Data 4197 powder

[Hammer47]

Just picked up a rather large stash of Data 4197. I assume this is a slow lot of 4198 but am otherwise clueless. What can you folks tell me about this powder?

[ronbo]

I bought some Scott brand powder years ago that was marked 4197 1 lb cans but have not used it yet,

[Rocky Raab]

Scot 4197 was described as " a cooler-burning tubular single-base powder approximately 1-3 grains slower than IMR or H4198. Very similar in burn rate to Reloder 7. ...Formerly Herters No 103."

However, I have no way of knowing if your Data 4197 is the same powder or anything like it.

[wiljen]

Be careful with that stuff. Data 4197 came in several different lots and no two are exactly alike. All tend to spike rapidly and are sometimes mistakenly thought of as fast powders because of the steep initial pressure rise.

Look at the bottom of the Jug for a little label.

"144 4" is the fastest lot. It has a VERY sharp initial pressure curve w/ a long burn rate. It is similar to fast N-133.

"13994" is the middle lot kind of a slow N-133.

Any other # is the slow lot and is very near N-135.

again, this can be flaky stuff with a rapid initial pressure rise so start well below max and work up. It can be a useful powder, but has its quirks and should not be thought of the same as Canister grade Brigadier 4197.

[Hammer47]

Never thought to look on the bottom...... there are 10 eight pound jugs of this 4197 by Accurate arms, eight of which are the mid speed, one is the fast and one has no sticker. Sure glad you aleted me of the difference in lots. Dunno how to handle the one with no tag, just assume it is the fast stuff and go from there.

What has been your experience with this powder?

[wiljen]

It is a good powder in most of the same applications as 4198. I like it in the big bores fairly well.
In small bores it is at its best with light bullets and gets spiky quick as weights go up. I would take a look at the data for VV N133 and figure that things it works well in are probably good candidates for this powder.


On the unmarked can, safest thing is to assume it is fast lot until it proves otherwise.

[Hammer47]

I use a lot of N133 in the 220 Russian and the 6PPC in benchrest so this may be a "find" Thanx for the input.

[Stonewall]

Scot 4197 was used in short .22 P.P.C.
If that is what it is a post on Benchrest.com will get you started with loads .

Glenn