TIPS for LONG RANGE shooting accuracy! Ever notice that you are dead on at 100yds, but right or left at 300yds...!? light bulbI now get GREAT centered groups at 500yds..., after I finally figured out how!?- MT’s #1 gunsmith & Leupold techs, put me onto my solution! -I just took my Caribou at 489yds!- Tikka T3 .338mag (Federal Premium), Swarovski TDS scope (100 to 500 yd marks), Leica range finder (a rangefinder, is a MUST!). Here is the problem!- 1. Your scope has to be “!perfectly!” aligned to bore (1” dowel..., doesn’t do it!)! 2. Then your windage crosshairs have to be “!perfectly!” vertical to bore (tip!- level your rifle when shooting long distance!). My ultimate FIX!- Notes!: This is MUCH easier with 2 people!- one to hold gun steady/sight down scope..., while tightening screws! Blue loctite ALL screws (stock to action also!)! 1. Center your scope to bore “!perfectly!” - Put your rifle in a gun vise, and put a laser full chamber/bore dot (I used Cabela's...), on a far wall... a. Now center your windage crosshairs to dot- total stop-to-stop turns, divided by 2... b. Turn screws on rear ring mount, and “!perfectly!” center on dot . 2. Level your crosshairs “!perfectly!”...!- Note: I’ve tried “several” crosshair leveler tools..., and finally got the GREAT/easy one my gunsmith uses!- “EXD ENGINEERING VERTICAL RETICLE INSTRUMENT" (leveler too!) (Brownells)). Want to check your scope alignment?- Level your rifle, hang a plumb-bob string on far wall..., and see if vertical crosshair is “!perfect!”!? 3. Now go range, & fine tune! ENJOY!