom rim of the case there was a shiny spot like if maybe gasses escaped in that direction. Idk if you can tell in the second picture. Are these cases conpremised?

Sisco · March 3, 2015

Correct me if I am wrong, but you appear to have a blown primer in the first picture as well,last row second from left. What was your load and bullet? I would cut the powder 10% and work up slowly.

Cali_Ed · March 3, 2015

not sure i know something went wrong with the one on the first picture, the primer was still there the day off must have fell out during transport. im thinking i maybe over reamed the pocket and couldnt contain the pressures so it kinda busted?

Tripledeuce · March 3, 2015

Two thoughts.

One, you over reamed the cases. I NEVER ream cases, I swedge them, when necessary.

Two, a few kernals of powder hung up in the powder measure, and dropped with the next charge.

Respectfully

Terry

I just noticed you are using Hornaday match brass. That should not need PP reaming. Second, How often do you check the weight of the powder dropped from your measure?

Edited March 3, 2015 by Tripledeuce

Cali_Ed · March 3, 2015

Figured, gonna get that rcbs swedge tool

survivalshop · March 3, 2015

I agree with Tripledeuce . I see another with a flattened primer , sure sign of OP . The ejector swipes on the bottom of the case with the arrow pointing at it ,is another one . Most look OK , though .

How often are you check weighing you charge , while charging cases ? What scale are you using .

Cali_Ed · March 3, 2015

Check weight every single charge, I use a hornady 30 dollar scale

98Z5V · March 3, 2015

The only time I mess with primer pockets is crimped military brass. I swage them with the RCBS Swager 2 setup, and never have to mess with them again.

I saw that blown primer in the first pic - that thing is BLOWN the fuk out! - and wondered why you were worried about that piece of brass in the second pic. My concern would have been that blown primer piece of brass, brother.

In that second pic, that primer is flat as hell. That's an overpressure sign, as well as pierced primers, cratered primers, bulged case bases, ejector swipes, ripped rims from extractors...

Edited March 3, 2015 by 98Z5V

98Z5V · March 3, 2015

Ed, what other loads were you messing with before you loaded this batch? Clean your powder measure before you started this batch?

Cali_Ed · March 3, 2015

I tried putting primers in with out doing anything and they won't go in or its very tough to get it in,

Cali_Ed · March 3, 2015

Ed, what other loads were you messing with before you loaded this batch? Clean your powder measure before you started this batch?

I've strictly been using imr4064

98Z5V · March 3, 2015

I tried putting primers in with out doing anything and they won't go in or its very tough to get it in,

Lube the two contact points on your hand priming tool, man. There's only two contact points between the lever and the ram - hit those with a dab of grease. It'll make priming a TON easier. Something I picked up on in one of your previous posts, but forgot to mention. Something about "two clicks" and your primer seats - that's resistance on the priming linkage making that noise, and it's wearing out your hand priming tool.

See if that helps with these. Worth a shot.

Cali_Ed · March 3, 2015

Would that stop searing of the outer rim of the primer or smashing it because that's what it's doing, I'm sure I have a case lying around I can show you.

So where my loads for not. Or did some not show pressure signs?

98Z5V · March 3, 2015

Most look very good. Normal. Zero signs of pressure in most of them.

Cali_Ed · March 3, 2015

Here is one example I've already deprived my best examples but this still kinda showing what I was talking about.

Cali_Ed · March 3, 2015

Two thoughts.
   One, you over reamed the cases. I NEVER ream cases, I swedge them, when necessary.
   Two, a few kernals of powder hung up in the powder measure, and dropped with the next charge.
   Respectfully
    Terry

   I just noticed you are using Hornaday match brass. That should not need PP reaming.   Second, How often do you check the weight of the powder dropped from your measure?

I thought that my self about not needing anything done to the primer pocket but like I said they won't go in with out difficulty or just get smashed.

I check every single charge I never take the powder measure word for it.

98Z5V · March 3, 2015

Once I verify that my measure is dropping the same thing everytime, I'll weigh every 4th or 8th drop after that. If I'm making precision ammo, I'll weigh every one to make sure they're the same. Kinda depends on what I'm loading. Once the shell holder is full, and I'm about to seat the projectiles, I'll visually check the whole tray with a small lamp (leaning over the thing), and make sure everything looks damn near the same.

You'll have a very hard time double-charging a .308 Win case, or a 5.56/.223 Rem case - they just won't hold a double charge.

Cali_Ed · March 3, 2015

How far out does your guys scales read out in grains? Mine only does 00.0

98Z5V · March 3, 2015

Your scale reads zero grains?

How far out does your guys scales read out in grains? Mine only does 00.0

sketch · March 3, 2015

Might one or two of those half primed loads get mixed in the bunch?

survivalshop · March 3, 2015

You should not be having problems( as was said ) with the Hornady brass , something is not right with your priming tool or the Brass .What primers are you using ? Do you have the capability to prime on your press ?

You will find that every Barrels Chamber is different & a load in the manual may not show High Pressure signs in one chamber & another it will , shows your working on the edge , just some of your brass is showing it & some not . May just be the condition of the Chamber at the time that case was chambered & fired.

I would reduce the charge a little & toss any brass that spits out the primer .

Cali_Ed · March 3, 2015

Your scale reads zero grains?

just used that as an example.

My press was doing that way more when I was priming with with, I use the federal match rifle primers.

I'll have to toss that one case out.

Cali_Ed · March 3, 2015

Fed210m

MikedaddyH · March 3, 2015

Ed was this 1x brass or did it have more than two loadings on it.

I have observed that using full power loads only works well on new and 1x brass. 2x and all subsequent loading should be used as plinker ammo, so if the primers blow it happens at the range with your buddy's their to help you get the primers out of your trigger group !