IMR 4166?

[Bearcatrp]

Saw gunstop had this as a new powder so picked up 1lb. From what I have read so far, good for 308, which I reload for. Anyone that has tried this care to comment on likes or dislikes? Grabbed 700-X and varget while I was there too.

[JJ]

It's so new, I had to google it, cause I'd never heard of it. The press release I found was from 10/20/14. I doubt anyone has spent any real time playing with it. He'll, I'd bet most haven't even seen a jug yet.

Do some loading, let us know how it goes!

[Bearcatrp]

Will do. Been using IMR 4064 but will load some of these up to see what its like. Trying to find load data now to find a good starting point.
This is what I found so far... http://www.hodgdonreloading.com/data/rifle
Question though. Data chart shows for 24 inch barrel. Mine is a 16. Should I reduce some or just go with minimal and work up, keeping an eye on the brass for signs of to much powder?
I see what I punched in didn't stay with the link. I shoot 150 gr FMJ hornady and 168 gr A-Max hornady.

[JJ]

Start at Min, or 10% below max, and work up from there.

Pretty much all data sets are generated with 24-40" test barrels. That information is for reference only. Always start low and work up.

[Rip Van Winkle]

Barrel length has no bering on chamber pressure. The only difference you'll see with a shorter barrel is lower muzzle velocity.

[Seismic Sam]

Call the good folks at Quickload. They didn't have data for AutoComp powder for my 9x25 SSX, but they had received a "hint" from somebody about what 4166 is similar to. Seeing as I can't remember the conversation exactly, I'll let you get if from the original source.

[solidgun]

I have been considering this powder for a while to replace Varget. But I have so much of the rifle stuff that I am going to wait until Summer when I can do proper testing. I wanted a small batch to do cold weather testing, but I want to buy that 8lb jug to keep it consistent if there any issues with this new powder.

[Erud]

Why would you ever want to replace Varget?

[samginko]

Why would you ever want to replace Varget?

Only problem I find with varget is that, it does not meter well in my Dillon. But, I agree. Unless it meters better, "stick" to Varget.