155 or 180 grain

This is a discussion on 155 or 180 grain within the Defensive Ammunition & Ballistics forums, part of the Defensive Carry Discussions category; I have a 40XDSC and 40XDm. I carry the SC for CC and the XDm is in a Gunvault by my bed for Home Defense. ...

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Thread: 155 or 180 grain

  1. #1
    New Member Array lungbuster's Avatar
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    155 or 180 grain

    I have a 40XDSC and 40XDm. I carry the SC for CC and the XDm is in a Gunvault by my bed for Home Defense. Both guns like the Gold Dots and I really can't tell a difference in the 155 or 180 grain in terms of accuracy for either gun.

    Which grain bullet would be best suited for CC and HD. What are the pros and cons of these two bullet weights?

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  3. #2
    Member Array Ronny's Avatar
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    Heavier bullets penetrate better to reach vital organs like the heart, lungs, and liver. Lighter bullets do more surface trauma but may fail to penetrate adequatly. The FBI uses a 165 grain round. I have my sig 229 loaded with 165 gr HST rounds. Your gold dots are an awesome bullet choice, btw, and they are used by hundreds of law enforcement agencies.

    I like to see gel tests like these Brass Fetcher Ballistic Gelatin testing

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    Quote Originally Posted by Ronny View Post
    Heavier bullets penetrate better to reach vital organs like the heart, lungs, and liver. Lighter bullets do more surface trauma but may fail to penetrate adequatly. The FBI uses a 165 grain round. I have my sig 229 loaded with 165 gr HST rounds. Your gold dots are an awesome bullet choice, btw, and they are used by hundreds of law enforcement agencies.

    I like to see gel tests like these Brass Fetcher Ballistic Gelatin testing
    I concur...I also use 160gr HST rounds in my P229/.40
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    It all varies from ammo to ammo, some 180 penetrates and expands better, some 155 does. In 40, I read ballistic reprots on 180 Winchester Ranger JHP, it tested best for 40 but not asa well in 9mm. I now carry it in my FNP40.
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    Distinguished Member Array Agave's Avatar
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    The Border Patrol uses 155gr HST. That's what I still carry.
    The preceding post may contain sarcasm; it's just better that way. However, it is still intended with construction and with the Love of my L-rd Y'shua.

    NRA Certified Pistol Instructor, Tennessee Certified Instructor

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    My thought: Unless there's a reason otherwise, hit them with the biggest, heaviest bullet you can.
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    Distinguished Member Array Knightrider's Avatar
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    Go with the 180 gr
    Glock: G22 .40 S&W and G23 .40 S&W Sig Sauer: P938 9mm Smith and Wesson: Model 437 .38 Spl, Model 65 357 Mag, and Sigma SW9VE 9mm

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    Senior Member Array jem102's Avatar
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    165 gr Gold Dots in both my G27 & 23.
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    it's all in the shot placement weather it's 155 , 165 180 etc.

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    In .40, most available practice ammo is 180 grain. Shoots to the same POI as 180gr. GDs. That, and I just really like that big cavity in the 180s.
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    Senior Member Array Texag's Avatar
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    Assuming they both meet FBI minimum penetration specs, just get what you can. 180 will probably do better against barriers and have better penetration, 155gr will probably have slightly better expansion.

    Either way, when using quality ammo the exact choice is far less important than your training and mindset.

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    VIP Member Array Tubby45's Avatar
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    Both the 155gr and 180gr GDHP loads are highly recommended by those with knowledge (professional) in terminal ballistics. Pick one.
    07/02 FFL/SOT since 2006

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    I like the 165 grain myself. I prefer the higher velocity, and I don't see myself shooting through barriers with it.

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    I use the heavier options in all calibers. 147gr HST in 9mm, 180gr HST and Winchester Ranger in .40sw, and 230gr HST in .45acp.

    Unless I am using Corbon DPX which is lighter by default, then I use the heaviest option they offer. I have some on hand and found it quite good in my firearms, but it's too expensive to stock up on IMO.
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    I'd say it's splitting hairs, but for .40 S+W in short-barrelled guns (3-inch range) I'd use lighter bullets, and in longer-barelled guns (4-inches or more) I'd use heavier.
    Smitty
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