Little confused about .300 blackout vs .300 whisper
I've got a .300 whisper trim die for making .300 whisper from .223
But I'd also like to be able to make .300 blk brass.
Is there some reason I couldn't just use it to trim to 1.368" instead of 1.350" to make .300 blk brass?
For that matter, could someone fire .300 whisper ammo in a .300 blk barrel?
300 BLK = 1.368" max -1.348" min case length. You are safe. Might want to get the 300 blk sizing die for the shoulder taper sake. That being said, I would expect all 300 blk barrels to be capable of firing 300 whisper ammo safely unless otheriwise stated.
http://300aacblackout.com/
• Case length is 1.368 +0.000 -0.020
Also watch the neck thickness. Some chambers were cut with clearances based on necking a 221 Rem Fireball up to 30 cal (thin brass at neck), other chambers were cut necking down the straightwall section of a 5.56 case (thick neck). Shoot a case with a thick neck, in a tight necked chamber, and you may find lots of unwanted pressure.
Wildcats are always tricky, you need to know what you've got. I can see some guy buying a used 300 Whisper upper, and throwing some off the shelf 300 AAC BLACKOUT ammo in there and getting into trouble.
I'm glad they are standardizing things.
Does anyone know if there is a company reaming the 300 Whisper or Fireball chambers to the 300 AAC BLACKOUT? I think I'm ready to go this route, but I'm trying to do it on a budget.
Thanks.
Originally Posted By RobRat:
Also watch the neck thickness. Some chambers were cut with clearances based on necking a 221 Rem Fireball up to 30 cal (thin brass at neck), other chambers were cut necking down the straightwall section of a 5.56 case (thick neck). Shoot a case with a thick neck, in a tight necked chamber, and you may find lots of unwanted pressure.
Wildcats are always tricky, you need to know what you've got. I can see some guy buying a used 300 Whisper upper, and throwing some off the shelf 300 AAC BLACKOUT ammo in there and getting into trouble.
I'm glad they are standardizing things.
So I guess the real test will be to make some .300 whisper and then measure the OD at the neck, correct? .334 or less = good to go?
I've got ALOT of once-fired .mil 5.56 brass. That's what I'm going to try making it from.
There is a guy on silencertalk that says he is going to convert them for $50 + shipping http://www.silencertalk.com/forum/vi...7&hilit=reamer
Originally Posted By mak91:
There is a guy on silencertalk that says he is going to convert them for $50 + shipping http://www.silencertalk.com/forum/vi...7&hilit=reamer
I sent him a IM on silencertalk, but haven't heard back. I'm kinda excited to try this round out! I'd like to do it on a budget, just to try it first so I'd rather not get saddled with a $400 Noveske if I can get away with a cheaper alternative.
