My experience is alloy becomes less important and sizing becomes more important.
Slightly undersized coated bullets are much worse that lubed bullets.
My experience is alloy becomes less important and sizing becomes more important.
Slightly undersized coated bullets are much worse that lubed bullets.
I just wish I could group like that at 25 yards, no all my testing is done with a ransom rest, so I can take the human element out as much as possible.
As far as the polymer jacket, it has several properties that make it very unusual. The polymer is much slicker than copper or lubed alloy, this results in an approximate 5% in muzzle velocity increase compared to identical load data for copper jackets. This increase in velocity is due to lesser friction and as a side benefit gun barrels run cooler. The coating can be as hard as 3H+ so it's as hard as copper. The PC has a tenacious bond to the alloy, unlike copper, which at higher pressures can break free from the soft inner core. The rifling, which is about .004" from land to groove, poses no problem as the polymer is also flexible and simply contours to the rifling and the coating still encases the inner alloy.
i do double coat rifle bullets
to get a +3 mil build out. This was the recommendation of a PHD polymer physicist who calculated this PC thickness would withstand the torque spin-up of a full power 30/06 load generating in the area of 50K chamber pressure. By personal tests, I long since found he was absolutely correct. I do think a slightly harder alloy may be an accuracy benefit, but until we can correct the inerrant flaw of non-concentric cast bullets doing a battery of comparative tests present a problem.
Simply put, PC is making your own jacketed bullets.
Last edited by Dragonheart; 11-27-2020 at 07:06 PM.
any cast bullet does fine in a glock. I think glock says not to because they know your handloading to use them and dont trust your handloads. Pc works great too. Much cleaner.
The problem with lubed cast bullets in a Glock is the sharp barrel rifling that tends to strip lead, leaving heavy deposits in the barrel. These deposits build up, destroy accuracy and increase pressure. The worst barrel leading I ever saw were Glock's used n IDPA shooting cast bullets. I helped a couple of new guys de-lead their barrels and I have never seen barrels leaded up that bad.
Since PC creates a slick, hard and flexible polymer jacket that bonds to the alloy stripping lead is no longer a problem.
Zero worries.
Properly PC'd bullets ARE JACKETED.
CW
NRA Life member • REMEMBER, FREEDOM IS NOT FREE its being paid for in BLOOD.
Come visit my RUMBLE & uTube page's !!
https://www.RUMBLE.com/user/Cwlongshot
https://youtube.com/channel/UCBOIIvlk30qD5a7xVLfmyfw
Thanks for all the info, I have powder coming. Jerry
first gen Glocks had one side unsupported. Been fixed for a decade. I shot a bunch if pc in my 9mm no issue, I did change to an aftermarket as I wanted a threaded barrel. Had to get Douguy to fix throat as it along with the rest of the chamber is way tighter than the oem
Sent from my SM-G892A using Tapatalk
Ive shot ALOT of cast through glocks ALOT. Never seen any real leading when the bullet was fit to the gun and hard alloys and good lubes were used. Matter of fact when i first got my 20 i figured with the additional speed cast might now work so i bought a wolf barrel for it. Found the factory barrel shot cast better and didnt lead a lick. I have no doubt though that pc is even better in them. especially with softer alloys. Im sure a 8bhn bullet lubed would probably lead at full power but then it would in at a 1000 fps in most guns. About guarantee it at 1200fps. At least minor leading. Problem with most competitive shooters is they buy bullets and buy the cheapest they can find. Most of them are on the soft side.
The unsupported chamber thing is pretty much a myth unless you run nuclear loads. I have been loading & shooting cast in Glocks since the 1st gen1 9mm. With coated bullets, zero issues, just like shooting plated. As to handloads, its a CYA statement for the idiot reloader that KBs a gun.
EVERY GOOD SHOOTER NEEDS TO BE A HANDLOADER.
NRA Cert. Inst. Met. Reloading & Basic Pistol
Thanks guys. I have powder on the way.
I have loaded and shot several thousand powder coated bullets through Glocks. The only thing I have to show for it is a nice shiny barrel. And if I do my part, good accuracy.
I'm a Happy Clinger.
NRA Life member • REMEMBER, FREEDOM IS NOT FREE its being paid for in BLOOD.
Come visit my RUMBLE & uTube page's !!
https://www.RUMBLE.com/user/Cwlongshot
https://youtube.com/channel/UCBOIIvlk30qD5a7xVLfmyfw
Almost 100% of my ammo shot through Glocks are coated cast, and most of those are PC. PC cast bullets are simply great. And I am not a low volume shooter.
Honestly, the Glock bulge thing is WAY over hyped. Example, I run 10mm PC 200 gr bullets to 1250 fps in the stock G20 barrel. Smoking hot ammo. No bulge. No leading. Brass resizes fine and passes a gauge virtually 100% of the time. Similar experiences with 40 S&W and 9mm Glocks.
So, yes. I recommend PC bullets for Glocks without reservation.
"There is nothing like looking, if you want to find something."
~Thorin Oakenshield
There is only one load that has ever bulged a case out of my Glocks. I suspect it to be a bad load printed in the Hornady manual, and that wouldn't be the first time they've had a load that needed to be corrected: 10mm 800-x under a 180 gr XTP. Hornady's data is far higher than Hodgdon's. I did not even quite reach max when the infamous smile reared its ugly head.
Otherwise, full power 9, 40 and 10mm have been good to go in my Gen 3 and Gen 4 Glocks.
Last edited by Taterhead; 12-02-2020 at 05:05 PM.
"There is nothing like looking, if you want to find something."
~Thorin Oakenshield
800X is a good powder for heavy 10mm. BUT IT IS volatile AND GOES TOO FAR FAST!!!
When working up ys need go REAL REAL SLOW! You can get very impressive numbers but ya need be diligent and have good repeatable reloading Practices. .
NRA Life member • REMEMBER, FREEDOM IS NOT FREE its being paid for in BLOOD.
Come visit my RUMBLE & uTube page's !!
https://www.RUMBLE.com/user/Cwlongshot
https://youtube.com/channel/UCBOIIvlk30qD5a7xVLfmyfw
I tend to ageee. 800-X has been the only powder that gave odd results in 10mm.
Some folks swear by 800-X, but it never wowed me. Plus the fact that it must be dropped and trickled, I abandoned it after a couple pounds. I saw that Hodgdon is discontinuing it, and I am not in any way mourning. No. 9 is my undisputed favorite for hot/heavy 10mm.
"There is nothing like looking, if you want to find something."
~Thorin Oakenshield
I have been powder coating all my cast bullets, they have been fantastic in the glock , 1000's of rounds shot with no issue!
I shoot powder coated cast bullets all the time from my glocks, sigs, and shield. Never a problem, no leading.
Sent from my iPhone using Tapatalk Pro
Ive shot over 50K rounds of The Blue Bullets 147 coated through my G34. No issues. I did replace the Factory recoil spring with a 13lb recoil spring.
Alcohol Inventory Reduction Specialist (Journeyman Level)
BP | Bronze Point | IMR | Improved Military Rifle | PTD | Pointed |
BR | Bench Rest | M | Magnum | RN | Round Nose |
BT | Boat Tail | PL | Power-Lokt | SP | Soft Point |
C | Compressed Charge | PR | Primer | SPCL | Soft Point "Core-Lokt" |
HP | Hollow Point | PSPCL | Pointed Soft Point "Core Lokt" | C.O.L. | Cartridge Overall Length |
PSP | Pointed Soft Point | Spz | Spitzer Point | SBT | Spitzer Boat Tail |
LRN | Lead Round Nose | LWC | Lead Wad Cutter | LSWC | Lead Semi Wad Cutter |
GC | Gas Check |