What to do?
The problem ... We have a big bore
PCP pistol. It normally shoots in the 63-71 fpe range with round
ball and slug. We want the max. versatility from it. It's shrouded
so it's quiet - but we can't just go shooting it anywhere because
it's very powerful. We wish to use it for varmint control in the
barn. In addition to "extreme caution" as to where and
when we shoot ... what factors of projectile design could minimize
ricochet - minimize over penetration - minimize long range travel
- and retain accuracy?
Your e-mail responses follow ....
....something similar to a Sheridan slug. This would allow
a great deal of surface area (flat or slightly rounded point)
on the nose of the slug to transmit most of the energy to the
target. Also, this design limits the range and penetration of
the projectile due to it's low B.C.
Just my opinion as a mechanical engineer;)
Shorter range therefore needs to be less dense than lead for lower
Less ricochet therefore maximum deformation
or fragmentation to expend
energy at target or first contact in case of miss.
Perfect round must therefore be an "Ice slug". Silicone
your largest slug
mold. Place in freezer so initial water seals the mold when added.
Make up a
few to keep in the freezer for special guests.
The large slug should provide enough mass with water's density,
fragment easily on impact with squirrel or surroundings, and the
frontal area with less density should decrease maximum range.
Here - good responce - format I can't just highlight
and copy. Won't type it all out. Here's the outline ...
Use smaller pistol
Sabot round in larger pistol
... approx. 40 grain hollow poin
with power turned down - accuracy questionable.
How about using a small ball with a sabot.
WHY CALL AND ASK YOU OF COURSE!! haha
Let me see,now iv read everything on this site at least Twice
(but the memory aint what it used to be), so now i think i would.....
AARRGGH the Pressure..i think i would use a heavy wad cutter at
OR design a hard wax ball..hehehe
How about you shoot Soft Wood plugs.
Alright Gary, I accept your challenge...now its getting
interesting! I think
what you need is a lightweight projectile that will come out fast
for short distances, but that has relatively high drag and a low
coefficient so that it bleeds off speed and energy quickly.
casting up some soft aluminium slugs with a nice flat-nose (wadcutter)
design....? (should minimize ricochet also)
About the topic that you presented today in the Homestead,
I have heard
somewhere that the police department uses a different kind of
ammo when they
are in front of a riot or a disturbance. I believe that the bullets
are made out of rubber or maybe sand bags shot from a shotgun.
The idea is
to stop the people without hurting them, too much or even killing
Using that same principle, you just have to create
a 32-caliber cartridge,
to insert the 32-caliber sandbag and the problem is solved. I
discarded immediately the idea of a rubber slug because of
the ricochet problem, IMAGINE THAT!
Gary I'm an accountant with a
very rigid and structured formation. It's very
hard for me to think out of the box.
When I was a kid my Dad would buy the 22 shot shells. You could
shoot the pigeons in the barn without going through the side.
So buy the smallest shot and make a sleeve, like they use for
shotguns to carry shot out of barrel.. I would make one out of
bio-degradable material. Like, light weight cardboard or the newer
corn based stuff..
Or make a new rifle that has same gauge/diameter as commercial
product such as a .410 if you wanted to make rifle for that purpose.
Basically an air shotgun. A whole new line.
The range wasn't to far on the .22 shot shells. If I remember
right, at 20' the pattern opened up enough, that you could start
missing. But that makes it more sporting.
Also on the shot shells they would foul up the barrel real fast
with the rifling. So the sleeves would have two functions in a
3 things to try:
first, turn a few slugs out of round nylon/delrin stock. While
(relatively) fine for a short distance then lose most of its kinectic
second, you could make some frangible stuff out of something
and very small shot. Lube up a slug mold and pack the mixture
in. let it
cure and testfire. Might try cornmeal instead of shot. Biodegradeable,
will mostly dissolve.
third, dont miss!
I await your answer!
The latest picture looks like you shot the siding on the barn
with a .32 wadcutter.
I've thought about it all day and the only solution
I could come up with
plaster projectile. It would still hit with a wicked punch at
range but be lighter
and not have the energy to carry the distance as far. It would
hopefully disintegrate if it
hit anything (preferably the intended target).
I understand that the coppers use them when they storm
into a crack
house. A twelve
guage round will blow a door knob through a door but not kill
the other side.
It would appear that "Maxwell" the coffee
can mouse was dispatched witha a center of mass shot. Also, I
am betting that the can was full of water as there appears to
be no dmage to the opposite side of the can. Must
be a hollow point design with a huge cavity.;)
Very Warm ... but ... the can
was empty and there is a hole in the other side. Still - very
okay try the glazer safety slug idea. only use a gelatin
capsule full of # 9 shot. or just the slug hollow point jacket
with the shot in it, with wood glue to hold them in.
Interesting photos there, especially that paper-puncher hole.
Must be firing drill bits to get an edge that clean! ; )
I'd guess you're using a lightweight
cylindrical slug of some sort. The gunpowder community
has tried almost everything under the sun in search of the perfect
slug: aluminum, zinc, copper, brass, steel, monel metal, tungsten
powder, bismuth, plastic, you name it. I've used some rubber bullets
that were meant to be shot with just a primed case (no powder
at all) and were both fairly accurate and reusable. Didn't bounce
as much as you'd think with the right target, and while surprisingly
noisy (primers are LOUD) they could be safely fired indoors. Unless
the environment is a factor it just keeps coming back to lead
though, hard to beat its sectional density for the cost.
Could it be a wooden dowel, sort of like an "airgun arrow"
but with a blunt tip? Could it be a plastic "capplug"
of the right diameter that just happens to fit? Could it be a
custom turned HDPE/teflon rod section? Could it be a great big
'honkin Diablo-type pellet just like some sort of uhairgun? Yeah,
that's gotta be it, a larger-than-life "Beeman Laser Pellet".
Or, it could be something completely different.
Gary, who'da though you were such a big tease! : )
I think that the answer
to the quiz is a Hollow Point Slug, but with a
particular design. I don't have a bit of knowledge about the dynamics
the ballistic performance of a particular slug. The way I see
it is that the
slug should be as light as possible and the hole in the front
of the slug
should be almost as large as the diameter of the slug and should
close to the base of the slug. In that way the walls of the slug
weak and most of the mass will be at the bottom. I hope it flies
Whoopp - whooop
We have a winner!!!!
Is this what you had
in mind Julio?
And, just maybe ...
it could be swagged from a buckshot ball ... ;?)
I'll prepare the page
of pics now of the results.
Sorry ... made
it this afternoon and somehow neglected to link it here.
pics and such of the slug and tests