Thanks for the reply’s, saw a couple boxes on sale and might have to order some. Don’t have a .30 cal magnum currently but that might change this season, thought I’d try them in some .308’s in the meantime.
Any issues with expansion in .308 velocities, Sierra mentions they are fine in .308 but if not I’ll stick to shooting targets. Price was too good to not buy.
The Sierra Game King bullets are "old school" cup and core bullets and some folks claim they are too frangible.
At "magnum velocities" they just might be, especially when used 50 yds and under.
If you're going to shoot them at moderate velocities, say 2800fps or slower, they hold up very well, even if they hit big bones.
I used to use them in a 308 Winchester, Mod 70 Winchester, with a 22 in bbl, loaded to 2200 fps, because it seems to be a "sweet spot" for accuracy with this bullet in just about any cartridge.
I used 50 grains of IMR7828 over CCI 250 primers in the 30-06 case.
In the 308 Win case I used 46 grains of IMR7828 over CCI250 primers
In both rifles, with 22in bbls, these loads gave me 2200fps +- consistently and produced close to match grade accuracy on paper targets.
The recoil was noticeable but very easy, even for a recoil sensitive type to handle.
These loads shot very tight groups right out to 300yds but
200 grain bullet trajectory at 2200fps It was appx 4 inches low at 150 yds and 28 inches low at 300 yds, but sub moa groups right out to 300, from a bench of course.
If you're hunting where your shots aren't likely to past 200yds and you're sure of the range, these relatively mild loads, with the heavy bullet are surprisingly effective.
