fragmentation envelope

[thumper]

It has probably been addressed before but, i need to know what range will the PPU 75 grain bthp 223 ammo start fragmenting and at what range will it cease to fragment..I am using a CMMG gas piston m4 carbine 1/7 twist heavy barrel..In advance thank you..

[Keesh]

It's velocity dependent, so around 2250 +/- 50FPS

[thumper]

I contacted "Hornady" and they said their 75 gr bthp 223 will fragment at speeds as low as 1300fps with a 16inch barrel..This is not TAP or LEO TAP but standard 223 ammo..:DStill curious about PPU 75 gr..:confused:

[Zhukov]

I contacted "Hornady" and they said their 75 gr bthp 223 will fragment at speeds as low as 1300fps with a 16inch barrel..This is not TAP or LEO TAP but standard 223 ammo..:DStill curious about PPU 75 gr..:confused:

1300fps?

That sounds fairly optimistic...

(And I don't think it matters what the barrel length is - 1300fps is 1300fps. ;) )

[RWK]

It has probably been addressed before but, i need to know what range will the PPU 75 grain bthp 223 ammo start fragmenting and at what range will it cease to fragment..I am using a CMMG gas piston m4 carbine 1/7 twist heavy barrel..In advance thank you..

You're going to have to approach your question in a matter of degrees. Are you looking for 90+% chance of fragmentation, down to 50%, or lower? I don't have the answers but, wanted to help you frame your question for someone who may.

[RWK]

I contacted "Hornady" and they said their 75 gr bthp 223 will fragment at speeds as low as 1300fps with a 16inch barrel..This is not TAP or LEO TAP but standard 223 ammo..:DStill curious about PPU 75 gr..:confused:

Different bullets from different manufacturer's.

[thumper]

I need to know the lowest speed in fps for the bullet to fragment..That should give me the max range for engagement..:)

[hitman1012]

I am bit curious. Hornady says that their 75 grainers will fragment down to 1300 or so fps and I have read nearly everywhere that it is 2200 fps. I wonder which is correct. Anyone know for SURE. And yeh, I know it is dependenat on a few different factors but that is a dramatic difference.

Any testing done down to lets say even 2000 fps?