10mm vs. .40...thoughts? - Page 6

10mm vs. .40...thoughts?

This is a discussion on 10mm vs. .40...thoughts? within the Defensive Carry Guns forums, part of the Defensive Carry Discussions category; glockman 10mm Lotta misinformation here. Here are the facts and some comparisons to think about. First, the 10mm falls in between the 357magnum and 41 ...

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Thread: 10mm vs. .40...thoughts?

  1. #76
    Member Array 357 Terms's Avatar
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    glockman 10mm
    Lotta misinformation here. Here are the facts and some comparisons to think about.
    First, the 10mm falls in between the 357magnum and 41 magnum
    Not true!

    The 10mm and the 357 are very close, almost identical ballistically.

    LOL!! the 10mm is nowhere near the 41mag! some 10mm fanboys point to Win. 175grn silvertips (loaded down 41 mags)

    My 6.5in Blackhawk pushes my (handloads) 180grn XTP's at 1400fps, and will outshoot any Glock at 50yrds!

    AS to the 40 vs. 10mm; the 40 is plenty good enough for most ,is not all SD scenarios.


  2. #77
    Member Array attrapereves's Avatar
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    Quote Originally Posted by 357 Terms View Post
    glockman 10mm


    Not true!

    The 10mm and the 357 are very close, almost identical ballistically.

    LOL!! the 10mm is nowhere near the 41mag! some 10mm fanboys point to Win. 175grn silvertips (loaded down 41 mags)

    My 6.5in Blackhawk pushes my (handloads) 180grn XTP's at 1400fps, and will outshoot any Glock at 50yrds!

    AS to the 40 vs. 10mm; the 40 is plenty good enough for most ,is not all SD scenarios.
    I handload 180gr bullets in 10mm to around 1300fps out of my Glock 29. I'm sure if I had a 10mm with a 6.5" barrel, the velocity would be close to 1400fps.

  3. #78
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    ^^
    LOL... That still doesn't put it ahead of the 357.

    When you factor in sectional density the 357 outperforms the 10mm.

    It comes nowhere near hot loaded 41 magnum levels.

  4. #79
    VIP Member Array glockman10mm's Avatar
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    357Terms, you have alot to learn. While it is true that the 10mm will not match the 41 magnum in the heavier loadings, the similarity for the 357 and 10mm likewise end when you get to the heavier loadings. The 357 is lost in the dust beyond 180 weight loadings.
    Ignorance is a long way from stupid, but left unchecked, can get there real fast.

  5. #80
    VIP Member Array glockman10mm's Avatar
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    As far as sectional density, well, SD always favors a smaller caliber, no secret there. But there's more to it. It's a matter of weight, diameter and hydraulics.

    I took my 41 mag over the 10mm in Africa because of this very reason. At some point, loading a heavier bullets in a case more limited in capacity will reach a point of diminishing returns.
    Sure, the 35 caliber in the 357 is on par with the 10mm in weights up to 180 grns. But after that, the 357 magnum case is just to small to handle the same payload as the 10mm.
    Ignorance is a long way from stupid, but left unchecked, can get there real fast.

  6. #81
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    The 357 is lost in the dust beyond 180 weight loadings
    I am pretty certain that I am not "ignorant" when it comes to loading the 357 mag. And I am familiar with the 10mm enough to know that the cross sectional density of the 357 mag is the same in the 158grn loads that the 10mm is in its200grn loads.

    When you consider max loads the 10mm falls short of the 357.

    Please glockman; post info to enlighten me!

  7. #82
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    Design velocity window comparisons from Hornady data regarding their XTPs;

    10mm 155gr - 850fps to 1300fps _ sectional density .138
    .357mag 158gr HP - 700fps to 1400fps
    .357mag 158gr FP - 1150fps to 1800fps _ sectional density .177

    10mm 180gr - 750fps to 1450fps _ sectional density .161
    .357mag 180gr - 900 to 1700fps _ sectional density .202

    10mm 200gr - 700fps to 1200fps _ sectional density .179
    It isn't just the ability of the caliber to propel the projectile, the bullet has to be able to perform. At the levels that the 10mm and 357 max out the 10mm falls short in its performance.

    And not just in the XTP!

    There are literally hundreds of bullet choices for the 357 mag. Very few for the 10mm, most if not all are designed for .40 cal velocities.

  8. #83
    VIP Member Array glockman10mm's Avatar
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    Ok. First of all, there is a difference in " cross sectional density" and sectional density, so make up your mind which one you want to compare, because there is a big difference in the two, especially when comparing as you did 158 357 and 10mm 200 weight bullets.

    I think you are a little over your head here, so I'll leave it at that. For the next lesson, I insist on tuition, grasshopper.
    Ignorance is a long way from stupid, but left unchecked, can get there real fast.

  9. #84
    VIP Member Array glockman10mm's Avatar
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    Quote Originally Posted by 357 Terms View Post
    I am pretty certain that I am not "ignorant" when it comes to loading the 357 mag. And I am familiar with the 10mm enough to know that the cross sectional density of the 357 mag is the same in the 158grn loads that the 10mm is in its200grn loads.

    When you consider max loads the 10mm falls short of the 357.

    Please glockman; post info to enlighten me!
    cross sectional or sectional? Let me make something clear; the 357 mag is a fine cartridge, as good as most anyone would want. It is a staple magnum cartridge, and theres not much it wont do. I am not knocking it. Choosing between it and the 10 really comes down to platform preference, and what you want to do. Up to the 180 grn loads they are pretty close, with the exception of 6 vs 15 capacity. But when you move up to 200+ weight bullets, it starts losing ground.

    The same comparison could be made with the 44 mag vs 45 Colt. Ability to effectively handle heavy loads. Same with the 270 vs 3006. Efficient use of heavier loads.
    Sectional density, always favoring the small caliber does aid in penetration qualities, but a bigger bullet, has more mass, downrange energy savings and makes a bigger hole.
    I will stand by what I said before, the 10mm in its full house loads stands balistically right in between the heavier 357 loadings and lower end 41 magnum loadings.
    Ignorance is a long way from stupid, but left unchecked, can get there real fast.

  10. #85
    Senior Member Array MichSteve's Avatar
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    I have interest in the 10mm for hunting and backpacking, I like the Glock platform so I am thinking the G20, I do reload so I would reload for most of my needs or rely on Buffalo Bore or Double Tap for heavy +P power for critters in our area. I am also, intrigued by the Sig 357 for SD and woods carry, it seems to be very capable for woods gun and SD. Any thoughts or experience with both.

  11. #86
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    sectional density.

    Still waiting on data from ya.. "master"

    For the next lesson, I insist on tuition, grasshopper.
    It isn't teaching when all you have is opinion.

  12. #87
    VIP Member Array glockman10mm's Avatar
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    Quote Originally Posted by 357 Terms View Post
    sectional density.

    Still waiting on data from ya.. "master"



    It isn't teaching when all you have is opinion.
    As you say. I'll submit to your overwhelming knowledge and experience on the matter.
    Ignorance is a long way from stupid, but left unchecked, can get there real fast.

  13. #88
    VIP Member Array glockman10mm's Avatar
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    Quote Originally Posted by MichSteve View Post
    I have interest in the 10mm for hunting and backpacking, I like the Glock platform so I am thinking the G20, I do reload so I would reload for most of my needs or rely on Buffalo Bore or Double Tap for heavy +P power for critters in our area. I am also, intrigued by the Sig 357 for SD and woods carry, it seems to be very capable for woods gun and SD. Any thoughts or experience with both.
    There are a lot of good powders available for the 10mm. Its easy to load, and you can run lead hardcast bullets thru the glock as long as they are gas checked. For a woods gun, I prefer the 10mm due to it being capable of heavier loadings than the 357 sig, but the 357 Sig is a hot round, and hard to beat for magnum performance against human threats.

    For max velocity in 10mm, look for Blue Dot or AA9.
    Ignorance is a long way from stupid, but left unchecked, can get there real fast.

  14. #89
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    Lets look at Double taps offerings in "heavy rounds" for the;
    10mm
    357 mag
    41mag
    all with similiar bullet configurations (Wide flatnose gas check)

    10mm-
    200grn 1300fps from a Glock 20

    357 mag
    200grn 1315fps from a 6in gp100

    41mag
    250grn 1370fps from a 6.5in Blackhawk

    As you can seethe 10mm doesn't outperform the 357 ( when you consider Sectional Density it fall behind)

  15. #90
    Senior Member Array MichSteve's Avatar
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    Thanks Glockman10mm for the advice on the powers, and the thoughts on 10mm.

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