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Thread: How small a metplat still safe?

  1. #1
    Boolit Man
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    How small a metplat still safe?

    Hi all,
    I'm considering a mold for a 30-30 levergun for target work because of its high bc but the metplat is 0.1 of an inch or about half the size of large primer. What would you consider safe in tube mags? I've been shooting a lyman round nose for the life of the rifle without issue and a lee round nose in a .357 without issue for years but I'm interested in what others opinions are. I have searched but couldn't find any specific info on what size metplat is considered safe/unsafe.
    Cheers

  2. #2
    Boolit Master Outpost75's Avatar
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    The meplat on factory Winchester Silvertip .30-30 loads is 0.155", so that is a good number.
    The ENEMY is listening.
    HE wants to know what YOU know.
    Keep it to yourself.

  3. #3
    Boolit Master
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    When reloading CB's for my 30/30, I use an RCBS Cowboy seating die. That seating die puts a small flat nose on the boolit of about 1/8" when using a soft enough alloy. That flat nose has allowed me to use round nose boolits and even the Lyman 130 gr plain base semi-spire boolit. That 130 gr boolit is a joy to shoot at an MV of about 1350 in my 30/30.

  4. #4
    Boolit Master
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    See no harm in shooting spitzer type bullets in a 30-30 lever. So long as their hand fed into the chamber one by one. As a matter of fact I did do just that during one Deer season._"A foolish young mans behaviour." so said my Father up until I dumped a BIG body Spike in his driveway for my retired parents supper table enjoyment
    As I recall it surely made my deer hunting season interesting. >Kind'a like handicapping yourself too> one shot one kill.

    As far as answering the available boolit question. Most jacketed pronounced Round Nose soft point bullets can be stacked end to end without worry.
    Cast on the other hand? Depends on material recipe'd and BHN factor at seating. I certainly wouldn't promote any cast boolits profile other than a Fat Nose considering such boolits are often made from CO/WW having a BHN 12 to 18. I'm sure a pointed cast with that 12-18 BHN factor has the hardness to set off a calamitous discharge event. Where as a Jacketed lead tiipped Round Nose has a BHN factor close to 7 or 9 in measure.
    "JUST A OLD DEPLORABLE THAT'S IRREDEEMABLE."

  5. #5
    Boolit Master

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    Just limit yourself to two rounds in the gun. Load one in the chamber and one in the magazine.

  6. #6
    Boolit Master
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    For target shooting, load one at a time directly into the chamber to avoid marring the bullet.

  7. #7
    Boolit Master buckshotshoey's Avatar
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    Quote Originally Posted by BK7saum View Post
    Just limit yourself to two rounds in the gun. Load one in the chamber and one in the magazine.
    Very astute observation. If the pointed bullet will cycle properly that is.

  8. #8
    Boolit Man
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    Thanks for the replys. Single loading is always an option I guess but you never know when the ammo might be loaded by accident into the tube. I think what I'll do to test it is sharpen one of my hard lead projis I have now to a .10 metplat and see if they set off a large rifle primer in an empty case when struck with a hammer. I think it would have to be a pretty hard to detonate it.

  9. #9
    Boolit Master GARD72977's Avatar
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    I think you would have a hard time making a primer go off with flat point the same size as a primer. Nothing different than seating a primer with your press. I would use them

  10. #10
    Boolit Master

    alamogunr's Avatar
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    I seem to remember an experiment on this subject some years back. I think it was reported in either Precision Shooter ore The Accurate Rifle, both now defunct. I have a couple of piles of each but no enthusiasm for searching thru them. I would not try to remember my best guess as to the results but will say it surprised me.
    John
    W.TN

  11. #11
    Boolit Master


    kmrra's Avatar
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    Quote Originally Posted by OverMax View Post
    See no harm in shooting spitzer type bullets in a 30-30 lever. So long as their hand fed into the chamber one by one. As a matter of fact I did do just that during one Deer season._"A foolish young mans behaviour." so said my Father up until I dumped a BIG body Spike in his driveway for my retired parents supper table enjoyment
    As I recall it surely made my deer hunting season interesting. >Kind'a like handicapping yourself too> one shot one kill.

    As far as answering the available boolit question. Most jacketed pronounced Round Nose soft point bullets can be stacked end to end without worry.
    Cast on the other hand? Depends on material recipe'd and BHN factor at seating. I certainly wouldn't promote any cast boolits profile other than a Fat Nose considering such boolits are often made from CO/WW having a BHN 12 to 18. I'm sure a pointed cast with that 12-18 BHN factor has the hardness to set off a calamitous discharge event. Where as a Jacketed lead tiipped Round Nose has a BHN factor close to 7 or 9 in measure.
    I see no problem with single shots , My go to gun for hunting is a Ruger #1 I used it for 35 years or so never regretted it , makes you a better shot if you know you only have one shot.
    I like 1911's and Wheel Guns , Wood Stocks and Blue Metal , Dislike Black on Black and Magazines on Rifles whats this country coming to.
    Amateur Radio Station -KB5SMG- since 1994 Call sign change as of 8-15-17 WB5MG

  12. #12
    Boolit Master muskeg13's Avatar
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    Are the meplats on these big enough? (.44 Mag LP primers are the same diameter as .30-30 LR primers.) Err on the side of safety. Magazine tube explosions are not a myth!
    Click image for larger version. 

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    Last edited by muskeg13; 02-27-2017 at 04:23 AM.

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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