Before anyone asks... yes, I'm bored. Deal with it 
So, with that out of the way... I've always kind of wondered why there is no .223 Remington 'match' brass with a PPC/BR flash hole? I wonder if it'd be worth it for say, F/TR where we typically use single-shot bolt-guns pushing heavy-for-caliber bullets i.e. 80-90gn at mid to long range. Seems one of the limiting factors for .223 is trying to keep the ES/SD down... the PPC/BR flash hole in Lapua .308 Palma brass was ostensibly to reduce the ES/SD, and had the side-benefit of more meat around the primer pocket, thus longer brass life. Seems like that would hold true with the .223 as well?
I remember years ago seeing people (with way too much time on their hands) making steel inserts to modify cases to take small primers in a large primer pocket, or soldering in flash 'tubes'. So somewhere along the line, some crazy person must have already experimented with this... anyone know of sources/links?

So, with that out of the way... I've always kind of wondered why there is no .223 Remington 'match' brass with a PPC/BR flash hole? I wonder if it'd be worth it for say, F/TR where we typically use single-shot bolt-guns pushing heavy-for-caliber bullets i.e. 80-90gn at mid to long range. Seems one of the limiting factors for .223 is trying to keep the ES/SD down... the PPC/BR flash hole in Lapua .308 Palma brass was ostensibly to reduce the ES/SD, and had the side-benefit of more meat around the primer pocket, thus longer brass life. Seems like that would hold true with the .223 as well?
I remember years ago seeing people (with way too much time on their hands) making steel inserts to modify cases to take small primers in a large primer pocket, or soldering in flash 'tubes'. So somewhere along the line, some crazy person must have already experimented with this... anyone know of sources/links?