Lars, not sure I fully understand your reply, explosive articles are always classified together with their packaging on the understanding that if you change either you change the risk of transporting them.
so the packaging has everything to do with classification the competent authority will classify the article e.g. 1.4s, 1.4c, etc in the UK that is the HSE they do that based on the burn test evidence the manufacture supplies.
VCA/UKAS are the packaging side HSE competent authority for classification.
Possibly the 250/25 became the standard method long before clay shooting became as popular as it is today probably simple due to common sence in the early days but is now the established norm.
And if a manufacture introduces a new outer box it would need testing by UKSA approved tester which is not cheap to do. Likewise a new cartridge by the HSE but this can be done by analogy.
so the packaging has everything to do with classification the competent authority will classify the article e.g. 1.4s, 1.4c, etc in the UK that is the HSE they do that based on the burn test evidence the manufacture supplies.
VCA/UKAS are the packaging side HSE competent authority for classification.
Possibly the 250/25 became the standard method long before clay shooting became as popular as it is today probably simple due to common sence in the early days but is now the established norm.
And if a manufacture introduces a new outer box it would need testing by UKSA approved tester which is not cheap to do. Likewise a new cartridge by the HSE but this can be done by analogy.
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