Spear did note he was loading long at 3" rather than the 2.8" sami standard, this will lower pressure or allow for more powder.
Still need to run through a model ie GRT etc.
Z
Spear did note he was loading long at 3" rather than the 2.8" sami standard, this will lower pressure or allow for more powder.
Still need to run through a model ie GRT etc.
Z
The difference from loading to a longer length and increasing the powder charge to fill the space is very small as is the extra velocity from improved cases. There is a method for calculating this so I ran the numbers. It works out to an additional 17 fps. Many claim large increases from loading long or AI cases but most of this comes from more pressure.
Regards Grandpamac.
Last edited by grandpamac; 23-01-2025 at 10:29 AM.
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