I have and am also playing some with 4198 and results are comparable. May work some more with it.
However, right now, I have a good supply of 1680 and it works.
I could or would take 50-100 cases, if you could spare them. Let me know a price.
I'm afraid I sent two PMs Didn't think the first one went thorough.
Oh well, some day I'll get the hang of this.
I'm getting about the same results with the 1680 but I believe with the current situation 4227 might be easier to find. I started off using VV N120 but it doesn't work any better than 4227 and its a hell of a lot more expensive.
Never would have tried 4227 had I not read it in the book. When I run out of things to do I've thought about trying a full case of 4198 as PO suggested.
The 17 hornet is a really fund cartridge.
I have a pretty good stash of hornet brass and could spare a little if you are running low. Don't want the varmints to go unmolested.
Bob
Bob: That is funny. As I am also using one load of 11.2 4227(IMR) with the 15.5 NTX and doing just about equal to yours.
I also have a load of 11.8 AA1680/15.5 ntx, that is right in the same ball park, 1/2 inch and smaller groups and 3800 ish. Both do a number on varmints, up to the size of Rock Chucks, within 150-200 yrds. Bill K
Bill
Back aways I sent you some info from PO Ackley's book on loading the 17 hornet.
What did you finally settle on and what kind of velocities and groups are you getting?
I've been using the 15.5 NTX and 11.2 grs of 4227. Velocities are around 3850 with 5 shot groups averaging around 3/8" and sometimes a little better. Probably would not have tried 4227 were it not for the book
Thought I'd check and see how you are doing.
Bob
Bill. Does your Valkyrie hold any more powder than your 20-223ai? I was thinking of necking down a Valkyrie to 20 caliber. I’m not sure I would gain any capacity with the Valkyrie. Thanks Larry
Knifeman. I would say you would be in the area of 3600-3700 fps, maybe more. My shooting partner and I both have the 20-223ai ( 20 Practical ai/ 40 degree shoulder) and we are in the 3900-4000 FPS range with the 32 grain bullets and push it with the 39 grain.
I think you will like the 20 Practical ai very much. When you do get it going, let me know the FPS you are at, though a chrony. Bill K
Bill. I'm thinking of building a 20 practical AI. I believe I read you have one? I'm planning on using 45gr bullets. What speed do you think I'll get? Thanks
About Me
About Bill K
Biography
80 years young and still going.
Location
N.E. Kommie Kalifornia
Interests
Shooting, Fishing, Hiking, wanderin the sage and mountains