I used them on my 708 project but gave up on them.
They gave less speed than regular large pocket 308 Lapua brass for the same charge & I couldn't get the speed back by increasing the charge as the CCI 450s would pierce before the 250s would.
I also tried brs, 400s & small federals as well...
Admittedly I was running them hard, but the large pocket would cope happily while the small primer simply couldn't match the speed.
I was running up to 2900fps with the 180 hybrids
Over 2900 the brass couldn't cope reliably
This was a special build with a long barrel & target action, so don't try this in your Tikka, etc .....
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