I have shot thousands of rounds of theirs and buy from Brad's Guns and Ammo out of Bonney Lake. He's a top Washougal dealer and has a direct line to them (and is friends with the owner). While I have never had a squib, I have had a primer or 2 that have needed a second strike.
I would suggest talking to Brad 253-314-7833 to see if there is anything he can do?
Also, well done for recognizing the sound of a squib and stopping before more damage was done.