seating off the lands

[Thwackaddict]

How do i figure out my oal to get the bullet seated off the lands in My No.1 7 STW? i know i cant reach em with my 100gr sierras but with 168gr matchkings and 140 nosler BT's? Thanks for looking

 

[JackinSD]

One of the easiest ways is to purchase and Over All Length Gauge.

Something like this one from Midway: Hornady Lock-N-Load Overall Length Gage Bolt Action

The following article gives a pretty good explaination: Real Guns - Gauging Success - Minimum Headspace and Maximum COL