Powder coat vs. Hi-Tek

pastera · May 29, 2020

BFDX7 said:
case length avg .89
Load bullseye 4.6 grains
Avg bullet weight is 232 grains
COAL = 1.22 to 1.23
Mold Lee 452-228

I can run some over a chrono.

Running the same bullet with CFE Pistol with no issues.
COAL: 1.190
POWDER: 5.6g CFE Pistol
Three coats of HiTek bronze

If you have a slow pistol powder, try that as a data point

Jay77 · May 29, 2020

I have some 231 I could give a whirl. I almost picked up some cfe pistol

mac1911 · May 29, 2020

BFDX7 said:
case length avg .89
Load bullseye 4.6 grains
Avg bullet weight is 232 grains
COAL = 1.22 to 1.23
Mold Lee 452-228

I can run some over a chrono.

how long is the bullet? Never mind found it

mac1911 · May 30, 2020

BFDX7 said:
So I forced myself to go to the range yesterday and I pushed about a hundred through the gun pretty quick. The leading was through pretty much all of the barrel. I pulled a bullet to check the crimp and it was barely noticeable. I also did a run test and a smash test and passed on both of them.

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Those are the particles I got after I ran some Chore Boy through the barrel. Some pretty good pieces came out. These were sized to .452 over 4.6 grains of Bullseye with a length of 1.220.

The more i see your pictures the more it looks like your leadinv does not start heavy to about midway then tapers off to the muzzle?
My thoughts are , not enough obturation ? Barrel has a tight spot where leading starts? To hard of a alloy then maybe wrong size?
i already know my bullets are a bit small for my 1911 so I cast the lowest BHN (per art pencil test thats around 8-10bhn) I have on hand and push them just hard enough to cycle. Which is clays at around 700fps
Here is my 1911 after 500 rounds with known under size bullets, harder than needed alloy and pushing them a bit closer to max.

45 acp lead fouling ? Slug barrel.

So I have a bare bones plain jain 1911 that I have put about 500 rounds of cast bullets through. Aprox 200 where TL452-230 LRN lubed with LLA that dropped small out of the mold and did not even touch the .452 sizer. I also ran the 230 lrn a bit fast. I am pretty sure most of the lead fouling...

www.northeastshooters.com

Jay77 · May 30, 2020

Shot more today and I ran some FMJ’s to help remove lead. I pulled some some out of the banking. On average they were clocking at 800 FPS.

38ExtraSpecial · May 30, 2020

BFDX7 said:
Shot more today and I ran some FMJ’s to help remove lead. I pulled some some out of the banking. On average they were clocking at 800 FPS.

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Hard to tell because of the impacts but it looks like some have the coating stripped on the lands and some don’t.

mac1911 · May 30, 2020

Michael J. Spangler said:
Hard to tell because of the impacts but it looks like some have the coating stripped on the lands and some don’t.

might have to blast some into the pool! or bucket?

Mudflap621 · May 30, 2020

mac1911 said:
might have to blast some into the pool! or bucket?

pool but video it

Jay77 · May 30, 2020

So the lands and grooves should both keep the coating.

38ExtraSpecial · May 30, 2020

BFDX7 said:
So the lands and grooves should both keep the coating.

I have seen it strip some on the lands and still work ok if they’re completely stripped off there might be an issue.

Demoman · May 30, 2020

Mudflap621 said:
pool but video it

Neighbors pool of course elevation is key but recovery may be tough could offer to put some patches in for him

Jay77 · May 31, 2020

The pool test was very tempting.... but I ran two out the gun with a 1/2 grain of Bullseye. They bounced off the blanket I shot and I measured them and they came back at .451 and they were sized to .452. The round nose was from my very first batch that I melted down.

38ExtraSpecial · May 31, 2020

BFDX7 said:
The pool test was very tempting.... but I ran two out the gun with a 1/2 grain of Bullseye. They bounced off the blanket I shot and I measured them and they came back at .451 and they were sized to .452. The round nose was from my very first batch that I melted down.

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We’re these all coated in the same batch? The RN seems to have stripped right off. The SWC seems fine.

pastera · May 31, 2020

SWC looks darker - like it had an extra coat or was cooked longer

Jay77 · May 31, 2020

Two different batches. The lighter coated one was from my very first batch that failed the acetone test.

38ExtraSpecial · May 31, 2020

BFDX7 said:
Two different batches. The lighter coated one was from my very first batch that failed the acetone test.

Ahh makes sense.
So that’s the culprit then it seems.

Jay77 · Jun 1, 2020

I mixed up a new batch of color and I’m going to cast some new bullets and make sure every step is good to go and keep the batches separate. With my Covid free time I may have mixed a bad batch or something. The last time I baked I did two 10 pound batches that I loaded and mixed together. I shot the rn and the SWC at a slow speed so I could recover the bullet and measure the diameter which came back a .451 which was the same as when I pounded the slug through the bore. The rounds literally bounced off of a blanket.

Powder coat vs. Hi-Tek

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