Due to deeper bullet seating - I use a 2.550" COL, i find Winchester 748 to be just a bit more sensitive to 100% loads and a bit finicky with regard to lever kick on a hot day. Win 748 loads kill deer just fine. 49.0 grains is about all I can get under a 200 grain bullet and it gives 2,485 fps+ in my Winchesters.
I like Alliant Reloder 10x, 44.0 grains will get 2,490 fps with the 200 grain bullets and no other things to think about.
Reloder 10 will give both top velocity and accuracy. Experiment to see which crimp your bullets like best.
With the 220 grain Speer 39.0 grains of IMR 4198 is hard to beat day in day out. This load will top 2,360 fps easily and give good accuracy with a toungue of red flame. Hodgon 4198 will do the same.
50.0 grains of Hodgdon Varget is right beside it.
46.0 grains of Hodgdon 4895 will break 2,300 fps with good accuracy and no surprises on a hot day.
That will give you a few options to consider.
Last edited by william_iorg; 09/06/20.
