The recent state of affairs is forcing me to accelerate my designs abet. The preliminary R&D on our .308 X-Fire is in. I will be making a second heavier bullet soon.
90 GR .308 X-fire shot in a win Model 70 target rifle with target aperture sights front and rear 50 yards. Outside of the hole measurement for 4 shots was 5/8". This was with iron sights.
Muzzle velocity was 3210 FPS. I believe with the next powder test we will in excess of 3400 FPS with the .308. I am basically creating the load data for our bullet. There were no pressure signs on the brass or primer at the current loading.
The next bullet will be in the 175 grain range plus or minus. It will depend on what the weight comes in at when machined.
The X-Fire rifle round will enter the target open to 1 1/2" then shear the petals off which each petal will move forward and out. The core will continue punching in. It looks like the initial tests will put the wound track between 6" to 10" across the spread of the petals.
I believe I can design the heavier bullet with our loading to maintain super sonic at 1,000 yards with sufficient velocity to have the bullet open and perform as intended.
"It looks like the initial tests will put the wound track between 6" to 10" across the spread of the petals." That's great for soft targets. Any information as to bullet reaction to barriers of different materials and thickness?
-------------------- Well, this is it. Posts: 341 | From: San Antonio, TX | Registered: Oct 2012
The bullet will not open in hard material. It will strike as a solid projectile until it gets something with fluid into the hollow cavity where hydraulics take over. It will not act as a AP round, its content is completely 110 copper. The round will not shatter due to being copper. But it will tear petals off if they are opened. Meaning it will punch like a FMJ until it hits fluid.
I will not be at the shot show.
Posts: 202 | Registered: Dec 2008
Folks, The tool path is done. I have the first prototypes run. They have not been tested yet. I have a 175.96 grain .308 X-Fire. It is 1.32" long. I will be running some samples tomorrow to get them ready for test firing. I am looking to get them in the .308, 300 win mag and 300 blackout.