Range report....not what I expected..... (some pictures)
Ok, got to the range, set up as below, 10' from the muzzle of the guns I was shooting into 12" of pulp from newspapers that were taken apart, well, soaked overnight and packed in, except I poured more water in a couple of hours before the range to make sure everything was saturated. I got everything set up at the range. (picture)
First I targeted my round because I thought they might shoot a little high. I shot the target, then shot at the hole it made. Same level. So, surprisingly, I didn't have to make any adjustments for the cartridge.
Then, I checked velocity. I got 927 fps several times, so I shot my carbine just to make sure the chrono was working. It was, so 927 fps is the velocity. This isn't any more velocity than the 5.6 gr Acc#7 I tried before. I thought for sure I could get 950 fps.
I shot 3 bullets from the 2" Kel Tec. The specs say 3.1" barrel, but knock off the length of the chamber and it's about 2". The test I wanted was a short barrel to get data in the smallest practical carry guns.
While I was there, I shot 125 gr bullets out of my Third Gen full size and my Kel tec carbine (18" barrel). I also shot a Remington Gold Saber 125 gr. JHP into it. With the test bullets, the Kel Tec was mostly reliable with one failure to eject. I think that length (1.13" OAL) i almost all that I could get into that magazine. Maybe I could jam a bit more powder in, but I don't see the point.
I took the bucket home and started digging, and found the 125 gr coated bullet from the Kel Tec at 8". Mangled with no expansion. The 'wound channel' on the test bullets were prominent. (picture). I thought I was on the right track.
Well, I dug....and dug.....and dug and started thinking "Uh, oh". Yep, all the other bullets had gone through 12" of pulp and exited out the bottom of my sturdy 5 gallon Lowe's bucket. So, all I know is that penetration is 'adequate' and, have no idea what the max penetration would be, and have no bullets to compare or see pictures of. I wonder if I can drive 45 minutes back to Boggy Head and find them on the ground behind my target???
Note: The bullets shot from the carbine and the Third Gen veered and came out the side of the bucket at the base. I was pretty careful shooting right into the center but I can't tell which bullets did what. I followed the track of the test bullets all the way to the bottom, though.
I guess I'll have to make some more rounds, get a thicker stack of pulp and try it again.
PS: The first picture below is a few inches down to show the 'wound channel'. It didn't blow up like gel, but it's a pretty nasty hole.
PPS: Wow. I see I started this over 2 years ago. Heart rehab, finding data and making bullets that functioned slowed me down pretty good. Maybe we can put this to rest next time I go out.
PPPS: I see 'Double Tap' makes a 165 gr jhp +P round in 9mm called 'Equilizer'. I should pick some of those up and try them. MV of 900 fps. That's a bit of data I can use. A Double Tap +P load is probably close to max pressure.