In the old days they came out with Teflon coated bullets aka 'cop killers' due to their ability to penetrate body armor. Then they became illegal.
I never tried any of them, but did use the nylon coated bullets. Maybe nylon was just another moniker for Teflon, don't know. I still got a box of the nylon 9mm. Only shot a few of them, I bought them just for testing years ago. They do have a tremendous amount of penetration compared to uncoated 9mm.
https://www.targetsportsusa.com/cci...ci-blazer-herters-9mm-luger-ammo-115-grain-total-nylon-jacket-3575-p-59019.aspx
Anyone try these below for penetration tests? Are these coated bullets similar to the nylon coated bullets?
https://www.midwayusa.com/product/1021119189
Here are a few penetration tests of stacked newsprint I did years ago to give you an idea how various ammo performs.
.22 short 5/8 inch of newsprint (snubnose)
.22 quiet 1 inch of newsprint (snubnose)
.22 HVHP 2-3/8 inches of newsprint (snubnose)
.22 Stinger 3-1/4 inches of newsprint (snubnose)
.380 ball 3-3/8 inches of newsprint (Beretta)
.38 SP Federal ball 4 inches of newsprint (snubnose)
.357 Hornady plastic tip magnum 3-3/4 inches of compressed kraft paper (snubnose) (a)
.357 Hornady plastic tip magnum 6 inches of compressed kraft paper (Ruger 4" barrel) (a)
9mm Hornady 6-7/8 inches of newsprint (Beretta)
9mm Herters nylon jacket 10 inches of newsprint (Beretta)
.45 Auto ball 4 inches of newsprint (Colt 1911)
(a) I was starting to change the tests to use compressed Kraft paper and never got round to finishing them. Kraft paper offer more resistance than newsprint. If the .357 was shot into newsprint I think the penetration would be about 25% more.
Tests will vary depending on how the newsprint / Kraft paper is compressed. For instance, if you have a stack of flat Kraft paper bags and do not compress them, the bullets go through about double of what they would with compressed Kraft paper. And when I talk about compressed paper, I mean about 25% - 30% compression in a box. You fill a box with paper that extends about 25% - 30% over the lip, then compress the paper and tape the box shut.*
But there is no exact science in this. For if you use Kraft paper bags you will have variables such as the bottom fold of the bag has more layers than the top of the bag with 2 layers. The important thing to do is to test the all calibers in the same conditions so they are comparable.*
I mentioned this before, an auto pistol seems more efficient than a revolver. Too much gas loss with a revolver I guess. And you get the benefit of recoil reduction with an auto. But I still use lots of revolvers for being dummy proof and reliability. (OK, some issues with reliability with Rugers.)
It is interesting to see how much power is lost from the snubby barrel to a 4 inch barrel length when you look at the .357 magnum results. Sometimes will have to test a suppressor to see how that compares to unsurpressed.
I never tried any of them, but did use the nylon coated bullets. Maybe nylon was just another moniker for Teflon, don't know. I still got a box of the nylon 9mm. Only shot a few of them, I bought them just for testing years ago. They do have a tremendous amount of penetration compared to uncoated 9mm.
https://www.targetsportsusa.com/cci...ci-blazer-herters-9mm-luger-ammo-115-grain-total-nylon-jacket-3575-p-59019.aspx
Anyone try these below for penetration tests? Are these coated bullets similar to the nylon coated bullets?
https://www.midwayusa.com/product/1021119189
Here are a few penetration tests of stacked newsprint I did years ago to give you an idea how various ammo performs.
.22 short 5/8 inch of newsprint (snubnose)
.22 quiet 1 inch of newsprint (snubnose)
.22 HVHP 2-3/8 inches of newsprint (snubnose)
.22 Stinger 3-1/4 inches of newsprint (snubnose)
.380 ball 3-3/8 inches of newsprint (Beretta)
.38 SP Federal ball 4 inches of newsprint (snubnose)
.357 Hornady plastic tip magnum 3-3/4 inches of compressed kraft paper (snubnose) (a)
.357 Hornady plastic tip magnum 6 inches of compressed kraft paper (Ruger 4" barrel) (a)
9mm Hornady 6-7/8 inches of newsprint (Beretta)
9mm Herters nylon jacket 10 inches of newsprint (Beretta)
.45 Auto ball 4 inches of newsprint (Colt 1911)
(a) I was starting to change the tests to use compressed Kraft paper and never got round to finishing them. Kraft paper offer more resistance than newsprint. If the .357 was shot into newsprint I think the penetration would be about 25% more.
Tests will vary depending on how the newsprint / Kraft paper is compressed. For instance, if you have a stack of flat Kraft paper bags and do not compress them, the bullets go through about double of what they would with compressed Kraft paper. And when I talk about compressed paper, I mean about 25% - 30% compression in a box. You fill a box with paper that extends about 25% - 30% over the lip, then compress the paper and tape the box shut.*
But there is no exact science in this. For if you use Kraft paper bags you will have variables such as the bottom fold of the bag has more layers than the top of the bag with 2 layers. The important thing to do is to test the all calibers in the same conditions so they are comparable.*
I mentioned this before, an auto pistol seems more efficient than a revolver. Too much gas loss with a revolver I guess. And you get the benefit of recoil reduction with an auto. But I still use lots of revolvers for being dummy proof and reliability. (OK, some issues with reliability with Rugers.)
It is interesting to see how much power is lost from the snubby barrel to a 4 inch barrel length when you look at the .357 magnum results. Sometimes will have to test a suppressor to see how that compares to unsurpressed.