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Underwood 220 gr hardcast

Discussion in 'The 10 Ring' started by deadandgone, Sep 21, 2012.

  1. doverpack12


    Jul 24, 2012
    I sent Underwood an email last night after my post. Here is the reply i got early this morning.

    My question is on item number 242. Is the hard cast bullet gas checked?
    No, it is not.
    If you have any other questions or need anything else, please let me know.
    Thanks, Kevin
  2. SDGlock23

    SDGlock23 Glockoholic

    Merely guessing here, but they may be SNS casting hardcast 220gr. bullets. I have a number of these but I've never shot any out of the stock bbl and they're not gas checked either. I can't imagine they would lead terribly, but would expect them to lead some.

  3. SolidBrass

    SolidBrass Against Shiny

    Sep 2, 2011
    Underwoods TMJ 200 and 220 Hardcast are both "out of stock" :faint: I'll hold out for re-supply instead of buying DT's overpriced/underpowered offering. Until then my best bear round is the Underwood XTP sadly.
  4. _The_Shadow

    _The_Shadow Ret. Fireman

    Jul 23, 2007
    Southeast, LoUiSiAna
    Handloading and casting are insurances to eliminate short falls and allows you to produce custom premium quality ammo and some savings over the long haul.
    Good luck!
  5. pasky2112

    pasky2112 Senior Member

    Aug 2, 2012
    Brevard, FL
    Underwood uses a 24# spring...he told me. He shoots hot all the time, so I'd imagine. I use a 22# SS rod/spring. Works great in both worlds.
  6. nickE10mm

    nickE10mm F.S.F.O.S.

    Apr 13, 2004
    Wichita, KS
    ^^^ this ....

    Everytime I hear someone post "gosh, now i gotta save for XXXX ammo" I just chuckle and think about my beloved Lee Classic Turret in my basement.

    If you have the means to get setup for reloading ($300 or so up front), I'd HIGHLY recommend it.
  7. harrygunner


    Sep 4, 2010
    Wanted to get some chronograph results and see how the Underwood 220gr hard cast works in a Glock 29.

    I decided to compare the spread of hits of the 220gr HC between my 1911 with its Bar-Sto barrel and my third generation Glock 29. The G29 is standard, except for a metal recoil rod assembly with a standard 17lb recoil spring.

    I placed the target at 30 yards and shot slow strings with my hands resting on a shooting bag. Took lots of time to make sure my sights were aligned consistently. Each square on the target is 1x1". The group in the upper left is from the Glock. The better centered group is from the 1911. Proves in my mind that the Glock barrel does stabilize the 220gr ammo. Then I shot the Glock at a distinguishable formation on a berm about 60 yards away, standing off-hand. The hits were comfortably close to the target, showing again, the bullets stabilize.

    Here are the chronograph results

    Altitude: 3221 ft, Temperature: 48 degrees, Barometric pressure: 26.9 inHg

    10mm Underwood ammo -

    Glock 29

    180gr XTP : 1263, 1266, 1255, 1253, 1299 : avg 1267 ft/s
    200gr XTP : 1133, 1120, 1141, 1153, 1170 : avg 1143 ft/s
    220gr HC : 1075, 1082, 1084, 1104, 1094 : avg 1088 ft/s

    1911 4.25" Barrel

    180gr XTP : 1271, 1265, 1269, 1299, 1253 : avg 1271 ft/s
    200gr XTP : 1181, 1187, 1199, 1183, 1167 : avg 1183 ft/s
    220gr HC : 1152, 1153, 1165, 1156, 1161 : avg 1157 ft/s

    Target attached:

    Attached Files:

    Last edited: Nov 12, 2012
  8. bushjumper


    Jul 12, 2002
    Arizona, USA!
    Was one of these a cut and paste gone bad? They are exactly the same...(well except for your calculation of the average :D)

    BTW I just got some of the 220 HC in the mail, it's back in stock (as of last week anyway).
  9. harrygunner


    Sep 4, 2010
    Thanks. Corrected that line.
  10. NoJoy


    May 4, 2005
    Does anyone know if Underwood is using a stock barrel to achieve his chrono results? 220gr@1200fps out of a 4.6" barrel is outstanding.
  11. nickE10mm

    nickE10mm F.S.F.O.S.

    Apr 13, 2004
    Wichita, KS
    My GUESS would be 800X... but possibly Longshot.
  12. Buckeye 7x57

    Buckeye 7x57

    Dec 9, 2009
    Central Ohio
    I just received my new shipment from Underwood including a box of 220 grain hardcast. I love Underwood's speedy shipping and customer service. Ordered on Sat. And received them on Tues. The 220 grain loads will be my new woods carry round.

    posted using Outdoor Hub Campfire
  13. gatorboy


    Jul 26, 2001
    It's pretty nice
    DT does as well. It gives a few more FPS as the extra weight delays the unlocking a fraction of a fraction of a second. When I shot alot of hot 10mm I found 21# (G29) and 22# (G20) were plenty for the most powerful loads. The 24# G20 and 23# G29 springs returned diminishing results in my experience. Lighter springs really do result in less recoil, especially muzzle flip but more frame battering. There is more battering when slide go's back to battery with heavier springs though. If stock is 17-18#, a 22# spring is 20-25% heavier. Plenty for two well-designed pistols with very heavy slides by any standards.
  14. nickE10mm

    nickE10mm F.S.F.O.S.

    Apr 13, 2004
    Wichita, KS
    Spot on, I agree. A little increase in spring weight is appropriate but nothing overkill.

    I use a 20lb spring for NUCLEAR loads in my 6" Fusion and had a 20-22lb spring in my G20 and they are or were both perfect.