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Thread: PC coated bullets and FPS

  1. #1
    Boolit Master brstevns's Avatar
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    PC coated bullets and FPS

    I have been going through the different post on PC coating bullets. I still have a question. Has it been determined if 1800 fps can be expected using coated bullets and no gas check? Most loads I load come near this maybe 1900 at best.

  2. #2
    Boolit Grand Master popper's Avatar
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    Got to 1750 with 31-165, No GC. near MOA @ 100. It will depend on the boolit. I think I can get to 1800 with more powder in 308. PC is good to much higher fps.
    Last edited by popper; 04-26-2014 at 09:59 PM.
    Whatever!

  3. #3
    Boolit Grand Master Artful's Avatar
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    leadman is reporting reasonable accuracy at over 3000 fps with hi-tek in 223.
    je suis charlie

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  4. #4
    Boolit Master brstevns's Avatar
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    Just would like to shoot a few 308's around 1900 fps and a 45/70 at 1400.

  5. #5
    Boolit Bub
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    in my AR I get around 2800 with no GC before accuracy goes to pot my bullets are range scrap. I have been going to try some linotype to see if I can get more

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    bestevns
    The answer is yes you can ..
    I have 6.5x55, and 308's Pc'ed and going 1900+ FPS and 45-70 and 458 socoms going almost 1600 FPS about 1" at 50 yards consistently .. sometimes better.. this is with 98/2 alloy ..
    most of my molds were GC molds but have been switching to PB when I can.. Also my Hollowpoint molds seem to be just a little more accurate ..
    I am in the process of getting some Smooth wall rifle molds and think I will be able to push them even faster

    sorry Pic posted is of a attempted subsonic load .. I hit enter way to fast .. will look for the other pic soon
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  7. #7
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    all "MY" load data is there .. if you look at bullet #2 you will see none of the coating has burned off .. same with my 308 recoverd bullets at 1900 + FPS

    Attachment 102923
    [SIZE=4][B]Selling Hi Quality Powdercoating Powder

    I carry a Nuke50 because cleaning up the mess is Silly !!

    http://www.bing.com/search?q=nuke50&...7ADE&FORM=QBLH

    I am not crazy my mom had me tested

    Theres a fine line between genius and crazy .. I'm that line
    and depending on the day I might just step over that line !!!

  8. #8
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    same 3 bullets wit all bases shown

    Attachment 102924
    [SIZE=4][B]Selling Hi Quality Powdercoating Powder

    I carry a Nuke50 because cleaning up the mess is Silly !!

    http://www.bing.com/search?q=nuke50&...7ADE&FORM=QBLH

    I am not crazy my mom had me tested

    Theres a fine line between genius and crazy .. I'm that line
    and depending on the day I might just step over that line !!!

  9. #9
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    This Pic shows both FN and HP bullets from same mold ..
    HP has Black circle around holes
    as you can see the HP is slightly tighter

    Attachment 102926
    [SIZE=4][B]Selling Hi Quality Powdercoating Powder

    I carry a Nuke50 because cleaning up the mess is Silly !!

    http://www.bing.com/search?q=nuke50&...7ADE&FORM=QBLH

    I am not crazy my mom had me tested

    Theres a fine line between genius and crazy .. I'm that line
    and depending on the day I might just step over that line !!!

  10. #10
    Boolit Grand Master popper's Avatar
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    Shot the 31-165C no GC in the blkout today, didn't chrony but calc >1500 fps. 5 shot 1" vertical string @ 50. Just shy of a 4227 compressed load. Have to work on feed problems but for the first day out, I'm happy. Grooveless is still outperforming the 165B with grooves.
    Whatever!

  11. #11
    Boolit Master brstevns's Avatar
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    Thanks guys. I will give it a go and see how it works for me. Have a Old Lyman SC in 311291 and a Lee 405 gr 45/70 to try.

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    popper
    where did you get the grooveless mold ?
    Was looking at kaines but with his rant yesterday about swedging being dead and how he handled the criticism of his claims.... will he really stand behind his product if there is an issue..
    Anytime I have posted results I would post a target with all the load data so people could see the results.. if a known fired projectile was recovered it is included that in the picture as well.. Always try to fire at least 4 to 5 groups before ever calling a load good.. even try to shoot in different temps to confirm avg groupings
    [SIZE=4][B]Selling Hi Quality Powdercoating Powder

    I carry a Nuke50 because cleaning up the mess is Silly !!

    http://www.bing.com/search?q=nuke50&...7ADE&FORM=QBLH

    I am not crazy my mom had me tested

    Theres a fine line between genius and crazy .. I'm that line
    and depending on the day I might just step over that line !!!

  13. #13
    Boolit Grand Master popper's Avatar
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    Smoke it's a 31-165C. It is a GC version, an experiment on how fast I can accurately push it without the GC. Tom has another PB 165. So far the experiment is working well, 1750 from the LR308, close to MOA. Target posted in other threads. Concept is that the rear of the drive band makes a better base than FB, cleaner exit at muzzle.
    Whatever!

  14. #14
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    sounds good.. I have gotten slightly over 2000 FPS with the mil hec 312-159 HP with accuracy .. starts to widen out at 2100 and gone at 2200 FPS.. (unless you consider MOF Accuracy) (minute of feet) but that is only with 2 powders tried
    I getting a few slick sided molds as well to see if I cant amp it up some more
    [SIZE=4][B]Selling Hi Quality Powdercoating Powder

    I carry a Nuke50 because cleaning up the mess is Silly !!

    http://www.bing.com/search?q=nuke50&...7ADE&FORM=QBLH

    I am not crazy my mom had me tested

    Theres a fine line between genius and crazy .. I'm that line
    and depending on the day I might just step over that line !!!

  15. #15
    Boolit Master brstevns's Avatar
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    Must the base of the bullet be coated or does it seem to make a difference?

  16. #16
    Boolit Grand Master popper's Avatar
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    Limited testing I did a year ago gave better performance coating the base &/or GC. Baking should anneal Al GC, I did notice the Cu changes color.
    Whatever!

  17. #17
    Boolit Master brstevns's Avatar
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    Quote Originally Posted by popper View Post
    Limited testing I did a year ago gave better performance coating the base &/or GC. Baking should anneal Al GC, I did notice the Cu changes color.
    Thanks popper. Just what I needed to know.

  18. #18
    Boolit Man
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    Just starting to experiment with PC boolits and full charge loads in 308. Developing in bolt gun for use later in semis.

    I had some old IMR 4895 to use and the RCBS 130SP boolit (141 and 137gr) - with and without GC.

    Starting charge of 44gr is giving me 2560fps from an 18" Criterion bbl - it does show promise as ES was 4 (GC) and 23 fps (no GC)

    Accuracy was around 1.5" at 100yd off bench with bipod w/o a flyer - will have to weigh the boolits to eliminate that possibility

    Today was just an intro to see what may or may not work. Will be working with both .309 and .310 diameters with and without gas checks.

    Goal is to find out if "surplus ammo accuracy" can be obtained using PC boolits at "jacketed bullet speeds". Would eliminate 17 - 20 cents per shot by not using jacketed bullets.

    Will also try some longer bore riding boolits for accuracy. Alloy is scrap WDWW. Primers are Std. Large Rifle.

  19. #19
    Boolit Grand Master popper's Avatar
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    Supersniper - please post some results in the accuracy thread. 0.310 works best in all my 30s except the marlin.
    Goal is to find out if "surplus ammo accuracy" can be obtained using PC boolits at "jacketed bullet speeds". Would eliminate 17 - 20 cents per shot by not using jacketed bullets.
    My answer is yes. And I can save more without the GC & 1/2 the powder. 18 gr of 2400 works good without the GC for a 165 gr boolit.
    Whatever!

  20. #20
    Boolit Man
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    Popper,

    Next range trip (tomorrow?) will be with 46gr which should give me around 2680fps.

    All boolits are weighed to +/- .5gr (match j-words are +/- .3gr) and are 141gr with GC and .310 dia.

    Using Win. cases and F210 primers.

    I know that satisfactory accuracy can be obtained at the slower velocities - I just want to find out what it can or cannot do at full speed.

    Will be shooting bipod off the ground this time for better support.

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Abbreviations used in Reloading

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