Gold Dots 40S&W 155gr or 165gr

This is a discussion on Gold Dots 40S&W 155gr or 165gr within the Defensive Ammunition & Ballistics forums, part of the Defensive Carry Discussions category; I know the subject of SD ammo is much discussed and it makes it difficult to decide. So, after all the reading of opinions and ...

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Thread: Gold Dots 40S&W 155gr or 165gr

  1. #1
    Member Array davidw's Avatar
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    Gold Dots 40S&W 155gr or 165gr

    I know the subject of SD ammo is much discussed and it makes it difficult to decide. So, after all the reading of opinions and Dr. Roberts reports I have decided not to go crazy any longer. My choice for now will be the Speer Gold Dot .40S&W JHP.

    My question is this, is there a big difference between using the 155gr or the 165gr in a 3.5" barrel (M&P40C)? I mean a real life difference.

    I know there is a 180gr and some go for bigger is better. I feel that what many say about velocity vs expansion make 180gr prohibitive from a 3.5" barrel makes sense.

    155 or 165gr and why please.
    Thanks

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    Senior Member Array Freedomofchoice's Avatar
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    I don't know for sure, but, I figure shorter barrel you need a little help gaining velocity; therefore, lighter bullets. I carry 155 gr. bullets in my 40.

    .
    .

    Too light for heavy work, too heavy for light work!

    pb

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    VIP Member Array Majorlk's Avatar
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    I shoot 155, 165 and 180g in my PT-140 and can detect little difference between any of them in felt recoil or getting back on target.

    Assuming the same bullet placement, I doubt there will be any significant difference in the performance - certainly not anything that the target would be aware of if hit with a double-tap.
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    Member Array theheater905's Avatar
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    When I called Speer and spoke with the LE rep my understanding is that the composition or metallurgy of the bullet is more responsible for the expansion than velocity. The Speer short barrel ammo also uses a different powder that is faster burning. I always liked the 180gr in either Speer Gold Dot or Federal HST. Both have about the same penetration but the HST seems to expand larger.

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    VIP Member Array jwhite75's Avatar
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    I use the 180 grain in mine and they do fine shot them in to armor and gelatin. They expand great. However out of your barrel I wuold try to build velocity too... the 155 grain would be my suggestion.
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    VIP Member Array Stevew's Avatar
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    Speer claims the 180 GDSB has a greater cavity volume than other GB for expansion at short barrel velocities. I would go with whatever feeds reliable.
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    Member Array RA229's Avatar
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    My question is this, is there a big difference between using the 155gr or the 165gr in a 3.5" barrel (M&P40C)? I mean a real life difference.


    There is not going to be a big difference in 10gr, The BG surely won't care. Either one will put him on the medical examiners table providing good shot placement.
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    Member Array xdglocker's Avatar
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    Quote Originally Posted by Stevew View Post
    Speer claims the 180 GDSB has a greater cavity volume than other GB for expansion at short barrel velocities. I would go with whatever feeds reliable.
    Ditto...I concentrate more on expansion characteristics first. Then make sure my choices feed reliably and go from there.

    But i guess the best way to find out what you want is to aquire some of each and see how it shoots for yourself.
    Bob

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    Distinguished Member Array AutoFan's Avatar
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    They should expand in a near identical manner (same bullet design, caliber, manufacturer), and I would expect the heavier bullets to penetrate deeper (higher sectional density, more momentum). How well they shoot in your gun, by you, can only be determined by shooting them.

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    Member Array Biomortis's Avatar
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    Sgt. Z., thanks for the link. That is some fantastic info to have. I am glad to see that my EDC SD ammo is on the list of recommended ammo. .40 Winchester Bonded 180gr JHP which is sold retail as the PDX1 for like $25/20 box. I bought a case (500 rds) at ammoman.com for $249 shipped. I'd buy a couple more if I had the cash to spare at the moment. They shoot fantastically in my Glock 27 and are super accurate and consistent.
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