Feat happened here (from 0:30 to 0:55)
According to this site, the average human arm is 25 inches or 0.635m
Kyle's Arm = 131px or 0.635m
Hole width = 20px or 0.09m
Hole height = 253px or 1.22m
Hole length = 166px or 0.80m
Volume of a Recatangle = 0.088m or 88,000cm^3
Energy of Violent Fragmentation (69 j/cc) = 6,072,000 Joules (Wall level)
A T-800 easily shrugged off getting hit by two of these grenades, so this should certainly scale to their durability.