Right quite new to reliading my own but always used hand load ammo.

Im trying to develop a nice 100gn load for my 243 win

Ive a good supply of Vetan TU5000 and using CCI LR primers and Seirra Gamekings

right with 32gns I have a very stable touching group at 100m but it's very slow only just deer legal.

So I've started off looking for the second nore and at 35.7 Gns it should be a fast load book saying 2900fps ish but I'm only getting 2660fps.

Anyone else had this or any advice ideal Id like to be around 2800-2900 fps so I've a nice flat shooting round to 200ms