01-26-2014, 02:35 AM
Lead Chucker Wrote:I measured my OAL to the lands using a dowel rod from the bolt face to where the bullet just touches the lands again today using 4 different bullets. Then used the same bullets to measure my dads 16" Stoner barrel. His was shorter on all bullets. The 16" stoner barrel i built for a friend in 2012 also has a shorter throat than mine & my dads. A 90gn TNT measures 2.227" in my 18" Satern, 2.190 in my dads Stoner, and 2.154" in my friends Stoner built a year ago. So YES the Stone/Liberty barrels are throated shorter, a year ago same as today. My friends Stoner shoots lights out with no pressure signs with my reloads. So my take on the stoner barrels are they have always been cut this way.
Can we compare measurements in our barrels with the recommended COL in the load handbooks?
In the present case, both Hodgdon and Alexander Arms load data recommends a COL of 2.200" for the 90 gr TNT in the Grendel.