How old of Model 99 rifle? If it has the brass rotary internal magazine it is old, I was told the hardening of the receiver was softer than the newer rifles and stretched the brass after 2 or 3 shootings. My 99 I tracked back to the early 40's so I left it alone. A lot of new brass now is up to $1.00 each but at least .300 Savage is available new. I make my .260 AI out of .243 or 7mm-08 brass.
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