I ntice Starline offers a basic.cylindrical ,no taper ,no shoulder,no neck brass now.
I'm sure someone has invented an AR cartridge already and all I have to do is research,but a .357 ish cartridge can be done with this brass.
About .500 of bullet ogive can protrude.
I'm thinking a ballpark comparable cartridge is the .357 Maximum....just for visions.
The .223 based cartridge would be a little longer.And,the .357 Maximum has a Max SAAI pressure of 40,000 psi vs the .223 at 50,000 psi.
Per my Nosler book,in .357 Maximum,with 158 gr bullets,case capacity seems the limiting factor at about 1900+ fps and H-110 from a 10.5 in bbl
More interesting,to me,is a 180 gr partition handgun bullet that gets max pressure at 75 % case capacity with H-110/296. 1500 fps +. That means there would be room for more powder to get from 40,000 to 50,000 psi in the .223 based case. Also,going from a 10.5 in bbl to a 16 in bbl leads me to believe 2000 fps might be possible.with a 180. Certainly 1800 + Not quite a 35 Remington...but then,not so far behind.
Stock 223 magazines,bolt,etc.
IMO,the 180's would be a good hunting round,and for HD,the 158's at over 2000 fps would probably be effective manstoppers.
Cold,windy day.Something to think about. Actually
Since I assume this has been done,I'd be curious if someone is making barrels.I have an upper thats getting dusty.
I'm sure someone has invented an AR cartridge already and all I have to do is research,but a .357 ish cartridge can be done with this brass.
About .500 of bullet ogive can protrude.
I'm thinking a ballpark comparable cartridge is the .357 Maximum....just for visions.
The .223 based cartridge would be a little longer.And,the .357 Maximum has a Max SAAI pressure of 40,000 psi vs the .223 at 50,000 psi.
Per my Nosler book,in .357 Maximum,with 158 gr bullets,case capacity seems the limiting factor at about 1900+ fps and H-110 from a 10.5 in bbl
More interesting,to me,is a 180 gr partition handgun bullet that gets max pressure at 75 % case capacity with H-110/296. 1500 fps +. That means there would be room for more powder to get from 40,000 to 50,000 psi in the .223 based case. Also,going from a 10.5 in bbl to a 16 in bbl leads me to believe 2000 fps might be possible.with a 180. Certainly 1800 + Not quite a 35 Remington...but then,not so far behind.
Stock 223 magazines,bolt,etc.
IMO,the 180's would be a good hunting round,and for HD,the 158's at over 2000 fps would probably be effective manstoppers.
Cold,windy day.Something to think about. Actually
Since I assume this has been done,I'd be curious if someone is making barrels.I have an upper thats getting dusty.
Last edited: