Thread: Subsonic 308 project

Originally Posted by Cordite

Or a.303 as you make 204 grain hollow points for those. Just about to order some.

Btw, your 7mm 133 grain HPs - are you set up to swage them to 6.7mm for a 6.5 Arisaka/Swede?

No but I may buy a 6.5 140 grain mould designed for the 6.5 Creedmoor, the 7mm is considered marginal for hunting with cast bullets mainly because the twist rate
is to fast for cast lead the high rotational speed stuffs up the internal structure of the bullet and basically it turns into plastic and it flops about, Very hard bullets
can be shot at high velocity but they are too hard to expand,
There is a test done buy a guy with a 7mmBR reached 3000 fps with a 110 grain cast bullet with a 12"
twist the bullet was mostly Linotype which will shatter rather than expand, He was actually testing bullet the good news the best lube from his test was the one I use
so the lube is up to the job, .30 cal and above are the choice for cast bullet performance