I had one in the early 90's, same .280 caliber. I had it reamed tot he 280AI, but it was a finicky shooter. It "settled down" with the Nosler 150BT and the Speer 160 HC. 2950 and 2800 respectively. I could only gain 50fps with accuracy. It would go faster, but all over the target, ha. I killed a lot of game with that 150 and 160, my friend used it to take a big old cow elk with the 160. I started out with a Leupold Compact 3x9, then settled on the VXII 2x7. It was too light to use well in the antelope prairies, the wind blew me and the rifle all over the place. I finally stalked a buck, crawled up into a snow drift fence to get still and popped him at 250. I had missed several that day out around 300-350 from the wind! It is a sweetheart in the woods/mountains though, have owned several MRs since,...all were finicky, usually settled on 1 to 2 weights. No problem, just the nature of the thing.
