M193

[Dirt_Nap]

Doing some load development and not necessarily trying to copy m193 but my current load of 23.8gr TAC with 55gr FMJBT is getting about 2450fps out of my 14.5".


Tested some IMI M193 and I'm getting about 2850 out of the same 14.5"


Not trying to push the envelope but my Hornady book shows max 24.7gr.


Just wondering what's realistic for this load

 

[243winxb]

Hodgdon has lots of 55 gr bullet data, with Tac. Listed maximum. https://hodgdonreloading.com/

My M16A1 , 14.5" barrel does 2700 fps (measured) with IMR4198 & 55gr Win fmjbt. Hodgdon data.
Maximum-

25.8 Tac

3,293 fps 24"

54,900 PSI @ Hodgdon

Bullet: 55 GR. HDY FMJBT