First of all, what exactly are you shooting for? For hunting and any kind of defense shooting, a larger grain is generally better. Larger grain, heavier bullets, generally perform better inside a target. For example, jacketed hollow point ammunition performs extremely well inside of a live target, while full metal jacket ammunition will not do as well.
If the choice is between heavier full metal jacket and lighter jacketed hollow point, I would go with jacketed hollow point every time. It expands on impact, and damages more tissue. However, if there are multiple grains of jacketed hollow point ammunition, heavier is generally a little better. Your best bet is to try and find some ballistics testing or gelatin testing that others have done to see which performs better.
It is calculated by multiplying the bullet weight by the velocity, then dividing by 1, Two different rounds could have different bullet weights and different velocities, but equal the same power factor. To learn more about power factor, check out this post. Lighter bullets must travel faster than heavier bullets to reach the same power factor and therefore require more gunpowder. This means that the lighter bullet will spend less time in the barrel than the slower moving heavy bullet, causing a difference in perceived recoil.
Accuracy- In general, you may find that your gun performs with better accuracy with a certain bullet w eight. This can differ from gun to gun and experimenting with different rounds is the best way to figure out what works best for you.
A heavy bullet may be less likely to be affected by external conditions such as wind, b ut it also may be harder to stabilize resulting in keyholing, or the bullet entering the target sideways. Your intended use is important and will help to determine what cartridge is best. Range Training- There are many shooters who have never paid any attention to bullet weight. They typically shoot whatever is cheapest and most available without any problems.
Shooters who just want to plink at the range can usually find an affordable round that consistently makes both their gun and wallet happy. Bullet penetration and expansion are far more important than weight when selecting a round that will be used on targets other than paper and steel. Since the point is to stop a threat, you want ammo that travels deep enough into the target to hit vital organs while expanding enough to not leave the body and cause collateral damage.
There are people who swear by a heavier bullet weight in their self defense rounds and it is true that certain brands and product lines have better track records than others. You may find a lighter bullet has performed consistently better than a heavy bullet in a ballistic testing or vice versa ; because of all the factors involved, relying solely on bullet weight is unrealistic.
Features such as the no-clog hollow point bullet and a design and powder load specifically for use in a full size handgun contributed to the decision as well as consistent performance in testing. Ultimately, find a cartridge that performs well under testing or real world applications and most importantly, one that functions well in your gun. Hunting- Picking out a round for hunting follows the same line of thinking as picking out a round for self defense — you want to stop in this case, kill your living target.
Essentially the idea comes down velocity vs momentum. A lighter-for-caliber projectile will travel at a faster velocity, but a heavy-for-caliber projectile will have a bit more momentum. Momentum, after all, is Mass x Velocity and therefore means more force hitting the target, when quantified by a metric other than foot-pounds. Since the unit of momentum is kilogram meters per second, we have to use metric units.
Anyhow, a gr projectile has a mass of 7. A gr projectile with a velocity of fps ballpark for gr 9mm would have momentum of 2. By contrast, a gr. As you can see by these back-of-the-envelope calculations, a heavier-for-caliber projectile has slightly more momentum than a lighter-for-caliber projectile sitting over the same charge of powder.
It is also the case that heavier bullets will tend to have higher sectional density than lighter bullets of the same caliber, though it's typically a very small advantage. Sectional density - the density of a section of material - is a predictor of a projectile's ability to penetrate through resistance, meaning a heavier bullet has a slightly better propensity - on paper - for penetrating deeper into tissue. For instance, many gr 9mm hollow points will have an SD around 0. Hardly a game-changer.
Again, for handgun bullets. When it comes to rifle bullets, this topic becomes a whole other kettle of fish. However, there are some other reasons why a person might prefer heavier or lighter handgun ammunition.
This is especially important for people who shoot a suppressed pistol, and those who prefer a larger caliber than 9mm. The point of running a can is to reduce the noise level of the report.
The closer to or further over supersonic velocities, the more noise. Heavier bullets are slower and are often subsonic, meaning an even greater noise reduction is achieved if shooting, say, grain 9mm ammunition already subsonic or grain.
As far as calibers larger than 9mm, you can actually decrease wear and tear on your pistol and curb felt recoil a bit though not recoil energy by switching to a heavier grain weight. So, to explain that, the faster a bullet leaves the barrel the faster the slide is sent traveling back.
Sir Isaac Newton wins again. Also, the portion of recoil that you feel is influenced by the force of the slide going back. That's part of what makes the muzzle rise! By shooting a heavier projectile, you'll actually feel a bit less recoil since you will have reduced slide velocity.
Therefore, you can tame the felt recoil of. Granted, this only works to a degree, so don't get too ahead of yourself. However, those practical considerations aside, what are some other considerations when it comes to projectile grain weight? The two attributes people are concerned about when it comes to handgun bullets are penetration and expansion. It was 2 as I buy two guns of the same caliber but usually two different manufacturers that shoot the same round so both my wife and I can shoot usually by EOD at the table with bean bag rests , at the same time which is always fun shooting at the same 4 or 5 metal targets that we set starting at around 25yds and end up with the last being around yds.
So back to the 17hmr fun or NO fun as I will explain and perhaps endorse Mr. I just added the Ruger bolt action Precision Rifle also chambered in 17hmr to my Marlin model 17V, and my Savage Model 93R17 all with heavy at least semi floating barrels. In fact, in the beginning I actually cursed the Hornadys as being a round check at the factory at the rate of one pallet!
What was it? At only yds?! The small gusts of wind. I am only guessing the cross winds to be under 10mph and may have been a little more but the fact of the matter was that at 17grains, these wonderfully performing rounds were being thrown all over the place by the wind because of their light weight.
When using the 20 grand Rounds also by Hornady Vmax, And in that same wind condition 10 minutes later when I switched Ammo I was able to keep the hits at least on the 8 inch target at yards but beyond that, worthless. So my points or actually Mr. This can be found in the same matter using the light weight maybe 80 grain 9 mm when attempting 50 yard plus shots. I love 17 HMR for planking and they are such a flat shooting bullet up to and sometimes for me anyway.
But I just wanted to point out the fact that this one element of grain weight is something 1 should pay particular a close attention to when trying to shoot with any accuracy in windy conditions. Of course it takes more when to veer a nine or a 45 but it is not something to take lightly when choosing your weight and or versus a windy day. Much more than that as the article explains but that is my personal experience With light weights or low green count bullets. Hope this helps in some small way the way sort of piggybacked off of Mr.
Thanks for reading this long Winded explanation of my personal experience. I personally CC a Glock I do my own reloading also.
Both are identical with the exception that the HAP does not have cannulars. This gives me the best way to do so with a lower cost of not having to actually shoot all up my carry ammo.
Just something to think about. Nice intro. Mayne the firmula for kinetic energy would help illustrate the point you are trying make. My range will not be 50 yards. And I practice with Federal. This allows me to be as accurate as possible. When dealing with self-defense, penetration and having control of your back ground is critical. God forbid the day we have to use our weapons, but I will be ready to defend and protect my family.
This helps me understand more about shooting. Time limit exceeded. Leave a Comment Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. Please be respectful of others.
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