what l have found is that using seating depth to fine tune after an OCW test does give you results when tested at longer distances eg... 300y
but l have always found that when l find my sweet spot from the OCW that is as good as it will be consistently
the extra seating depth tests are just fine tuning and you will see the differences at long range only
l have looked into OBT through Chris Longs web site and use quite a bit of his knowledge, he is a very intelligent, helpful and kind man but my figures have never been the same as his, l am not saying his figures are wrong just different
once l find the sweet spot in my rifle and use the barrel time numbers l find into quickload with different components and rifle with same barrel length it is the sweet spot, it works every time without real world OCW testing
to be able to do this though you have to know how to use and tweak quickload as Chris Long explains on his web site
there are a few things that can change things that have to be considered eg.. being a loose bore or a tight bore
l hope you understand what l'm trying to say
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