10-26-2023, 08:38 PM
Its kind of weird that many of the factory bolt guns show noticeably-lower velocities with factory ammo than shorter barrel AR-15 Grendels.
I noticed it with the 22 Howa as well.
22 Lilja AR-15
2550-2600fps with 123gr
17.6 Lilja or LaRue 18 Stealth 2.0:
2511fps with 120gr Scenar-L factory
2441fps with the 123gr American Gunner
2457fps with factory 123gr Hornady SST
2490fps with 31.2gr CFE223 under 123gr A-MAX
Howa Mini 22
2458fps 123gr American Gunner
2592fps with my 31.2gr CFE223 123gr A-Max load, which is what I see from the 22 AR-15
I wonder if the chambers are just more loose on some of these bolt guns. My shoulder data with fired cases was interchangeable between the Howa and AR-15s when I measured them with my Hornady comparator. I should have measured fire neck diameters.
I noticed it with the 22 Howa as well.
22 Lilja AR-15
2550-2600fps with 123gr
17.6 Lilja or LaRue 18 Stealth 2.0:
2511fps with 120gr Scenar-L factory
2441fps with the 123gr American Gunner
2457fps with factory 123gr Hornady SST
2490fps with 31.2gr CFE223 under 123gr A-MAX
Howa Mini 22
2458fps 123gr American Gunner
2592fps with my 31.2gr CFE223 123gr A-Max load, which is what I see from the 22 AR-15
I wonder if the chambers are just more loose on some of these bolt guns. My shoulder data with fired cases was interchangeable between the Howa and AR-15s when I measured them with my Hornady comparator. I should have measured fire neck diameters.
NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com