Thread: SECTIONAL DENSITY

Basically the heavier a bullet is for its caliber the higher the SD will be. So a 140gr .264 cal bullet will have a higher SD than a 140gr .284 cal bullet.

As mentioned above, generally the higher SD bullet is more likely to penetrate further, however the construction and how frangible the bullet is also plays a part on how much it will expand and penetrate.

This is why many favour 6.5mm and 7mm calibers, as they sit in a nice sweet spot of quite high SD's and BC's for their bullet weights.

Originally Posted by GWH

Basically the heavier a bullet is for its caliber the higher the SD will be. So a 140gr .264 cal bullet will have a higher SD than a 140gr .284 cal bullet.

As mentioned above, generally the higher SD bullet is more likely to penetrate further, however the construction and how frangible the bullet is also plays a part on how much it will expand and penetrate.

This is why many favour 6.5mm and 7mm calibers, as they sit in a nice sweet spot of quite high SD's and BC's for their bullet weights.

Hey @GWH, thank you for the reply, the "S/D" i am talking about is "Sectional Density" and not "Standard Deviation"…

Cheers man!

Mac

Originally Posted by PERRISCICABA

Hey @GWH, thank you for the reply, the "S/D" i am talking about is "Sectional Density" and not "Standard Deviation"…

Cheers man!

Mac

Yep realize that 😉

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