70-80 grain loads

I still have some data on my 69 grain loads from the old site, but I finally have some new data for my 77 grain loads. I have been testing out some heavy subsonic loads for use with a suppressor in both the handgun and the rifle. Ever since I bought some Lapua 69 grain Scenar BTHP for a .223, however I had always wondered, every time I saw them on my reloading bench, about loading them in a 5.7x28 cartarige. One day I couldn't ressist. I found a good load for the 69.6 grain Lapua with 3.4 grn of Power pistol, a BR CCI Small Rifle primer. It grouped well and was very quiet out of the suppressor on the handgun.

Lapua 69.6 grain Scenar BTHP w/ Power Pistol and WSR primers (Handgun)
(Average)
3.0 grn- 1049 fps
3.5 grn- 1200 fps
4.0 grn- 1335 fps (barely noticible crater)

Nosler 77 grain Partition w/ Power Pistol and WSR primers (Handgun)
3.0 grn- 956.1 fps
896.7 fps
957.9 fps
error
error

3.2 grn- 1059 fps
1041 fps
1037 fps
1062 fps

3.4 grn- 1126 fps
1113 fps
1105 fps
1095 fps
1100 fps