It’s here! Load development for the 17-222

[Branxhunter]

So here are the velocities for the loads tested using powder I had on hand (I do have BM1 but didn't try it). All with Rem 7 1/2 primers in Lapua cases and 20gn v-maxes.

AR2207
17.2gn AR2207 - 3590 fps

BM8208
20.0gn - 3727 fps
20.2gn - 3686 fps
20.4gn - 3768 fps
20.6gn - 3798 fps

AR2206H
19.7gn - 3489 fps
19.9gn - 3526 fps
20.1gn - 3518 fps
20.3gn - 3542 fps
20.5gn - 3673 fps

BM2
21.0gn - 3857 fps
21.2gn - 3953 fps
21.4gn - 3948 fps
21.6gn - 4000 fps
21.8gn - 4033 fps

AR2208
20.4gn - 3408 fps
20.6gn - 3418 fps
20.8gn - 3461 fps
21.0gn - 3508 fps

Marcus

[billsshed]

Isn't 3500 a bit slow?
I can do 3600 out of my 17H
The 3800 looks a bit more respectable or am I expecting to much?

Sent from my SM-G960F using Tapatalk

[MISSED]

I was getting 4050fps out of my 17 furball with Twenties and BM2

[jacksaligari]

So what speeds are we aiming for with the 17/222 ?

[Branxhunter]

Given I have seen absolutely no pressure signs so far I reckon 4100 fps should be achievable with BM2, and 3900 fps with the BM8208.

Given here isn't a lot of load data around that's why I am trying a few different powders and posting the results here. All the loads have been easy to extract (extraction of this old action is not a strong point), primers showing no flattening, and powder volume ranges from in the shoulder to base of the neck - no compressed loads.

Marcus

[Branxhunter]

Field test success



Marcus

[kickinback]

Noice.


Sent from my iPhone using Tapatalk Pro

[trevort]

Buts it’s not properly dead without all the loads tests first


Sent from my iPhone using Tapatalk

[Ol 55]

Field test success



Marcus

That will do it
Gary

[macca]

Dead is dead and that means it's a success regardless of speed in my book.
Happy testing.

[Branxhunter]

Some more testing this morning. Just to confirm the 22.8gn load for grouping, and I might be done.







I also ran up a few more 0.2gn increments for BM8208. BM2 is still the pick.

All loads were easy extraction, no pressure signs.

Marcus

[jacksaligari]

That’s more like what I wanted to see Marcus 4000plus FPS,makes me want one

[Camel]

Good gains in speed for such small increments, stoke her up.

[billsshed]

Now it is scooting

Bill

[trevort]

Is that the generous Chrony?


Sent from my iPhone using Tapatalk