Originally Posted by
Southerner223
Have just been through this journey myself, started with 2225 and 165gr Sierra TGK at 84mm-mag length,
These were all over the show through .5gr powder increments and being mag length the powder was slightly compressed, thought since its mag length i need a slightly quicker powder to take up less case capacity, purchased 2217,
First group at 69gr with the TGK, just under an inch grouping at 100. Then worked up to 71gr and the TGK stayed about the same, however at this same time i was also doing ELDX 162gr, was considerably better, nearly all powder weights i tried they were touching or slightly off, if anything was me shooting off a bipod on a sunny morning.
Rifle is purely set up for tahr and thats why i chose the ELDX being abit harder than ELDM, possibly if you want to shoot deer could use the ELDM and ELDX as they possibly might have the same POI. Mines a basic set up with a T1 brake and Swaro Z5, am bedding it in the coming weeks and will test the loads over a chrono,
This was my experience so follow normal reloading precautions as always, 71gr is book max but has no pressure signs