Thread: Subsonic 308

Not the BLK guys- 30 cal
End of the day it doesn't matter if its a WM RUM 308 or BLK, if its doing 1050fps the performance is going to be the same
I started on this 'project' prob before the BLK come out.FINALLY coming together

It's a weight issue for twist
The big boys are going to need a fast twist obviously but the Balance is going to be almost the middle where the likes of a hybrid or Amax is a lot further back and need more RPM to stabilize

Time will tell
What do YOU want weight wise?

I would have thought 180grain would be pretty safe for stabilisation in most rifles whilst still having enough energy. As long as they EXPAND energy shouldn't matter AS much, dont think their will be enough energy for hydrostatic shock so you need lots of cutting edges and big frontal area to cause the trauma. my 2c

Im no expert on stabilisation, I want as heavy as my 1/11 twist will stabilise at 1050fps.......... and I want it to explode!

Sorry to parrot this in two threads, but I thought I'd chuck it in here just in case someone does a search and doesn't look at the results in my other one.

Okay, its going to be a few weeks before I can take another day off work to ''test'' this ammo on some game, so being a little impatient I decided to shoot it into a bucket of water instead. I had the bucket on top of some loose (wet) sawdust from the calf shed (last years calf shit = this years garden mulch). The shot ruptured the sides of the bucket and I had to dig the bullet out of the sawdust after the shot:







The long drill hole did its job, with two out of the four sides shearing completely off. If I were to take the cuts a little further forwards I believe that all four sides would shear off and that is basically what I'd call a success.

Next, to try it on some game to see if this is going to be a winner?

kj

What size was the HP and how deep?

Nice kimjon, can i suggest you try one of your previous pills, the ones with just the cuts in the jacket, not the enlarged hollow point, in the same bucket of water test. Since you no how they perform on game you should be able to make a pretty good comparision to your new model!

Originally Posted by Spanners

What size was the HP and how deep?

Dia5mm x 20mm deep, then used the primer flash-hole deburring tool to further open up the nose a little more.

Originally Posted by PerazziSC3

Nice kimjon, can i suggest you try one of your previous pills, the ones with just the cuts in the jacket, not the enlarged hollow point, in the same bucket of water test. Since you no how they perform on game you should be able to make a pretty good comparision to your new model!

Normally I would, but I'm out of buckets haha...

I'm pretty sure my first modified SMK's (V1.1 flutes only, no hollow point) didn't open up at all judging by the pin holes it was leaving in the goats on the exit side. I know a few people who have tested the standard 240smk ''in the bucket'' a few years ago and it hardly deformed them at all...some even looked like you could use them again except for the rifling marks left behind

As Spanners clicked onto earlier, the jacket material on the SMK is very thick and the hollow point itself is superficial i.e. only in the tip of the jacket and nothing at all in the lead behind. However by drilling the 20mm deep hole into them its seams to have fixed that issue.

kj

How much weight have you taken out by drilling that hole? It must be a fair chunk

Attn spanners.

How is production coming along?

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Funny you should ask. Waiting for a mate to arrive and we're going to squirt some wire tonight

Sweet.
Keep us posted .

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Wire making Vid

Turns a 110mmx19mm billet from the mould Veitnamcam made for me into 1100mm of 6mm diameter wire for use as cores for 30 cal jacketed projectiles
Uses approx 2000 psi to push it through



Finished wire

Sweet. I bet its pretty hot, were you dumb enough to grab it?

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Originally Posted by veitnamcam

Sweet. I bet its pretty hot, were you dumb enough to grab it?

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Gloves

Pussy

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