Anyone Try These 6-Petal Expanding Pellets?

[JuryRigger]

Here's links to the other threads on hollowpointing with a Phillips bit and such...
https://www.gatewaytoairguns.org/GTA/index.php?topic=182343.0-Knife's original thread
https://www.gatewaytoairguns.org/GTA/index.php?topic=182487.0-Knife's extension/furthering of the first thread
https://www.gatewaytoairguns.org/GTA/index.php?topic=182523.msg156079433#msg156079433-Motorhead's take on the idea
Jesse

[kimoleto]

Some examples of petal cutters
I made mine out of brass, since my slugs are 100% pure lead I have no problem with it

[USAFANG6799]

Similar to the H&N Grizzly slugs.
Just remember that this kind of structure has a negative affect on BC.  (As Motorhead noted.)

Has anyone tried filling the hole, the slug w/petals, with something like wax to help deal with B.C.?
Plastic being harder than wax would not be advantageous because it would not react as fast on impact, delay the opening of the petals.

[mrbulk]

Some examples of petal cutters
I made mine out of brass, since my slugs are 100% pure lead I have no problem with it

Those are very cool looking. You should make some for sale...

[kimoleto]

I´m in Mexico so I had no choice but to make them, You (lucky people in the US), can buy them,  look for corbin swagging press (its called a saber tooth die), or look for blank cartridge forming dies.
I´ve been lookin for KnifeMaker and MotorHead posts about this issue, Knifemaker alone has 391 pages of posts, can somebody be more specific please?

[JuryRigger]

I´m in Mexico so I had no choice but to make them, You (lucky people in the US), can buy them,  look for corbin swagging press (its called a saber tooth die), or look for blank cartridge forming dies.
I´ve been lookin for KnifeMaker and MotorHead posts about this issue, Knifemaker alone has 391 pages of posts, can somebody be more specific please?

I dug up the links; they are in my post a little further up the page.
Jesse

[kimoleto]

Thanks a lot!!!!
I tried the phillips screw driver, you need to sharpen it, the "cutters" need to be really thin and the bullet must be a hollow point. Never tried with pellets only slugs.   Pieces of a hacksaw (used a grinder to shape and sharpen them), brazed on a small diameter rod also function, keep in mind I make .30 cal slugs, smaller diameter slugs can be made but they are really difficult.

[Cableaddict]

Similar to the H&N Grizzly slugs.
Just remember that this kind of structure has a negative affect on BC.  (As Motorhead noted.)

Has anyone tried filling the hole, the slug w/petals, with something like wax to help deal with B.C.?
Plastic being harder than wax would not be advantageous because it would not react as fast on impact, delay the opening of the petals.

That's a very interesting idea.

[USAFANG6799]

Similar to the H&N Grizzly slugs.
Just remember that this kind of structure has a negative affect on BC.  (As Motorhead noted.)

Has anyone tried filling the hole, the slug w/petals, with something like wax to help deal with B.C.?
Plastic being harder than wax would not be advantageous because it would not react as fast on impact, delay the opening of the petals.

Thank you.
At least it caught someone's attention.
I like to try to think out of the box even though it usually gets easily dismissed.

That's a very interesting idea.

[KnifeMaker]

Here are a few pics. At the end,  I will give results that are easily obtained for anyone.


Fast expanding, here in .25 cal.  This is the simple version to make. I start with a hp of my own making and mold the slug afterwards. Ultra simple.


Select a star drive bit, in this case a # T-15. Start by using a good sharpening stone to bring the tips flat down to the point that there is no bevel on the tip. Follow by using a very fine stone to make sure it is flat and the lands if you will, the high points of the tip are dead flat.  This will give a very sharp cutting surface.


Put a bit in a typical magnetic screwdriver and press down into the cavity firmly. This for short range accuracy. For fine accuracy. use a drill press or mill, and set the depth stop and put the  T-15 in the chuck or quill. Depth has to be tested and once you find the proper depth for accuracy and expansion, set the depth stop to that spec. Done and Done!
Here are the slugs I start with.

[KnifeMaker]

Now lets get started. For explosive expansion, or fragments as one poster requested, start here.


These are the .22 slugs.  Both light weight and heavy.

[KnifeMaker]

Now the mods for rapid expansion and fragmenting.
First the design for the PP-700 at 475 to 550 fps rapid expansion.  It is unreal what it does to a trash bird, even at such low velocity. 


I first did this by hand only. Once the out come wanted was obtained, I made a tool for the lathe. I used a piece of 3/8" brass round stock, cut a slit the size and length needed and inserted a typical box cutter blade in it and closed and jb welded it.


This is placed in either a drill chuck or in my case, the quill of a mill and depth set. In other words, i use the mill as a giant press. the slits go all the to the bottom of the deep hp cavity. Just above the driving band.


Next, I use a cone, and press the slug in nose first which closes the slits back to the original shape. No BC loss at all. Still very accurate.


In the larger slug, shot from the raptor at over 1030 fps, they fragment like a bomb!  Woo-Hoo! Success!!!
My Wife doesn't like it when I use them though. I shot a trash bird a few weeks ago and there was, well, Meat all over the yard. Muahahahahaha did I mention that the two largest parts were about 10 yards apart. HMR performance in an Air Gun. Got'ta love it!


As for the Philips head, forget it. The H&N uses this in the hunter pellet and it fails miserably. It works in a .22 rim fire as it is a small nose and fast. At subsonic, not so much. And even when it does, it is not very effective as it only opens slightly. Giving results more more than a flat nose pellet.   


Knife


P.S., that over .50 cal in the indicator is a .218, heavy with the #15 torque bit used. 

[KnifeMaker]

I tested filled hp's extensively. It must be mentioned that the pistol slugs used in Fire Arms that use this technique is to prevent such media as Denim or leather from clogging the HP. Particularly in cold weather when the perp may be wearing heavy clothing. Our vermin wear no such clothing. It actually drastically restricts rapid expansion on game.


Knife

[mrbulk]

Very interesting Mike and whoa, that last one is wicked! Would love to see a pic of the sharpened/modified bit!

[Insanity]

Mike you have far too much time on your hands and I greatly appreciate that.

[KnifeMaker]

Mike you have far too much time on your hands and I greatly appreciate that.

You and me both Brother! Forced retirement was a curse at first. It is thurning out to be not so bad. Other than keeping me dirt poor. LOL

[KnifeMaker]

Very interesting Mike and whoa, that last one is wicked! Would love to see a pic of the sharpened/modified bit!

That's doable. Thanks to you. 

[JuryRigger]

PDF'ing this page now; maybe at some point both Knife and Motorhead's HP mods can be made into a sticky? They are most definitely worthy of that... 
Thanks again Knife for the slug R&D!
Jesse

[Motorhead]

They do work well ... Personally have taken 2 spring / young Jack Rabbits last week with the .177 and 12.5 NSA's having been #0 size Xed.
heart lung shots with one rabbit about 40 yards, other @ 70 yards.  Both knocked off there feet as if hit by a lightning bolt ... DRT !!!
Velocity at muzzle @ 1040

[Cableaddict]

I tested filled hp's extensively. It must be mentioned that the pistol slugs used in Fire Arms that use this technique is to prevent such media as Denim or leather from clogging the HP. Particularly in cold weather when the perp may be wearing heavy clothing. Our vermin wear no such clothing. It actually drastically restricts rapid expansion on game.


Knife

What do you mean by "filled?"     
Do you add wax or something, to improve ballistics?

(Great work, BTW ! )