smleno1mkIII
New member
Loading for 8mm trying to duplicate the German S round, using pulled Turkish 154 gr bullets loaded 50 grains of Imr4895, I’m getting 2780fps over the crony which would be correct according to my load book out of a 23.6in 98k barrel,problem is I’m using my m38 Turk with a 29.1 inch barrel so that extra 5.5 inches of barrel nets no gain what gives my load book lists 50.4 gr max load should get 2800 FPS out of a 23.6 in barrel with a 150 gr Hornady Sp help me out what am I not getting.