And I was thinking - what, if any, - useful stuff might appear - if I compared the 300BLK directly with the 'Russian' 7.62X39mm - and the round that was specifically used in centre-fire 'Bench-Rest' competition 6MM PPC (or/and the .30" BR)
- Well you could have "knocked-me-down-with-a-feather" when I read on Wikipedia the following:
" .. around 1975, when the wildcat 6MM PPC, based on a modified .220 Russian case (which is itself based on a boxer primed derivative of the military 7.62x39mm), took over as the most accurate cartridge."
So, maybe there is some link out-there other than the one in my meandering thought! - or perhaps way-back I might have read something about this and it's quietly stored in some part of the mushy old brain.
And then we have:
3x 300 Blackouts(7.62x35mm), - a .223"(5.56x45mm), and a "Russian" 7.62x39mm.
And just for comparison - a .30 Carbine round (that is 7.62x33MM):
Or - just maybe - there's NO linkage at all really other than the reputed 'ballistic sweet spot' that is supposed to hover around 7MM plus or minus half a mm or so.?? - Is it that these are all just medium (intermediate) sized cases stuffed with a medium sized projectile ?
- Has anyone ever recently done a properly scientific analysis of this issue?
Anyone got a useful comment to add?
Marty K
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