Black Hills 300WM Ammo

[sagillman]

I have used this ammo before and had no problem but my uncle gave me a few boxes for xmas, and I planned on shooting some today. but when I chambered a round it felt pretty tight. when I go to extract a live round the bolt handle opens smooth until you get to the last 10-15% of the throw and it requires a lot more force. I marked up the round with a permanent marker and ran it through the gun (I can post pics). no marks on the bullet but it did rub the marker off almost all the way around the shoulder. the rifle is my blueprinted rebarreled mauser, the headspace is g2g. should I just shoot it and not worry about it?

 

[Pappasniper]

I would, but what the fuck do I know. I jam rounds in my gun all the time and press. Did you try some other rounds in the box?

 

[Kilmore]

As per Krieger's Barrels website. Posted only for informational purposes only. Properly sizing brass.


If the shoulder on your brass is pushed back too far, at ‘best’ you will have accuracy issues, at ‘worst’ you can have a failure to extract or failure to fire because the cartridge is pushed too far into the chamber. Or, it could fire, stretching the brass too far, too fast, and you could split or separate a case. If it is not sized back far enough for the chamber in your rifle, you can have a failure to feed or completely close the bolt. Depending on the length and the rifle type, this could result in firing out of battery and can be extremely dangerous!

Properly sizing brass is even MORE important if you are firing brass in a loose chamber, then sizing it for a match or minimum tolerance chamber. Brass springs back a bit after sizing and it is common for .223 Rem ammo fired in a NATO chamber to not size properly, even with a full length die, to fit into a minimum SAAMI .223 Remington chamber. In these cases a “Small Base” sizing die may need to be used, but still does not guarantee it will fully re-size brass fired in a loose chamber to the point that it will work in your minnimum SAAMI chamber. WHENEVER POSSIBLE a rilfe barrel with a new match chamber should only be fired with new unfired brass for the first time, then that brass re-sized and used in that rifle/chamber only. Even rifles chambered with the same reamer can vary enough that brass sizing can be an issue. Please keep this in mind when you have an "It works in rifle "A" but not rifle "B" " issue with your ammo.

 

[sib1948]

I definitely wouldn't shoot it! Listen to your rifle-it's trying to tell you something. If you ignore it, you may have catastrophic issues as mentioned above! I admit that I'm relative new to reloading, but it just seems to make common sense​.

 

[sagillman]

I would, but what the fuck do I know. I jam rounds in my gun all the time and press. Did you try some other rounds in the box?

well after I read your reply I went and chambered all 60 rounds and surprisingly about half of them were noticeably easier to chamber & extract.

 

[RHunter]

I'd shoot them and would not think twice about it.

If you are really scared about it, buy a Wilson headspace gauge, it will tell you more than you can learn with a black marker.