Just ran data thru online calculator and it agrees with u. I don't have my targets or Nosler reloading book here and the page has disappeared somehow from iphone so I'm SOL to argue. I do have the note on the 260 with 140 gr Factory Corelokts and my note and the calculator shows a similar discrepancy some of which may be due to field condition sight-in using ATV seat as rest back in September.

Guns were zeroed at 300, then 200 sight checked with results as remembered and posted. If remembered correctly my field shooting was close to Nosler reloading manual chart. Of course I might have effed up!

Field trials on animals worked as expected using my sight in so for now I'm good since I'm meat rich for a year. Retest is obvious in order however... smile
Besides, I want to try it out at 400 and 500 which I haven't done yet.
Being short of ammo not available in village i'll have to retest after x-mas trip to anchorage. Weather permitting.

The only true cost of having a dog is its death.