Teflon bullets and my USP...


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New_comer
October 25, 2003, 11:05 PM
Hello, all! :D


Yesterday, I participated in a 4-stage steel plate shootfest, and brought along the usual lead loads, and a box of teflon coated bullets I recently discovered.


The coated bullets were pretty accurate, (as in if I did my part, a 6" plate at 15 mtrs is history :D), but what surprised me was that for the first time in three years of shooting, I didn't have to scrub the barrel of those stubborn lead deposits. Even though I've shot a lot of the lead bullets that I brought at the competition, it would seem that the teflon loads scraped off whatever lead strip that adhered in the polygonal grooves. Really a pleasant discovery! :cool:


But before I go trading off all my lead reloads for these, I'd like to ask if there's any issue about teflon that you may want to share. One I've chanced upon is that these scrub off the bore a little at a time, eventually reducing the barrel's accuracy. Is this true?


Thanks for sharing ;)

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sanchezero
October 25, 2003, 11:17 PM
Dude, where did you get those banned cop killer bullets?!?!?

:neener:

New_comer
October 25, 2003, 11:33 PM
Banned???


Cop-killer???


WHOA!!!... These cutesy, lipstick-looking, el-cheapo loads available everywhere beats vests???


I'm all EARS... :what:

Hkmp5sd
October 25, 2003, 11:55 PM
I used to shoot Nyclads and they were extremely accurate. The coating will not harm your barrel. Shooting jacketed bullets after lead bullets will help remove lead from the barrel. On occasion, if I've fired a bunch of lead bullets, I'll fire off some FMJ through the gun before going home.

JohnKSa
October 26, 2003, 01:22 AM
These cutesy, lipstick-looking, el-cheapo loads available everywhere beats vests???
Who said anything about vests?

What is the brand on these "teflon coated bullets"?

BTW, shooting FMJ through a leaded barrel can be very dangerous.

This started back when nearly 100% of lead pistol bullets were for revolvers. The cylinder/barrel vent probably allowed this practice to be carred out without incident.

However, autoloaders don't have a pressure vent. Shooting a jacketed bullet down a leaded bore can cause the barrel to rupture. At least one major pistol maker warns against this in their owner's manual.

Snowdog
October 26, 2003, 01:48 AM
Sanchezero's :neener: = Tongue-in-cheek

Concerning vests:
PTFE coatings are irrelevant, the difference is made by core material and profile.

New_comer
October 26, 2003, 03:40 AM
I don't know yet what brand. I think they're coating the slugs with that teflon chemical at the gun shop where I have my brass reloaded.


I'll ask them that next time I go there. I sure hope that coating doesn't act like sandpaper that'll ruin the bore... :eek:

Pendragon
October 26, 2003, 04:01 AM
shooting copper after lead can be dangerous.

if a lot of lead, it may increase pressure due to tighter fit.

edit: that said, I do it in my 1911 when I cant really help it.

SDC
October 26, 2003, 08:58 AM
Are you sure they're not "moly"-coated (molybdenum disulfide)? These have a silverish-grey/blackish look to them, and the moly reduces friction between the bullet and the bore.

Hkmp5sd
October 26, 2003, 10:47 AM
shooting copper after lead can be dangerous.

Yep. But laziness sometimes overcomes common sense. :)

Archer
October 26, 2003, 01:09 PM
Newcomer,

One is ill-advised to shoot lead bullets in any polygonally-rifled pistol, such as an HK USP like yours, or in a Glock.

There's a reason you have a hard time cleaning out your barrel after shooting your lead rounds. The barrel is stripping the lead from the projectile abnormally. This can lead to a pressure spike and a kB !

Shoot plated, coated, or jacketed rounds, and leave the lead for conventional rifled firearms.

New_comer
October 29, 2003, 12:49 PM
Shoot plated, coated, or jacketed rounds, and leave the lead for conventional rifled firearms. That's why I'm excited about my find. After more than 4000 rounds of lead rounds shot thru my USP, being able to shoot a much cleaner slug is a welcome relief... :D


I've heard our shop uses DuPont teflon coating. Does anyone know this product? Is this the Molybdenum disulfide coating mentioned earlier?

SDC
October 29, 2003, 01:35 PM
Honestly, I doubt that they use Teflon (a DuPont trademark), because it doesn't do anything useful on most bullets anyway; the reason it was used on KTW armour-piercing ammunition was to help prevent ricochets when the bullets struck a hard surface. Because of that, the media got the idea that "Teflon" has this magical property of making bullets pierce armour. Molybdenum disulfide, on the other hand, is a lubricant that IS widely used in ammunition (both rifle and handgun), and it doesn't take nearly as much effort to use; where Teflon has to be applied to a surface and then "baked" on with high temperatures, you just need to slosh moly around in a bucket with the bullets and it's done.

New_comer
October 31, 2003, 09:30 PM
Thanks SDC! :D

These have a silverish-grey/blackish look to them, and the moly reduces friction between the bullet and the bore. The ones I have are bright blue. But they also come in red.


Anyways, I think I've found my ideal sports load. Thanks all! :cool:

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