I loaded up some check loads and will head to the woods today to shoot over the chroney and check for pressure signs.

7 Rem mag with Win 780 and Hornady 139 grn Interbonds.

I'll post the results this evening.

Just something to do on a day with nothing to do.

All velocities are 3 shot averages from my 24" barreled Weatherby 7mm Rem Mag SBGM.

Winchester Brass
CCI 250 Primer
139 Grn Hornady Interbond
Winchester 780 Sup. Powder

66 Grns........3026
67 Grns........3086
68 Grns........3109
69 Grns........3191
70 Grns........3215

I am pleased with the speeds and there were no signs of high pressure noted.

Nice. How full was the case with these loads? Did you test for accuracy?

KB

Total case capacity was 88 grns. to the top of the case.

84 Grns to the tangent point of the shoulder/neck.

Accuracy will have to wait for better weather.

I load the 780 in my .300 WM. Good accuracy.