Improving a 22LR hollow point......

If you reform Stingers, they'll probably get to have as much bearing surface as a Mini Mag .

Can you try the tool on thunderbolts?
 
Some things I've been thinking about, I guess:

Thanks to a kindly fellow CGN'er, I should be receiving a Cooey 39 this week (I did have to pay for it, of course, but the price seemed quite right; mini-range report to follow?). This, as well as my Nylon 66, will be my main testing-medium for the rest of the shooting (thereby sparing my Rem 512, which has served admirably in testings thus far).

I found several sheets of beeswax laying around, so I will try to work those into some ballistics testing this week (no promises). The advised method seems to be to widen the hollowpoint (either with a drill or, in this case, with the Nastinose rod) to the point where you can shove some beeswax in it, and then whack the beeswax-filled tip flat with the Acu'Rzr rod. Comments are welcome.

I have a garden, and I have pests. While shooting the squirrels that are enjoying some of my food more than I do (and I've been thinking about doing so for some time) is one matter, the fact is that the bugs and bees have left me with many "squishy" tomatoes... ;) Testing to follow...

Just a quick thought about those "exploding" .17 HMR's you can find on YouTube; I've recently been wondering just how much of the effect is attributable to the fact that all those soda cans are carbonated. While I've seen some .22's just knock soda cans about without "explosive" results, high-velocity .22's with a decent "tip" should be able to do re-assert themselves in this area - right?

Okay, I gues that's it for now. I'm going to purchase a small selection of .22 LR for testing soon, so if anyone has any special requests, let me know - it'd be a pleasure. Just keep in mind that my current main source of ammunition diversity is Bass Pro, and not much else.

IMPORTANT: File this under "giving credit where credit is due"; my Baby Scorp'n forming rod sort of broke while I was re-forming, so I once again e-mailed Paco and asked what could be done about it. This guy is a gem - he said he understood this might happen due to the way the rod is shaped, and he sent me (free of shipping and materials charges) two (differently shaped) replacement Baby Scorp'n forming rods. Aside from the fact that I think the tool is money well spent, dealing with Paco is a refreshingly nice experience. He's got my recommendation, for what it's worth.

Off to do some shooting...
 
A bullet onlly spin as fast as the twist in the barrel. Most centerfire rifle have a twist of between 1:8 to 1:12, thats 1 revolution every 8 to 12 inches. You won't get hundreds of thousand RPM.
 
Sure you will. 1 in 12 twist (that's one rev per foot) at 3000 fps is 3,000 revs per second, or 180,000 revs per minute.

A 223 with a 1 in 7 twist at 3100 fps would be 5314 revs per second, or 318,857 rpm

a 22lr in a 16" twist at 1300fps would be 58,500 RPM.

Given the diameter of the hollow point cavity, it's relatively simple to calculate the centrifugal force generated.
 
prosper said:
Given the diameter of the hollow point cavity, it's relatively simple to calculate the centrifugal force generated.
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Right - I just took the easy route and simply shot them first, picked up the pieces later.

Good news: The wax didn't fall out before the target was struck.

"Bad" news: You won't get much penetration out of this type of round.

And here are some horrid cell-phone pictures to go with the testing:

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This is a CB Long filled with wax. You may some blue in the centre of the round (and you may note my non-manicured hands, or that crazy sofa cushion, or whatsoever catches your eye). Anyhow, that blue is beeswax. Long story short, I took one of the CB Long rounds that I had Acu'rzr'ed/Nasti-nosed/Baby Scorp'ned; if you'll recall, that had the equivalent of two co-centric circles in the bullet (the outer circle being the bullet's original frontal rim, and the inner circle being a combination of a Nasti-nose and Baby Scorp'n treatment). It turns out that those two co-centric circles were great for "shmushing" beeswax into.

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This is a comparison between the wax-filled CB Long bullet hole and a Acu'rzr'ed/Nasti-nosed/Baby Scorp'ned CB Long bullet hole. You can still see the wax-filled round (bottom) jutting-out from the bullet hole in the "backstop".

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This is the extracted round. The wax sort-of coated the bullet-hole, so what was left was 'all CB Long'. I didn't weigh the extracted projectile, but I did measure it (roughly) - it was about .28 across at the widest. And, yes, the hole in the centre of the bullet is from the Nasti-nose forming rod - it does go that deep, even into a CB Long.

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A side view of the extracted bullet.

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A comparison of the wax-filled CB Long's bullet-hole (sans the extracted bullet) versus the Acu'rzr'ed/Nasti-nosed/Baby Scorp'ned CB Long's bullet hole (bullet still in the bullet hole).

End result: Wax-fillings do not seem to "fall-out" of bullet, but they do tend to "wax" the terminal resting place (in more ways than one). Satisfying 'smack' on the target, but very minimal penetration. Probably good for thin-skinned varmints, but as yet untested on that "medium".
 
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A good camera, some gophers and this thread would be the pinnacle of modern science and rimfire ammo testing.
 
ive tryed taking a .22 hollow point and taking 2 #5 shot bb's and placing them in the cavity then taking plyers closing the cavity top so you can not see a hole, and it seems to separate durghing flight and 2 neat hole's from the shot are about 4mm's from the entry wound of the .22 bullet , and i thought that is pritty cool

i dont know how good the penatration would be or if they would just bounce off the hide never tryed it on game.

tests where done at 25 yards
 
I am happy with yellow jackets and winchester power points.

I did however fool around with cci mini mags open up the cavity and insert a #8 shot into the tip. The result in gelatin on the normal unmodified was the petals sheered off causing ok damage and the base would punch further on. the modified one would mushroomed perfectly and retained all the petals but penatrate only half as much and didn't tear it up like the normal one at the start.

But I am happy with winchester power points, and for extra carnage use yellow jackets.
 
i wonder if you can just stuff a .17hmr tip into a hollowpoint .22lr. of course you'd have to find cheap tips and just the tips. anyone know of an epoxy that is very liquidy but dries very hard? maybe use a syringe to apply it into the hollow points.
 
I gotta give it to you guys. The amount of effort you're putting into this (IMHO) pointless pursuit is unreal.

I'm not even sure what you THINK there is to gain from doing this stuff. As I said, just my opinion, but can you even really quantify any supposed 'benefits' from doing this stuff? Mercury in the hollowpoint... are you guys SERIOUS?

I've probably tried every type of ammo available in my 10/22, and have seen the terminal effects on literally thousands of gophers - but the result is the same. If you hit it - it's gonna die.

But - have fun and be safe.. I guess that's what's most important. :)
 
canucklehead said:
I gotta give it to you guys. The amount of effort you're putting into this (IMHO) pointless pursuit is unreal.

Thank you.:)

I'm not even sure what you THINK there is to gain from doing this stuff.

I wonder if they said the same thing about the .17 M2?;)

As I said, just my opinion, but can you even really quantify any supposed 'benefits' from doing this stuff?

Some of us like to shoot different mediums, so...we'll leave it at that?:cool:

Mercury in the hollowpoint... are you guys SERIOUS?

About that...no, I'm not.:redface:

I've probably tried every type of ammo available in my 10/22, and have seen the terminal effects on literally thousands of gophers - but the result is the same. If you hit it - it's gonna die.

Still, fun to experiment - no?:confused:

But - have fun and be safe.. I guess that's what's most important. :)

Fully agreed. :)
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Just a quick thought - CCI did start offering those SGB's, now didn't they?
 
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