We were shooting Federal Fusions…. Then started getting too many squibs. Wife missed out on a deer due to a squib. I switched to Hornady Superformance for my 30-06 and Leverolution for her 30/30. I have since switched to hand loads
One is too many, and you say you had several?
With today's quality controls, I would start looking at the rifle.
Fusions aren't my first choice for most of the shooting I do, simply because I usually only use hand loads.
I have shot off a lot of Fusion ammunition through an SKS and Howa 1500 chambered for the 7.62x39. At least 2000 rounds through each of them.
I picked up twenty five boxes of 200 rounds from an estate sale, just before Covid started all this mess.
It shoots consistently into 3 inches from the SKS, which was a non refurb, new in crate Russian when I bought it, and about 2 inches from the Howa.
I've had the Howa have failures to fire, and a couple of hang fires, with some surplus Chinese ammo, but never any issues with the Fusion.
The SKS just gobbles up everything it's fed flawlessly. Never had a failure to fire or hang fire with it.
I'm thinking the hammer spring on your 30-30 lever action is weak, or you have a firing pin tip/protrusion issue.
One "squib" can happen with any brand, no matter how expensive, but several means a mechanical issue with the rifle is your issue.
I find Federal primers, which I would assume are used in Fusion ammo, to be softer than most others.
Fusion brass is excellent to reload as I get at least 4 shots before annealing.