With a stock hammer spring it will ignite anything.
I've not had much luck with consistent ignition with a light hammer spring in mine.
It was working well with a 15lb spring and Dave's pin, but the next batch of CCI SV started getting light hits.
I went back to the stock spring and pin, but ordered an assortment of Wolff springs to try.
It's due for a cleaning...yeah I know Joe
...I'll try a 17lb spring and go back to Dave's pin.