Home Forums Hunting & Shooting Custom Rifles & Wildcats 22 Creedmoor

Very nice group.

I brought the Magnetospeed with me yesterday, and my velocities were much slower than I expected. I am running 22 CM Peterson brass (capacity = 49.8gr of water) and Fed 210M primers.

75gr Amax (ave of 5 shots)
42gr RL26 -- 2825 fps (ES = 139 fps)
42.5gr RL26 -- 2889 fps (ES = 86 fps)


After seeing how slow they were, I just started shooting one shot each to get a ballpark velocity, rather than waste a bunch of ammo. I'll probably pull the rest, and pump them up a bit for the next range session.

75gr Amax
43gr RL26 -- 3016 fps

77gr TMK
40gr RL26 -- 2640fps
40.5gr RL26 -- 2704fps

80.5gr Berger Full-Bore
40gr RL26 -- 2728 fps
40.5gr RL26 -- 2719 fps



The 88gr ELDs don't seem to like my 1-8 Twist. The accuracy doesn't seem too awful, but some of those holes aren't very round. I did not get velocity readings for any of these.

I’d keep running up the powder charge in .4gr increments until:

You see excessive pressure signs
You run out of powder capacity
You reach published velocities

Whichever comes first.

Wouldn’t give up on the 88s until you’ve tried them at expected velocities.

John

Those are real interesting holes. I've never had those, they've ever been straight or sideways, not that "close to stable." Speed might settle them down, but be wise and pay attention to that chrono.

I would be pretty upset if that were mine and the 88s were a no go.