01-15-2018, 12:48 AM
From my experiences with 2 6.8 SPC ARs, even when running boxed SSA ammo with an adjustable gas block, the 6.8 SPC is pretty hard on every part of a bolt.
I have an early 'snowflake bolt' that would be somewhat comparable to what you're suggesting. It's face stretched to 11mm in fewer than 1000 rds and I started having extraction issues.
I've run superbolts or something similar since then. Strangely, right now I have a 9 yr-old snowflake bolt in a 16" 6.8 RRA after wearing out the lugs on an ARP bolt (Top in the photo below). Not going to buy another until I see how my new Grendel build performs. Might re-barrel the RRA for 65Grendel or another 223...
Those side walls are gonna be mighty thin if you carve them out...
The worn snowflake bolt below (middle) has a 1.37mm wall at its thinnest point adjacent to the bolt face.
3Bolts:
Top: ARP Superbolt
Middle: Snowflake
Bottom (black): new 223
[ATTACH=CONFIG]10789[/ATTACH]
Not saying it can't be done. Just saying build a 300BLK pistol instead.
I have an early 'snowflake bolt' that would be somewhat comparable to what you're suggesting. It's face stretched to 11mm in fewer than 1000 rds and I started having extraction issues.
I've run superbolts or something similar since then. Strangely, right now I have a 9 yr-old snowflake bolt in a 16" 6.8 RRA after wearing out the lugs on an ARP bolt (Top in the photo below). Not going to buy another until I see how my new Grendel build performs. Might re-barrel the RRA for 65Grendel or another 223...
Those side walls are gonna be mighty thin if you carve them out...
The worn snowflake bolt below (middle) has a 1.37mm wall at its thinnest point adjacent to the bolt face.
3Bolts:
Top: ARP Superbolt
Middle: Snowflake
Bottom (black): new 223
[ATTACH=CONFIG]10789[/ATTACH]
Not saying it can't be done. Just saying build a 300BLK pistol instead.