I?m shooting the 5mm FMJ 340 with Blazers. They fly great with Stingers, ViperTricks and my new Iron Wills.
I don?t see why they won?t work with the 4mm.
just got 4 mm fmjs after shooting 5 mm for years. Always shot blazers and there working great so far. I should note that I?m using Easton?s 55gr half outsert so I can shoot standard threads. Blazers are real versatile I?ve found. Good luck
Built some 4mm injexions this year for elk. I'm running 2.1" Q2i Rapt-x vanes in 4 fletch configuration and four blade Tooth of the Arrow 100gr. tips with. 95 gr SS inserts. Total arrow weight is 491 gr.