Results; shot prone off front and rear sand bags without any breaks. Barrel got hot but not so hot you couldn't hold your hand on it. Shot in the order of this list:
Cold bore but not cleaned.
123gr Hornady A-Max
Velocities FPS: 2988, 2996, 3007, 3012, 2997 ES: 24 fps
130gr Sierra TMK
Velocities FPS: 2909, 2899, 2899, 2898, 2896 ES: 13 fps (group was .447")
130gr Hornady ELDM
Velocities FPS: 2893, 2888, 2890, 2891, 2892 ES: 5 fps
139gr Lapua Scenar
Velocities FPS: 2858, 2861, 2850, 2852, 2853 ES: 11 fps
136gr Lapua Scenar L
Velocities FPS: 2904, 2898, 2891, 2898, 2899 ES: 13 fps
143gr Hornady ELDX
Velocities FPS: 2855, 2878, 2835, 2832, 2848 ES: 76 fps
Remember this load was lightly compressed due to the longer bullet, this is typical of a compressed load of RL16, the ES jumps and the groups open up. This barrel has shot half inch groups with the ELDX with 39.5gr of RL16 at 2780fps.
130gr Berger VLD Hunter
Velocities FPS: 2904, 2909, 2904, 2900, 2906 ES: 9fps
123gr Lapua Scenar
Velocities FPS: 3001, 3008, 2993, 3002, 3003 ES: 15 fps
So the groups were nothing fantastic but that was expected with a full case, the RL16 seems too like a bit of room to move. the TMKs and VLDs both did ok and this has in fact been my hunting load. Id be willing to bet most groups could shrink up to half that with .5gr to 1gr less powder. It has not been a fussy barrel which give plenty of options but I am seeing a preferred weight of 130gr with the RL16 with 40.5gr to 41.5gr performing really well.
I should probably get a bunch of other 140gr bullets to test too, they seem to sit best around the 2800-2850fps mark in this barrel.
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