11 October 2015, 22:47
Joe21458 winchester load data imr 4320
Anyone have any load data for the 458win using imr 4320? Specifically with a 450gr Barnes x bullet. Doesn't seem to be too many loads out there for the 458. Most loads I've found are for 510gr winchester soft point. Need some info to tide me over till I can find a jug of aa2230.
12 October 2015, 06:30
ledvmTac, X-terminator or IMR 8208 XBR are decent alternatives to AA-2230 (my personal favorite too). IMR 8208 is actually about as good or an equal to AA-2230 in the .458 WM.
12 October 2015, 07:29
Scott KingHey Joe,
Doc Lane turned me on to AA2230 and I've never looked elsewhere. Accuracy is superb, terminal performance the same. redouble your efforts man, just get the AA2230.
12 October 2015, 15:34
shootawayYears ago the 458win made a popular discussion on AR.
AA2230 is by far the best powder.It can give Lott like performance with no pressure issues-it is accurate too.
13 October 2015, 04:49
Joe21quote:
Originally posted by Dogleg:
Try 74 grains of 4320.
After some debating that's what I decided on. Shot a couple yesterday and they went boom without issue. No chrono but judging by the damage done to the tree behind my range and the tree behind it I'd say it was getting along fairly well

13 October 2015, 19:58
DoglegAtesdt it passed the tree test, and will keep you shooting until your A2230 shows up.

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