I would run some 450 ammo thru every other Savage I could get my hands on to see what other *standard rotor might work. Again, I could do that for you here but timing is bad. I have 450 ammo and almost all the Savage rifles to check. Some of the Savage rotors are pretty "open", not cut for bottleneck cartridges, if you will. Cartridge guide is critcal as well.

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An 8 dollar driveway boy living in a T-111 shack

LOL