had a blow up yesterday

[timmo58]

yesterday i decided to reload some 25/06 cases i had bran new , i used a load from a published book and it blew the primer right out of the case i wont use it no more . im just lucky im here at all new case wasted

[qajaq59]

Knowing what book and what load might help someone else from doing that. Can you give details about components, load, etc?

[wncchester]

And maybe tell us if your load was a start load or max. 

And if this was a first time effort reloading for that rifle or have you run previous loads in it without incident.

[Graybeard]

I exploded a TC once many years ago with a book load as well. I've given the specifics many times on here but do not assume any and all book max loads are safe in your firearm. Weird circumstances can develop to make them unsafe.

[Luckyducker]

Timmo58, you say this was a load you have used before.   Was this load used in this particular rifle before?   If so, did you switch brands of brass?   Some brass such as Hornady has less case capacity than Rem or Win brass and using the same charge weight of powder can cause excessive chamber pressure. 

[timmo58]

i will give the specifics now that someone has asked for them to keep someone else safe <<<dont use this >>>without knowing all you need to know!!!!! i do not , the load that blew the primer right out of a brand new case was IMR 4350 53.5 this load is listed in the (ONE BOOK ONE CALIBER)THE COMPLETE RELOADING MANUALFOR THE .25/06 REMINGTON and with the data listed i used cci 200 large rifle primer, nosler 100gr balistic tip blue tip bullet the case was new never shot rem from midway usa that covers it primer, powder, case, bullet. i have relized i need to start over so at low end of velocity and pressure is where im looking as most shots will be approx 200 yrds with an occasional out to 300 or so this was with reg hunting barrel on a model 111 SAVAGE rifle in .25/06 with Banner 6-18 power scope by bushnell

[timmo58]

also it was the only load listed as it is a max load page 34 of the book mention in above post sorry for bot posting it with the other

[wncchester]

"...it is a max load page 34 of the book mention..."

I think we can see the problem now.  You seem to have gone to a full max load for your first effort?  If so, that's not a good thing to do and all the books caution us against it.  Now you know why.

The rifle make, model no. and scope type won't change a thing.  You will have to reduce the charge.  A lot.

Good luck!

[JustaShooter]

This also highlights the need to use multiple reliable sources for your loads.  Hogdon's reloading data center  http://data.hodgdon.com/cartridge_load.asp lists 52.8gr IMR 4350 as MAX load for a 100gr Nosler partition.  So according to the powder manufacturer, you are nearly a grain over max.  It would be interesting to see what the Nosler manual says, but I don't have one handy.

You would do well to spend the money to get a couple of reloading books from the bullet manufacturers you plan to use, and cross-reference the load data with the published powder manufacturer's data on the internet.

Just a Shooter

[timmo58]

i have went and got hold of seven differnet manuals to go from

[qajaq59]

Well, you're in one piece with both eyes intact, which is great. And now some others may have learned something, so I'm glad you gave out the details.
When I worked for the railroad we had a saying. "All our safety rules are written in blood." Somehow I suspect that most of the loading rules might have been as well.

[quickdtoo]

The Nosler 5th lists a max load as 51gr IMR4350 for the 100gr Nosler Ballistic tip!! Start load is 47gr in Win brass with WLR primer, COL of 3.250".

Tim

[Sweetwater]

As we all know, every barrel is different, and you just may be one of the lucky ones with a tight chamber. Tighter chambers reach velocity and pressure levels at lower charges than do looser chambers. Therefore cheaper to shoot! A good portion of our factory rifles have loose chambers, and so we get educated that way and lethargic over starting at recommended beginning loads and so on.......

Your experience and writeup is a GREAT reminder to the rest of us to ALWAYS remember our teachings and start at the starting point. Or as the song goes, "Walk, Don't Run".

Regards,
Sweetwater

[timmo58]

i agree  it was a fluke all the way around just ill never start with a max load im lucky to be here still. the primer blew right out of new case and case wont come close to holding another i junked itt then hammered out the rest i loaded that day in all was trying for a 3shot group to hunt with after first pressure sign which i agree was WAY WAY TOO MUCH i quit and by hammered i mean bullett puller by rcbs looks like a hammer and u do hammer with it some ?? like when this happens hope it dont again ill be better off if it dont

[Hairtrigger]

The next primer you seat into that case should slide right in easily!

[GameHauler]

The next primer you seat into that case should slide right in easily!

 

[Don Fischer]

Nosler lists 51.0gr as max, Hornady 52.5gr and Sierra 53.0gr. In each case the load was safe in the rifle it was fired in on the day it was fired. Back off 10% of any max load and work up pressure loads 1/2gr at a time and this won't happen.

[jgalar]

It seems to me that the only way a primer could completely blow out of a case is to have gobs of extremely excessive head space.

If you didn't size the new case before loading the new case may have had an improper shoulder angle causing excessive head space.

[Hairtrigger]

It seems to me that the only way a primer could completely blow out of a case is to have gobs of extremely excessive head space..

 That is true... flattened primer and loose primer pocket yes but completely out of the case?

[Lone Star]

I had the primer "blow out of the case" years ago, I never did determine why as it was a moderate load that I had shot before.  Probably a loading error - too much powder in one case.   I pulled the others and weighed the charges, which were all what they should have been.  I stopped using that load.

When a case is fired with a WAY over max pressure load the outside diameter of the case head expands, and the primer pocket diameter expands too.  When the case is forced out of the action what is left of the primer falls out.  There is substantial gas leakage obviously, but in my instance it was an M7600 so all I saw at the shot was a little smoke....


.

[Hairtrigger]

Too large of a flash hole in the case?

[Don Fischer]

Primer cannot fall out of the case on firing. If the pressure is so high that the head expands enough to let the primer fall when the action is opened, I'd say your damn lucky to have any eyes left.

[Sweetwater]

Years ago, in the late 50's, my Dad had a friend who was handloading for either a 308 or a 30-06. I don't recall and he had both at the time. He 'overdosed' a load using what turned out to be a faulty powder scale and claimed to have 'blown the primer' as it was gone when he extracted the case. I've written in other threads of a situation I had in the early 80's with my Persian Mauser 8x57 where I was trying different powder burning rates to see if they would 'fix' the accuracy problem I had. The short story is I extracted a case that sounded weird when it fired and the primer was gone. I fired a second shell, same weird sound, and saw the primer hit the ground when I extracted the case. It landed beside the primer from the first case. Case head expansion due to exceedingly excessive pressure allowed the primer to fall out. I consider this a blown primer pocket, not a blown primer. I also consider it a dangerous situation and one I was smart enough to get myself out of and the mauser was strong enough to allow both the rifle and me to survive unscathed. Oh, I definitely 'hammered out the rest of the loads' via RCBS bullet puller.
 
I'm of the opinion that a blown primer will have a gas leak between the primer and primer pocket, allowing the pressure to come back through the flash hole and exit the rear of the chamber, instead of the front.

This situation is also why GB and others are constantly reminding and encouraging all of us, not just newcomers, to get a 'library' of manuals and use them. 'nuff said!

Regards,
Sweetwater

[Lone Star]

If the pressure is so high that the head expands enough to let the primer fall when the action is opened, I'd say your damn lucky to have any eyes left.

Nope.  I was firing an M7600 which gives ample protection to the eyes....good choice, not "good luck".   


.

[charles p]

I have an old manual that doesn't show H or IMR in front of some powders.  I loaded a 25-06 at the max with IMR (but it was supposed to be H) and the recoil sheared the screws that held the scope base to the barrel.  After the first shot, I knew the load was wrong.  Luckily it was in an old Browning BBR that has nine lugs on the bolt and its bolt is the size of a ball park weiner. 

Learned a lesson that day.

[harrys]

My ruger 77 hvy bbl loves 100 gr b.t. with 52.0 gr imr4350 one hole grps have target to prove it ,,, couldn't believe it shot second grp when bbl cooled did it again.54 is real hot!!!!!!

[Mule]

I am a little late jumping in here.
First I am happy there were no injuries.
Second, did you check the case for length before loading?
A case in need of a trim can drive up pressures.
I know the case was "new".  I check new cases just like any other fired case.  Sometimes they need a trim.