View Full Version : AA9 for the 218 bee
bigdog454
05-01-2023, 02:16 PM
Does anyone have any load info for the 218 bee, using a hard cast 44 grGC, or a 55 grGC, with AA9 powder or wc820?
Thsnks BD.
racepres
05-01-2023, 03:57 PM
My 22-30 is same case capacity as 218 Bee... I only used AA1680, With Jacketed .222's, or AA#5...
and, of course Unique, with cast...
My Understanding, right or perhaps wrong... was that #9 acted like 296/110... mainly for Higher pressure... so... may should have tried it with Jacketed!!
MT Gianni
05-01-2023, 07:02 PM
Hard cast takes up more questions than it answers. If you were using water dropped PC WW alloy I would advise you to use starting loads for jacketed. Hard cast to me means purchased with no idea of what kind of junk lube and fit you have.
bigdog454
05-02-2023, 11:07 AM
What I consider hard cast is boolits cast with linotype or an alloy of equal bhn.
racepres
05-02-2023, 12:33 PM
What I consider hard cast is boolits cast with linotype or an alloy of equal bhn.
I guess I will be Zero Help... Never used truly Hard Cast...
Sorry
bigdog454
05-03-2023, 10:58 AM
tested my linotype, showed a hardness of 28.5 bhn. now I dont have a full lab to do this test so it may be off a little.
BD
johnly
05-07-2023, 11:31 AM
GRT shows these results with a 58 gr. Lyman 225462 out of a 20" barrel
10.0 AA#9 2402 fps @40k psi
9.5 AA#9 2314 fps @35k psi
9.0 AA#9 2220 fps @31k psi
8.5 AA#9 2120 fps @27k psi
8.0 AA#9 2016 fps @23k psi
7.5 AA#9 1913 fps @20k psi
At these speeds, I'd be shooting linotype.
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