I am going to re-barrel a Kimber Montana to 22-250 AI and going to use a Lilja modified 84M contour. I want to try the 88 grain ELD-M but if it doesn't preform on deer and antelopeI will probably drop down to a 75 Swift Scorocco or 75 Hornady HP's for hunting.

I live at 3000 ft elevation and all the hunting I do with this rifle will be at this elevation.

Question 1-7 or 1-8 twist
3 groove or 4.

I already have die and brass so the Creed argument doesn't much matter.

Thanks