Continued;
The Sherman Williams, both 1 and 2 coats, left PC deposits in all the barrels after 6 - 8 rounds with flyers then occurring. They also left leading in the S&W M1917/25 in 45 ACP and Uberti SAA in 45 Colt. The PC fouling could be cleaned out easily with a bronze bore brush and Hoppe's #9. The leading required a Lewis Lead Remover to remove as pictured above. This picture shows the PC residue buildup when the Sherman Williams PC was used, particularly the 2 coated bullets.

As to reducing pressure I found only one of the PC'd bullets demonstrated a measurable (outside of lot to lot variation probable) less psi that the lubed bullet in the 45 Colt but that PC’d bullet gave the highest psi in the 45 ACP, higher than the naked BAC lubed bullet.
Additionally I found one of the PCs (Cardinal Gloss Black) to leave a residue on the firearms (revolvers) worse than regular lube does. There also was considerable residue blown back on the case with the 45 Colt load. Other than that the Cardinal Gloss Black 1 coat worked well in all the firearms and rivaled the naked BAC lubed bullets for accuracy. It gave slightly less psi and slightly less velocity in all the firearms too. However, as mentioned, there was a considerable blackish deposit left in the chambers, on the cylinders of the revolvers and around the carrier of the M73. That did not seem to affect the accuracy and no fouling occurred in any bores. It cleaned off the firearms as readily as the residue from naked BAC lubed bullets.
The Sherman Williams, both 1 and 2 coats, left PC deposits in all the barrels after 6 - 8 rounds with flyers then occurring. They also left leading in the S&W M1917/25 in 45 ACP and Uberti SAA in 45 Colt. The PC fouling could be cleaned out easily with a bronze bore brush and Hoppe's #9. The leading required a Lewis Lead Remover to remove. There will be a couple pictures of that in the article.
The cardinal Pearlescent Steel Gray performed well in all the handguns both ACP and Colt but was pretty inaccurate in both rifles.
Colt. The PC fouling could be cleaned out easily with a bronze bore brush and Hoppe's #9. The leading required a Lewis Lead Remover to remove. There will be a couple pictures of that in the article.
The cardinal Pearlescent Steel Gray performed well in all the handguns both ACP and Colt but was pretty inaccurate in both rifles.
I’m not going to draw any conclusions; I’ll let each of you do that by scrutinizing the data. Here are the correlated data for each cartridge:
45 ACP/452-230-TC/5 gr Bullseye/WLP/R-P Case
Sherman Williams
Metallic Silver 1 Coat
Firearm…………… Grp @ 25 yd……..Velocity……SD……..ES……psiM43)…..SD……ES……..
TC Contender………3.9”..(8 in 2.8&rdquo
……1019 fps….11 fps…35 fps…..20,200…….900…...3,300……
S&W M1917/25…….4”…(8 in 3&rdquo
……….890 fps….15 fps…54 fps…....
Colt Gvm’t M1911….5.5”…………………919 fps…..12 fps…42 fps……
M98 Rifle..(50 yd).....3.2”..(7 in 1.1&rdquo
…….1046 fps….17 fps….58 fps…..
Sherman Williams
Metallic Silver 2 Coats
Firearm…………… Grp @ 25 yd…..Velocity…….SD…….ES………psiM43)…..SD……ES……..
TC Contender………4.6”……………..1006 fps……19 fps…58 fps……19,400…...1,200….3,400…
S&W M1917/25……5.4”..(9 in 4&rdquo
…….903 fps……14 fps…41 fps
Colt Gvm’t M1911…6.5”………………919 fps…….19 fps…54 fps
M98 Rifle…(50 yd)…5.25”……………1044 fps……10 fps…33 fps
Cardinal Pearlescent
Steel Gray 1 Coat
Firearm…………… Grp @ 25 yd…..Velocity….…SD…….ES………psiM43)…..SD……ES……..
TC Contender………4.4”……………..1002 fps……14 fps…53 fps……19,900……1,500…4,000
S&W M1917/25…….4.9”………………895 fps...…17 fps…54 fps
Colt Gvm’t M1911….5”………………...917 fps…...10 fps…35 fps
M98 Rifle..(50 yd)…5.2”………………1038 fps…...13 fps…48 fps
Cardinal Gloss
Black 1 Coat
Firearm…………… Grp @ 25 yd……Velocity……SD…….ES………psiM43)…..SD……ES……..
TC Contender………2.2”………………996 fps……16 fps…..61 fps……18,700……1,200….4,100
S&W M1917/25……2.2”………………886 fps……16 fps…..43 fps
Colt Gvm’t M1911…3”…………………917 fps……9 fps…...31 fps
M98 Rifle…(50 yd)..3.6”…(8 in 1.4&rdquo
…1035 fps…...14 fps….43 fps
Naked Cast w/BAC Lube
Firearm…………… Grp @ 25 yd….Velocity…..…SD…….ES………psiM43)…..SD……ES……..
TC Contender………2.1”……………..1004 fps……12 fps….40 fps…..18,900…….900……2,900
S&W M1917/25……2.25”…………… 917 fps……..9 fps…..30 fps
Colt Gvm’t M1911…2.75”…………….922 fps…….12 fps….37 fps
M98 Rifle…(50 yd)…2.2”……………1060 fps…….15 fps….45 fps
45 Colt/452-230-TC/7 gr Bullseye/WLP/W-W case
Sherman Williams
Metallic Silver 1 Coat
Firearm………………. Grp @ 25 yd….Velocity………SD…….ES……psiM43)…..SD……ES
TC Contender………….2.8”……………..1080 fps……10 fps….34 fps…..14,800……800……2,900
Uberti Evil Roy SAA…..3.6”……………..896 fps……..12 fps….34 fps..
Uberti M73 Carbine..(50 yd)..3.6”………...1153 fps……12 fps…41 fps
Sherman Williams
Metallic Silver 2 Coats
Firearm………………. Grp @ 25 yd….Velocity……..SD…….ES………psiM43)…..SD……ES
TC Contender…………..3.1”……………1070 fps…….12 fps….39 fps…..15,700……500……1,700
Uberti Evil Roy SAA…..3.6”…………….900 fps……...8 fps…...24 fps
Uberti M73 Carbine..(50 yd)….2.8”..……1142 fps…….8 fps……27 fps
Cardinal Pearlescent
Steel Gray 1 Coat
Firearm………………. Grp @ 25 yd….Velocity………SD…….ES………psiM43)…..SD……ES
TC Contender………….3.9”…………….1070 fps……..7 fps….20 fps……16,000……600……1,700
Uberti Evil Roy SAA…..5”……………….899 fps……..18 fps…59 fps
Uberti M73 Carbine.;(50 yd)..4.2………...1135 fps………5 fps…17 fps
Cardinal Gloss
Black 1 Coat
Firearm………………. Grp @ 25 yd…..Velocity…..…SD…….ES………psiM43)…..SD……ES
TC Contender…………..1.8”……………1066 fps…….11 fps….31 fps……15,900…..500……1,700
Uberti Evil Roy SAA…...2”………………896 fps……..10 fps….31 fps
Uberti M73 Carbine..(50 yd)..2.5”………..1134 fps……13 fps…..49 fps
Naked Cast w/BAC Lube
Firearm………………. Grp @ 25 yd…..Velocity……SD…….ES……..…psiM43)…..SD……ES
TC Contender…………..1.8”…………….1078 fps….9 fps…….35 fps……16,700……900……2,900
Uberti Evil Roy SAA…..2”………………..902 fps….12 fps……44 fps
Uberti M73 Carbine..(50 yd)..1.7”………..1135 fps…..5 fps…….15 fps
Larry Gibson
Addendum; From the above test and numerous other rifle handgun cartridge tests with a variety of PC'd cast bullet which gave basically the same results you understand why I have not yet began using PC'd bullet. So far [guess there's always hope] PC'd bullets have shown me no advantage. That included "less smoke" and clogging up dies.....the smoke doesn't bother me and my lubed bullets don't clog up dies.
LMG
Concealment is not cover.........