Interesting, I would have thought leftover 22" Chicopee Falls barrels targeted for 99Fs would have have been barrels with a barrel boss on them; even the smaller caliber .243 and .250-3000s pre-mil 99Fs had a barrel boss.
The early 99E barrels were 22" with Chicopee marked barrels. I would agree with Rory, the most likely reason for the barrel on this 1964 .284 99F is there was a 22" Chicopee barrel left over that had been stamped Chicopee, but had not been bored and chambered.
Also I don't think Savage had a .284 premonition while still at Chicopee,; probably wasn't even on Winchester's drawing board yet either.
Hadn't thought about the rear sight bosses on the 99F's. That's an interesting point.
