I know this is the wrong place but!!!

[Ten Ring]

This is a reloading Quistion, on a Bolt rifle savage tactical 300 win mag.
I just had a catastrophic failure on mine with hand loads. Seams to me to be and over chard. I use a Lyman DPS2 auto dump and scale.
Load. 77 grains of IMR 7828SSC UNDER A 168 BTSP ICC mag rifle primers

[howl]

What is the question exactly? Where did you get your data? Need more details.

[Ten Ring]

I have to look back and see what manual I used I believe it was a Lyman but looking on line now I see a huge vearation of mas loads for that powder from 75 to 80

[Ten Ring]

Was wondering would a 2 or 3 grain over charge cause that or I heard that a crack in the case between the belt and the case head can cause this I shoot and reload for this rifle for 12 years but this is my first with this powder .
Had used RL19 previously switched only because last year powder has be hard to come by

[Ten Ring]

I just checked in both Lyman and IMR Lyman max is 79.5 IMR is 80g max

[LR1955]

Guys:

Ten Ring is right. This isn't the place for a reloading question concerning a .300 Magnum. However, due to the nature of this failure, 'catastrophic', I will let the thread stay here in case others have an explanation.

LR55

[Ten Ring]

Sorry did not want to step on toes but just want to know if it my mistake or a problem with the powder and manuals. And I figured shooters are shooters and reloaders are reloaders. Regardless of the shap or color of your chosen wepon.

[LR1955]

Sorry did not want to step on toes but just want to know if it my mistake or a problem with the powder and manuals. And I figured shooters are shooters and reloaders are reloaders. Regardless of the shap or color of your chosen wepon.

TR:

Not stepping on toes. I want you to figure out why your blaster blew up. So, lets keep it open so others can assist.

I think you should send a picture of what ever is left of the rifle.

LR55

[Ten Ring]

I would love to but can't figure out how. I working on a smart phone because I don't have internet out where I live

[Ten Ring]

Img_0045.jpg

[Ten Ring]

This is the bet pictur I could get to up load

[Klem]

The 300WM case volume varies to such an extent between manufacturers that Quickload lists 5 different brands; as if they were different calibres altogether. The difference in case volume across brands means the difference between a dangerous overload, or OK/fine using your load (I ran a few simulations).

It would help if you were more specific. What is the manufacturer of your cases, what is the brand of your bullet and what was the overall length of the loaded round?

[Ten Ring]

FC and Winchester 3.372 over all length set to the grove on the hornady bulet
Bolt closed with easy

[Ten Ring]

Wish I could get the bolt and fade out to see where or how case failed

[Ten Ring]

Hornady 165 BTSP

[Klem]

In the 300WM

Federal cases have 92grains of H2O (capacity) and,
Winchester has 93.8.

This difference in volume, even with the same amount of powder is going to result in different pressures.

Quickload computer simulation
Using the Winchester cases you get a pressure of 52,887lbs.
Using the Federal cases you get a pressure of 55,378 lbs.

This means there will be roughly 40fps difference between the two manufacturers cases but both are still way below the SAAMI peak pressure of 62,366lbs. You get more velocity out of the Federal cases at about 3,100fps mark (depending on your barrel length) but as far as pressure is concerned they are both mild loads.

Something else is wrong. If it was easy to close the bolt it could still be too much headspace. Not enough headspace makes it difficult to close the bolt and that is way more safe than too much headspace. Too much headspace results in the case rupturing, and that will occur with any load; hot or mild.

[Ten Ring]

That what I woundering, I probably have 1000 to 1500 rounds threw the rifle. I bought it from a friend who had bought it new
I got it in 2005 it is one of the first Tactical Savage made before the Accu trigger.

[Ten Ring]

I had be think more like seated two long so bullet was in to or touching forceing cone.
I had made that mistake years ago when I started reloading

[Klem]

Unlikely to be overall length jamming in the lands. The SAAMI spec for COAL is 3.34" and you are loading 3.37". That's not a lot over spec and as you say, you've shot over a 1,000 rounds through it already. The throat will have worn even longer and presumably you've been loading similar lengths, and used the same bullet through it already.

With respect, you started the thread saying it was a 168gn bullet and later said it was 165gn. In your shoes I would go back to basics and weigh and measure the bullet. Confirm it is what the box says it is. Same with the powder and how much is going in the case. Check fired cartridges against how much you are bumping the shoulders back. Something has seriously gone wrong and it might be a simple mistake.

[Texas]

I can not open your picture. Can you try to send it again
Did the bolt or barrel come apart? If you can, take pictures of the brass base and a picture from the side. The 300 Win Mag head spaces on the belt as do most belted cartridges.