04-19-2018, 12:37 AM
First of all, assume nothing!
The most important question in this is which bolt face depth is the barrel head-spaced upon? There are 2 bolt face depths in the Grendel:
1. the standard Grendel bolt which has a 0.136" depth.
2. The other type has a 0.125" depth.
You can measure both bolts if they are in your possession but whatever the barrel was head-spaced for, that's the depth of bolt you need to go with.
Depths are typically +/- 0.001"
Example: on the Brownells site for 18" Satern barrel, they have this description, notice it says 0.136" face depth:
"...Muzzle is threaded 5/8"-24 and the gas shoulder accepts 0.750" gas block. Chamber is 6.5 Grendel II. Opposite side of gas port features a dimple for a gas block set screw. A 6.5 Grendel bolt is included with each barrel. Bolt is machined from 9310 steel with a bolt face depth of .136". Barrel extension is M4 feed ramp style."
If the 2 bolts are the same depth and the barrel was head-spaced for that depth, consider yourself lucky, use 1 and keep the other as a spare.
But I would assume nothing. Check the literature/specs of your Satern barrel to ensure which depth it set for.
There are several threads on here about bolts and barrels and head spacing... Mix and match in this arena is bad joo-joo.
The most important question in this is which bolt face depth is the barrel head-spaced upon? There are 2 bolt face depths in the Grendel:
1. the standard Grendel bolt which has a 0.136" depth.
2. The other type has a 0.125" depth.
You can measure both bolts if they are in your possession but whatever the barrel was head-spaced for, that's the depth of bolt you need to go with.
Depths are typically +/- 0.001"
Example: on the Brownells site for 18" Satern barrel, they have this description, notice it says 0.136" face depth:
"...Muzzle is threaded 5/8"-24 and the gas shoulder accepts 0.750" gas block. Chamber is 6.5 Grendel II. Opposite side of gas port features a dimple for a gas block set screw. A 6.5 Grendel bolt is included with each barrel. Bolt is machined from 9310 steel with a bolt face depth of .136". Barrel extension is M4 feed ramp style."
If the 2 bolts are the same depth and the barrel was head-spaced for that depth, consider yourself lucky, use 1 and keep the other as a spare.
But I would assume nothing. Check the literature/specs of your Satern barrel to ensure which depth it set for.
There are several threads on here about bolts and barrels and head spacing... Mix and match in this arena is bad joo-joo.
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