Welcome to NJ Woods & Water
Come be a part of NJ Woods & Water by signing in or creating an account today!
- Enter contests and win prizes
- Start new topics, ask, and answer questions
- Subscribe to topics and forums you're interested in
- Get your own profile page, blog, and photo/video galleries
- Participate in live chat
- Send personal messages to other members.
- Share content with your social media such as Facebook, Twitter, and Google+
Posted 02/10/13 - 10:15 PM
I ordered a recieved an upper from Model 1 Sales. It was chambered in 300 Fireball.
I ordered Hornady 300 Blackout Brass for reloading as I was told that they are interchangeable.
At the range today several rounds didn't fire. The firing pin NEVER struck the primer. Then the round didn't extract. It wasn't jammed in the chamber, the extractor just didn't grab the rim..
My theory(s) are:
The 300 Fireball chamber is longer and allowing the rds. to chamber deeper to where the extractor doesn't grab the rim, and the firing pin doesn't contact the Primer
The headspace is off allowing the case to seat too deep in the Chamber..
ANY THOUGHTS ?
On the plus side, when it worked it shot 2" groups with a EOTECH Red dot scope at 100yds.. And 6 different loads shot to the same point of impact. From 125gr. - 180gr. Out of a 16" Barrel .
Posted 02/11/13 - 12:50 AM
Is it possible that the Blackout Brass is intended to be run through a Fireball sizing die before firing through the Fireball upper? Reason I as is I have a 6MMAR that is based on 6.5 Grendel brass but needs to be necked down before loading. In any event it sounds like a F/L sizing issue. I wouldnt think you have that much variability in your headspacing.
Excellence, in anything, never occurs by chance
Achieving perfection is impossible. Striving for perfection makes greatness achievable.
Posted 02/11/13 - 02:57 PM
Thank you for your purchase
The brass is not interchangeable. The .300 Blackout Brass is longer. What you are experiencing is the bolt is not fully locked which is why it will not extract or fire. When it did fire, you are pushing case past the slight shoulder in the chamber causing the weapon to fire out of battery, which would explain the cartridge burst as the bolt was not fully locked into the barrel extension.
The lead is also shorter. Using .300 blackout cartridges in a .300 whisper, 300/221 or fireball chamber is not safe.
Model 1 Sales
Soooooooooooo.. I just ordered 200rds. of 300 WHISPER from SSK Industries, the designer of the 300 Whisper/Fireball rd.
I guess this solves the mystery ..
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users