Not entirely still getting some that fail to fire on my reloads...(crushed primers?)I'm having the same issue with my Savage Axis II (.223) as my ftf is ~3 in 10 now (and getting worse). Did this solve your issue?
~ Mike
Had 2 commercial loads that failed to fire I found that the shoulder was bumped back about .020" on those rounds. Tore those down replaced the primers with some CCI 400s loaded em back up and they worked just fine on the next trip.
Lessons learned
1.) keep the head space on your rounds with in .002"-.006".
2.) commercial rounds may have excessive head space.
3.) lighter non-magnum primers work better in the axis rifle.
4.) don't crush your primers when seating them.
Next steps is to replace the springs the Gun Shack has them https://www.gunshack.com/savage-parts?product_id=3421
For the most part I am satisfied with my cobbled together fix... My axis is a target rifle only so if a round fails to fire it's not a real big deal just lost time and a missing data point.