Compression Ratio Question

I have a 340 and need help figuring out the compression ratio. The bore is 4.070 , as far as I know the stroke is 3.31. It has TRW L2322 domed pistons but the dome was milled down so that the dome is out of the hole .150. The heads are 71 cc and the head gasket is 8553pt .054 thick. The cam is a Lunati 703. 226 int/234 ex @ 0.50 duration and 494int/513 ex lift. 110* LSA. With those TRW "boat anchors" being milled down, Im figuring, with the 5cc valve reliefs its pretty close to a flat. I think its around 10. 1 . Oh yeah, I forgot to mention, cylinder pressure is 178 on 3 holes and 180 on the other 5. Do ya think Im pretty close to 10.1 or am I way off.
Thank you Bob