Date: 29/9/2015
Reference No: 7502
To: Blair Marriott
Thank you for your enquiry on 28/9/2015 with regard to reloading using ADI Sporting powders.
Unfortunately we have no test data for 357 Magnum loads using AP100 with a 155gr lead projectile.
As you can imagine, there are a vast number of different firearm types and components and it is impossible to completely cover all possible loads.
ADI does have a strong commitment to supply data for the most popular loads in use in the Australian and New Zealand market. This requires us to undertake our own test firings using specialised proofing equipment. Alternatively, we may supply load data by exchanging data with our American distributor.
We do not currently have the resources to conduct the test firings which are necessary to develop the loads. We have also checked with our American distributor and they have no load data available either.
If you would like to go through the process of experimental load development we suggest you base your starting load on the attached calculated data attached.
ADI have not physically fired these loads, so ensure that you begin your load development at the suggested starting load and work up to your safe optimum load in small increments. Carefully monitor your pistol and cases for signs of excessive pressure like badly flattened or crated primers or difficult extraction.
We thank you for using ADI Sporting Powders.
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