Beginning load for 7WSM: H-1000 and 162 Hornady BTSP

[Cascade Precision]

I do a lot of research before loading a new cartridge, but some of my sources cite different velocities for the same powder charge.

My Sierra manual lists 69.0 grains to net approximately 2900 fps, while Hodgdon 69.0 grains nets 2969 fps.

I think I am going to start at 67 grains and work up (67 is roughly 2800 fps according to Sierra, while Hodgdon states 64.0 nets 2816 fps).

So, what says the 'Hide.

I am running Winchester cases and I am going to try large rifle primers first before I jump to magnum. Have heard that magnum primers can give pressure signs while large rifle is a bit safer.

Thanks!

 

[jetmd]

I use H1000 in my 7wsm and Federal match large rifle primers with no issues.
My load is 64.5 with 180vld's, using ballistic calc and back figuring the velocity after shooting out to 1200 yards I am at 2950.
This does not match up to the reloading data, but this is actual velocity obtained from come ups.
I love my 7wsm but the numbers seem to vary quite a bit from published data.
My advise would be to try OCW testing then find your true data at the range.

Respectfully,

Chet