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40 cal.

Discussion in 'Handloading and Reloading' started by sbbb, Nov 4, 2009.

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  1. sbbb

    sbbb Member

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    I keep hearing you can download a 40 to shoot just as soft as a 9mm.

    could anyone give me some advice on a 200 gr.
    bullet loaded with WSF that would be as soft
    shooting as a 9mm.
     
  2. rcmodel

    rcmodel Member in memoriam

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    You would have to get a 200 grain bullet down to 800 FPS for it to have a similar recoil as a 124 going 1,200 FPS..

    But a 200 grain bullet is excessively heavy in a 40 S&W.
    Hard to find WSF load data for that heavy a bullet!

    180 is the standard heavy bullet weight for a .40, and they go down from there.

    If you were to load a 150 grain .40 bullet to the same velocity as a 9mm 147 grain, the recoil would be basically the same.

    Bore size doesn't enter into the equation for figuring recoil.

    rc
     
  3. Walkalong

    Walkalong Moderator

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    Universal Clays remains clean burning with light loads in .40. I have not tried WSF and light loads, but would not expect it to do quite as well. Only one way to find out.

    Like rcmodel posted, 180 and under is the norm for .40. 200 Gr bullets are mostly used in 10MM.

    Try the start loads in manuals and see if that is light enough to do what you want. I use 155 Gr bullets for light .40 loads. The 180's work as well, but the 155's are cheaper.
     
  4. Brillo

    Brillo Member

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    Wrong bullet and wrong powder for a low recoil load in a 40 S&W. If you want a very light 9mm type of load suggest getting Sierra or Nosler 135 gr bullets and use a relatively fast powder such as Unique (5.7 gr.), Alliant No. 5 (7.3 gr.), or Win 231 (5.2 gr.). you may need a lighter recoil spring if it doesn't cycle correctly.
     
  5. schmeky

    schmeky Member

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    sbbb,

    I have experimented with the .40 quite a bit, using medium and heavy weight bullets. I have used a 220 gn LSWC and loaded it down to 2.8 gns of Bullseye, and 2.8 gns of N310. Shoots very soft and the accuracy was "OK" at 25 yards.

    I have had outstanding success using the 170 LSWC from Missouri Bullet loaded with 3.4-3.8 gns of Bullseye, and 4.0-4.5 gns of WW231, seated to 1.140 OAL. My CZ-75/.40 thinks it's a target gun with these loads (1.25" rested at 25 yards). Recoil is in the "mouse fart" category. There is virtually no recoil.

    I could never get the 220 LSWC's do shoot as well as the 170's, and I tried Solo 1000, Clays, BE, N310, and 231.
     
  6. MichaelK

    MichaelK Member

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    The starting load I tested with Hornady's 155 grain hollowpoint was 9.0 grains of Blue Dot, which should give about 1000fps. That worked the action of my pistol and rifle just fine and gave good accuracy in both. That should be a good 9mm eqivelent for you.
     
  7. dsv424

    dsv424 Member

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  8. rfwobbly

    rfwobbly Member

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    +1 You can get a lighter spring set for about $18 at Wolff Spring.
     
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