Still Experimenting Loads for the 280 AI

[sgt_zim]

I want to try the 160 Shock Hammers, and Staball 6.5 and N560 seem to be the best performers for it.

But.

The test loads were out of a 26" barrel, and mine is only 22".

I also am about to test 175 North Forks out of it.

I have about a half pound of H4350 left, which works pretty well with 156 gr Oryx.

Are staball and n560 too slow for a full burn out of 22" and those weight bullets? Hammer shows 3140 and 3160, respectively, so I'm guessing my best for either 1 out of my rifle will be probably around 3050 for the 160 gr Hammer; and maybe 2750 for the NF.

Other powder I have on hand is IMR4831, Ramshot Magnum, and 2000MR (though that seems a little too fast).

 

[Nicholas Barcomb]

Ummmmmm, I tried some 160 HPS out of my 280AI (24" bbl) with N555 and got pressure signs right on the first shot. Never tried anything else with those bullets. N560 will be a little too slow burning. I'm currently testing some 145 HHT (Hammer Hunter Tipped) in my 280AI and have found N550 to be the best ballistic model so far. Will be putting it on paper for true data, soon. Good luck, and stay safe!!!