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Cast Bullet Muzzle Velocity

Discussion in 'Handloading and Reloading' started by 345 DeSoto, Mar 6, 2013.

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  1. 345 DeSoto

    345 DeSoto Member

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    What's about the limit on FPS for a cast (wheel weights) rifle bullet? At what velocity does barrel leading start to occur...all things being equal?
     
  2. bds

    bds Member

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    Perhaps these will help - http://www.lasc.us/Fryxell_Book_Chapter_3_alloySelectionMetallurgy.htm
    http://www.lasc.us/Fryxell_Book_Chapter_7_Leading.htm
    http://www.lasc.us/Fryxell_Book_Chapter_15_HandgunHuntingCB.htm
     
  3. USSR

    USSR Member

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    Unfortunately, all things are never equal when it comes to shooting cast bullets. It depends upon bore condition, bore-to-bullet size dimensions, and alloy and lube used. I shoot unchecked .30 Carbine bullets at full velocity (~1900fps), but the alloy used is similar to linotype (BHN of ~22). Since you mentioned wheel weights, you can make them quite hard by either quenching them or heat treating them. Still, if they are unchecked, I would stay below 2000fps. Also, I suggest you size them .002" above your rifle's groove diameter. Hope that helps.

    Don
     
  4. fecmech

    fecmech Member

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    The devil is always in the details. It is relatively easy to get very good accuracy with cast rifle bullets up to about the 2000- 2200 fps range. Above that requires good lubes, correct twists, correct powders and alloys along with holding your teeth just right! Leading is not so much the problem as accuracy at higher velocities.
     
  5. A Pause for the Coz

    A Pause for the Coz Member

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    I dont shoot at the upper velocities so haven't run into leading because of over doing it.

    So far I have had leading in 3 guns.
    327 mag. I shot some swc just tumble lubed not sized.
    .316 bullets leave some lead. Sized right at .313 and no leading.

    .380 auto using some as cast 105 gr swc. These were like .360. Again sized right no leading.

    LEE Enfield 303 British. .303 bore and .317 groove.
    Try finding a bullet to fit that.

    Other than that whacky 303 all the leading has been a mistake by me.
    I usually try to hit the 1700 fps range in my long guns with a gas check.

    After shooting 50 cast loads out of my 308 win. I looked in the bore and it was shinny like new.
    Cleaning consists of a shot of bore cleaner, a brush, One patch. Done
     
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