Nitrous on a 340 100 shot

TT5.9mag said
Square with sharp corners is good. My advice is above a few posts back. If you were nipping the end of the electrode I’d say pull 3 degrees out of it. But I’d need to see where your fuel is at to know for sure. You e got a little tune up work left to do. And you’re correct the best (ONLY) way to know what is going on in the chamber is by reading the plplug

I'll do another pull or 2 soon with 32* timing instead of 33 and let everyone know the results. For anyone wondering the engine combo it's a 340 bored 30 over with 10.5:1 , j heads, air gap intake, procomp xe268 cam, 780 holley, Doug's headers, msd ignition. Nothing crazy but a fun street car. Thanks again to all the helpful advice.