03-03-2024, 07:42 PM
300 Blk, that is the difference between the tangent (more stubby) ogives of the Hdy/speer and the secant ogive of the sierra tgk. In a few of my 6 Arc barrels (one of them is a faxon) the 90 tgk seats to lands at 2.338-2.350, yet many "regular" tangent bullets are more like 2.200 give or take. The tgk's seat way beyond the mag length for an AR. So in the AR I typically use them at 2.260-ish.
+1 on the gmx vs a cup/core, that's why I don't typically mention the 80 gr gmx/cx data much, most shooting is done with c/c bullets.
+1 on the gmx vs a cup/core, that's why I don't typically mention the 80 gr gmx/cx data much, most shooting is done with c/c bullets.