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Thread: Mihec 502-700 Mold

  1. #221
    Boolit Buddy bpatterson84's Avatar
    Join Date
    Feb 2016
    Location
    Ft Worth, TEXAS
    Posts
    215
    My goodness Miha ships fast! There was a mixup with my order, no worries, it got to me in less than 2 weeks. Got it the other day, heat cycled twice @ 400f and twice @ 500f for an hour each, this is my first brass mold and it's what I read to do. This is also my first HP mold, so I jumped in off the deep end with the pentapoint. These mold blocks are HUGE!!!!! Good point on the warm up period gentlemen, it acts like a big heatsink for quite a while, I saw the advice against, but went ahead and warmed it up only leaving it on top of my 4-20 filling the cavities and doing some deposition on the sprueplate to get some heat into it. prolly 10-15 minutes I was dropping boolits without crinkles, but was splitting the blocks a lil fast and crumbling the driving bands a little bit, the advice that these take quite a while to solidify is spot on. I finally fell into a groove on the process timeframe, after the mold gets real hot it doesn't mind the lead temp cooling off. I dropped 19.4lbs of keepers, and am excited to get them powdercoated and into the side of a pig!



    "The .44 magnum. The largest handgun in the world." Hahaha! Lyman 429-421 mold for size reference!

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    A 9mm and a long OAL loaded 400gr Lee .480 Ruger for size comparison!

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  2. #222
    Boolit Buddy bpatterson84's Avatar
    Join Date
    Feb 2016
    Location
    Ft Worth, TEXAS
    Posts
    215
    Also to add, sans PC and a GC, they're dropping between 625gr and 630gr using range scrap.


    Has anyone worked up a warm load they'd like to share using the penta's? Want at least 1000fps......

  3. #223
    Boolit Master

    DukeInFlorida's Avatar
    Join Date
    Oct 2009
    Location
    East and South of you
    Posts
    3,576
    Lil Gun powder is the go to for a wrist breaking experience with this boolit. You might call the manufacturer and get a starting load from them.
    I prefer to use Trail Boss powder for a easier on the wrist experience.

    Quote Originally Posted by bpatterson84 View Post
    Also to add, sans PC and a GC, they're dropping between 625gr and 630gr using range scrap.


    Has anyone worked up a warm load they'd like to share using the penta's? Want at least 1000fps......


    NRA Life Member
    NRA Certified Metallic Cartridge Reloading Instructor

    Author of a book on reloading
    ILSA MEMBER http://www.internationallawnsteelsho...ssociation.com
    NRA RANGE SAFETY OFFICER


  4. #224
    Boolit Mold
    Join Date
    Sep 2020
    Posts
    10
    Hi,

    I am new to the forum. I am trying to find out if Mihec is going to manufacture another batch of 502-700 molds for the 500 magnum. Any advice appreciated.

    Thanks

    Clive

  5. #225
    Boolit Mold
    Join Date
    Oct 2014
    Posts
    20
    Quote Originally Posted by cleah View Post
    Hi,

    I am new to the forum. I am trying to find out if Mihec is going to manufacture another batch of 502-700 molds for the 500 magnum. Any advice appreciated.

    Thanks

    Clive
    sent him an pm.. not sure how you get somebody to start up one of these... but there on some lighter grain moulds on his website... but id love a 700 too

  6. #226
    Boolit Buddy
    Join Date
    Mar 2018
    Location
    Sioux Falls, SD
    Posts
    295

  7. #227
    Boolit Mold
    Join Date
    Sep 2020
    Posts
    10
    Thanks for the tips. I just bought the M P Mold and was looking for exactly the info you offer. I could use any tips re powder charge for each of the three bullets (T Rex 700 gr, round hollow point and pentagon hollow point). I have been using 10.0 gr of Trail Boss with the 440 gr Lee RNFN and it is quite comfortable. I have the 8 3/8" barrel.

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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