Thread: Subsonic 308 project

Sorry @Clubbie for hijacking your thread. Too late now .

Nothing else for it, it was time to kill some plastic and water and do a little test. So having learnt lots from YouTube, we set up our experiment. We shot a .308 151gr cast lead bullet at 1085fps from 50 yards and wondered what would happen next.



We can even do slo mo, very advanced we are.



The 151gr cast lead bullet made it into the fifth milk bottle. We were well pleased to retrieve the bullet in a perfectly formed mushroom.





The diameter of the mushroom is 0.566" at its widest, and 0.522" at its narrowest.





Fair to say then that these bullets do what they say on the packet. Would have no hesitation shooting these into the shoulder of close range medium deer and goats.

Well that is the best mushroom so far, Can I put that video on my listing Flyblown?
For those that keep asking no the gas checks do not come off this proves it.

No problem @shooternz. I’ve got another short video of the bullet coming out of the milk bottle too but the GoPro went flat and one of my fool sons had hidden the charger and usb cables. But I watched it just now. Will upload it later and send you the link.

This makes me want to buy a 308

this retrieved from pot we cooked neck chops in,head shot sheep at 30ish yards.

Originally Posted by wsm junkie

This makes me want to buy a 308

Every body should have a .308 one of the most useful calibres there is, If I could only have one rifle it would be a .308
can be loaded from pip-squeak can killer to deerslayer

Originally Posted by shooternz

Every body should have a .308 one of the most useful calibres there is, If I could only have one rifle it would be a .308
can be loaded from pip-squeak can killer to deerslayer

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?

oih Cordite get in line....he has to swag them down to 6.8 first so they can be used in the mighty poohseventy LOL

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

@Clubbie where are you buying your trail boss from?
I’m in the Manawatu and interested in developing a load for my 308.
Like your video clips and can see this getting an addictive project.

Originally Posted by Shootm

@Clubbie where are you buying your trail boss from?
I’m in the Manawatu and interested in developing a load for my 308.
Like your video clips and can see this getting an addictive project.

Heya, thanks for watching, I appreciate the support :-)
I had to really shop around as nobody really freights the powder anymore.

I ended up buying 2.5Kg from H&F - which is enough for about 3,500 rounds!
I think Dead Eye Dicks had some too, down in Levin.

Originally Posted by Clubbie

Heya, thanks for watching, I appreciate the support :-)
I had to really shop around as nobody really freights the powder anymore.

I ended up buying 2.5Kg from H&F - which is enough for about 3,500 rounds!
I think Dead Eye Dicks had some too, down in Levin.

I rang H&F yesterday and they were sold out.
I’ll have to try DED today.

Originally Posted by Shootm

I rang H&F yesterday and they were sold out.
I’ll have to try DED today.

Let me know if you get stuck.... I really don't need all 2.5Kg!! I'll hook you up.

Any more info on loading these? I am also playing with the cast bullets, last week I tried a few 200gr with 10gr of trail boss, 66mm COAL and a 3mm drilled flash hole and some federal magnum primers and they shot around 1150fps with 2 a bit higher, looked like one keyholed on target.
Rifle is a 16in barrel Tikka.
At 66mm chambering a round in my rifle is still swaging rifling marks in the bullet however I shortened it up so it is still easy to chamber. Interested in what OAL everyone is using?
Is anyone using any fillers or having issues with inconsistent velocity?

@Cooper I assume it is a .308?

If so, then sounds like the 1:11” twist is not fast enough to stabilise the longer 200gr bullet.
@shooternz’s 151gr bullets are specifically designed for .308.