The .300 blackout never interested me. It's a .223/5.56 case necked up to .308 and trimmed to fit in the magazine. But after learning a .300 will easily chamber in a .223/5.56 I refuse to get one. SAAMI really screwed up approving that one. Example 1 out of far too many you can find on the interwebs...
https://rifleshooter.com/2019/06/kaboom-300-blk-in-5-56-223-ar-15/
What really does interest me is this .308 wildcat based on the 6.8SCP case. That's a bigger parent case than the .223 which means it holds more powder. 6.8 is a .277.
So I apologize in advance this started as a basic comment and 1 question but then when I started thinking about it...a bunch of questions came up so this is mostly my rambling, but...
Yikes. You mean you can't force a .300 bullet down a .223 barrel? Ouch.
So basically it's a .223 case that the neck is size up to fit a .300 bullet? But it starts with NEW .300bo case right? Not like you could take one of your .223 cases and cut it and stretch it? IT's a "new" bullet/case design but only the case happens to be same outer size as original 223 case? Is the finished case length the same which means you had to cut the length of the case to allow for a longer bullet? Or is a a short stubby bullet?...but then that makes no sense either. THe bullet has to be longer if you want decent ballistics, right? IF you have a larger/longer bullet then the case length has to be shortened.
And what is the point? I mean I understand the heavier bullet is more stopping power (but losing some range), but what's the point of starting with .223 case size? Are we saving money by utilizing existing case size or are we trying to chamber a larger round in the same gun?
And....how the hell does a .300 bullet fit the head space of the 223 rifle? I would not think it would seat into the barrel well enough to actual chamber and fire. Is the overall case length shorter than a 223 and the larger 300 bullet tapers enough to just happens to fit/chamber into the barrel? The more I thought about it....the more I don't see how that's possible.
So then the lower is basically the same on both .223 and .300 and then you swap the upper & barrel? Or is it just the barrel and that's it? I'm really not a gun builder (yet) so I'm not that up to speed. But if the overall case length is relatively the same and the outside case diameter is the same, then you just need a new barrel with proper head space and barrel diameter for the round and leave all else alone? And if that's the goal; new barrel, new caliber, what about the gas operation of a different round/explosion and the recoil springs etc. Or is that all taken care of with the barrel? Or do you need the whole upper?
And again...what's the point. If you want a .300 bullet, why not just use the 308. How much powder can you actually get in the case for .300bo in a shortened 223 case anyway? I mean if you wanted to hunt deer at close range with it okay, but then...there are plenty of guns already chambered for deer sized game. Is the 300 just an experiment some gun tinkerers came up with to create a new gun/caliber?
Okay thanks a hell of a lot....now I'm curious as to the why and going to go research the possibility of putting a new caliber upper on an AR...which I'm sure someone has done a million times already.
Thanks buddy. But my original suspicion is confirmed....I screwed up the loading which resulted in the squib load.