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WST Bianchi Loads


Service Desk
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I have been doing some research on the new ADI powders APS350 and APS 450. APS 350 is essentially old AS30, which in essence is Hodgdon Clays, works OK with 125gr (3.7gr), not so with 115gr. Looks like APS450 is not an exact swap for AP50 (Intl Clays). Accuracy is OK, just not as good as I get with Titegroup, 231 or WST, at this stage.

 

WST at 4.8gr is maxed out in my guns. I found it to be a little too fast burning for the way my gun works. Much prefer Titegroup, which is essentially WSL, for my guns. 

 

APS450 being a tad slower burning works Ok with 115gr at around 4.7gr (1150fps) with Zero's at 1.225" OAL. Good enough for practice if you are short of US made powders.

 

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Winchester have stopped importation of powders for an indefinite period of time....so supplies of the favourites, WST and 231 are drying up fast in Australia. I have just broken into my WST stockpile and found that 4.6 grains with a 115gr HAP shoots pretty nicely and feels real soft compared to 231 or VV320. I still have AS30N, ClayDot, AP50N and AP70N for practice...

Edited by Service Desk
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Be very careful with WST it is Inverse Temperature Sensitive, it loses velocity as the ambient temperatures rise.

 

I noticed it in the 90's with 45 acp and just this year a buddy went sub-120 PF with it at the 2019 MW ICORE Regional using 38 special, he had chrono'd it at 50-60 degrees and it was in the upper 90's to 100 at the match.  He went from 800+ f/s to barely 700 f/s.  Which was similar to what I had found.

 

It may be popular so just be aware of it.

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Winchester Australia, (Olin Corp) will soon be just a warehouse for imported items. Bringing Powders in from USA is now murderously expensive. A 20Ft container packed tot he rafters has about 11Tonne of powder and costs about $35K US to get from Hodgdon to NZ. Probably same to get to AUS, so anyone there had better find a way of using ADI. Not sure about any other brands, but anything out of the EU is likely to be an easier bet for the short term.

 

 

 

Edited by gm iprod
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