Over pressure, bad headspacing, Or normal?

S

Stray03

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Here are a few pics of some 10 gauge I loaded and shot recently, Would like to know if people would consider this a normal "look" or is it signs of overpressure or bad head spacing maybe.

30 grains sr7625
1 5/8 oz lead
Rem power piston wad
Star crimp

Thanks
20150320_112820.jpg

20150320_112811.jpg
 
Primers don't appear to be pertruding heavily over top the brass, it just looks like a crater effect from a heavy hammer strike on the firing pin. More experienced eyes may be able to say more however.

Dan.
 
Little less flat than a 3.5 inch steel. But not same gun. These are 2 7/8 loads so i cant get commercial. Supposed to be a rather low velocity load at 1240fps 9670 lead units of pressure. No idea in psi.
 
Wish I had a chr. I'm going to drop down from a 1 5/8 oz to 11/4 as I have seen identical load data, but with less lead in other books/sites. Will try that and see how the back of the shells look. (may try some in my BPS. rather than what I made them for. As I know she'll hold up well shooting hot loads)

Thanks to everyone for easing my mind a bit.
 
Here is what overpressure looks like,these are 44 mag that I shot first time out with a new gun and I had never shot a magnum gun before. I got through half the box and quit cause it looked pretty bad to me.

 
Yeah you have a few real nice ones in that picture. I know mine werent to that level because I had seen a few pics of bad overpressure. I just figured mine were a bit hotter than they should be and I didnt want to damage my 1901.


Once again thanks for everyones input im opening a few rounds to drop the lead weight to 1 1/4 as a test using my bps and ill go from there. ( ill probably switch the load to that for all of them even if no difference just to reduce amount of lead needed. )
 
Boys, the pressure in a shotshell does not approach the level to transform the primer like a brass cartridge. There is no way to tell anything about a shotshell primer with regard to pressure. A .44 mag for comparison? No way.

With shotshells you must stick strictly to the recipie. Changing any componant can throw the pressure into orbit( for a shotshell) and there is no way to tell when you are there until your gun eventually comes apart. Please check out some reputable proven loads in a published manual. Coming here for pressure advice based on primes appearance is leading me to believe that you do not have a manual and that is not good.
 
shredder0 said:
Boys, the pressure in a shotshell does not approach the level to transform the primer like a brass cartridge. There is no way to tell anything about a shotshell primer with regard to pressure. A .44 mag for comparison? No way.

With shotshells you must stick strictly to the recipie. Changing any componant can throw the pressure into orbit( for a shotshell) and there is no way to tell when you are there until your gun eventually comes apart. Please check out some reputable proven loads in a published manual. Coming here for pressure advice based on primes appearance is leading me to believe that you do not have a manual and that is not good.
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i have seen many primers with pressure signs in the years I have been involved in hand loading and I dare say Ganderite has as well, he being in the industry for as long as long as some of us have been alive.
to say that you do not notice pressure sighs until a gun comes apart is TOTALLY FALSE and until you really know what you are talking about I think you should quit giving unfounded advice- are you also one of those people that think Damascus barrels are dangerous as well?
your post certain seems like it.
And BTW the OP was not asking about load data he was asking about pressure signs, so regardless ,depending on the gun one load may be more dangerous than another .

further to this,That load IS right out of at a manual, Lyman second edition in fact.
Cat
 
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catnthehatt said:
further to this,That load IS right out of at a manual, Lyman second edition in fact.
Cat
Click to expand...
indeed that is the one. The lower 1 1/4 option was on a forum.
Tried the both loads in my bps. Same results primer wise for the 5/8 and rounded primers for the 1/4 looks like ill be switching down i thi k
 
The primers don't look bad .however the face of the shell looks odd to me with that bevel from face to rim .what are the shells being fired out of .
 
I get bevels on my steel loads 3.5" in my 870 super mag
So does everyone I hunt with for most part as they Give
Me the empties to reload lol
Now I'm sure I'm not into reloading near long as the cat
And ganderite but I will say this

In some respects , yes changing components In a shot shell
can cause SLIGHT pressure changes but nothing to
BLAST INTO ORBIT???
I LOAD 2" ,2 1/2" , 2 3/4" , 3" AND 3.5 INC LOAD
RANGING FROM BLACK POWDER TO MAGNUM SMOKELESS.
I'VE SWAPPED CASES, PRIMERS, WADS,
BUT NEVER THE POWDER !!!!
ONE GAS TO REALIZE THAT FACTORY PROOF THERE BARRELS
TO HIGHER PRESSURES THAN ANY LOAD BOOK PUBLISHES
SO UNLESS YOUR .MANUFACTURING YOUR OWN GUN POWDER OR USING
INCORRECT PROPELLANT, CHANGING COMPONENTS TO SIMILAR
COMPARIBLE ONES THE DIFFERENCES MAY BE MORE IN
PATTERN MORE SO THEN PRESSURES GENERATED
FOR INSTANCE IF I NEED A WAD LIKE A AA12 , IN SOMEONE TIME NOT
HAVING THEM, I'LL USE A FEDERAL WAD WHICH IS SAME HEIGHT
AND SAME CAPACITY . NOT CHANGE IN LOAD PRESSURES WHAT SO EVER
I'VE BEEN LOADING FOR 20 yrs, I'VE ALWAYS HAD FUN AND ENJOYED
THE CHALLENGE OF TAYLORING LOAD TO PARTICULAR GUNS

SORRY CAPS STUCK ON LOL
 
Different primers (brand, type, and even lot #) have different hardnesses and thicknesses of primer cup. Trying to guess at pressures from primers is like telling fortunes from splattered chicken blood.
Different factors with the firearm itself can drastically effect the appearance of fired primers regardless of the condition of the primers.

I use primers for comparison purposes only. If one looks flatter than another with the same powder, brass, bullet, and primer in the same firearm I will conclude that the flatter one is a higher pressure. It doesn't tell you much of anything about what the actual pressure is though. A flattened primer like Skinny 1950 showed can happen at a perfectly safe pressure if you have thin and/or soft primers (Federal are known for this). If that happened with a known good CCI primer (thicker/harder) I would be worried. Federal primers in 300WM, 270, and other rifle cartridges above 60k psi often totally flatten at perfectly safe pressure levels in factory ammo. I've also had factory shotshell primers flatten on me pretty significantly with some slug loads; especially sabot slugs. I assume they are loaded to the SAAMI safe pressure since it would be suicide to exceed them without warnings on the box in our litigious society.

In my experience a crater is most often caused by the hole the firing pin moves through in the bolt face being oversized and is little influenced by pressure.

Velocity will tell you a lot more about pressure than primer condition but isn't a perfect system either (especially in shotshells). If the book the data is from lists a velocity with that specific load it can be a good point of comparison assuming you have a similar barrel length on your firearm.
 
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