Plastic (lightweight core) bullets

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11 years 3 months ago #27978 by mlotziii
Plastic (lightweight core) bullets was created by mlotziii
So I was thinking (dangerous, I know) and I thought that instead of having a heavy core bullet for down range energy,... what if you had a lightweight core that put more of the mass to the circumference of the bullet. That would probably help with stability, right?

I'm thinking higher fps, more stability, ... or would they just disintegrate?

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11 years 3 months ago #27980 by jtallen83
Replied by jtallen83 on topic Plastic (lightweight core) bullets
A guy tried to sell me some of these for my P938;
www.guns.com/2013/02/20/liberty-ammuniti...0-sw-gel-test-video/

I told him I wanted something that will go through a wall or door and not disintegrate. I don't know about the materials used but it looks to be a similar principle with the large hollow point and high velocity.

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11 years 3 months ago #27982 by 13fcolt
Replied by 13fcolt on topic Plastic (lightweight core) bullets
I say explode.
My brother had this beautiful sako .223 years ago that had a 1/12 twist. We hit the range to try out some assorted varmint ammo and there was this one bullet, I think in the 40grn range with a cavity that went to the base that his rifle shot like a dream. All I got was clouds of dust around 40ish yards out of my 1/7.75 twist krieger.

If the jacket were strong enough, it might work. too strong and the terminal performance would suffer.

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11 years 3 months ago #27997 by OleCowboy
Replied by OleCowboy on topic Plastic (lightweight core) bullets

mlotziii wrote: So I was thinking (dangerous, I know) and I thought that instead of having a heavy core bullet for down range energy,... what if you had a lightweight core that put more of the mass to the circumference of the bullet. That would probably help with stability, right?

I'm thinking higher fps, more stability, ... or would they just disintegrate?

Whole range of dynamics come into play when you begin changing bullet weight and weight location.

Moving weight to the outside affects the spin and if that weight is not very precise the bullet will tumble and possibly disintegrate. Also the longer the bbl the more the internal effect or accuracy. As a general rule in most non-fixed applications you want you weight to the center of mass.

I am sure you remember the science class exp where you are spinning and holding some weights in your hand, you extend your arms/weights then bring them in and note the speed up and slow down of the RPMs.

That said the question to ask: What is the desired performance characteristic? Then use the "backwards planning and design cycle" to achieve the goal(s).

The area I am investigating is 'progressive rifling' and its effects on stability and accuracy. I will not dwell upon here as to not hijack...

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