Quote:
Originally Posted by acrashb
No, he is using your criteria to compare 22-250 to 45-90, demonstrating that your criteria are either inadequate or incomplete
Gatehouse said:
Exactly.
And I thnk that everyone that isn't a 10mm Zealot can understand that.
Your comparing watermelons to wallnuts here???
Please explain how this is a RELAVANT comparison??? For us newbs? take it slow and explain it step by step?
What is the sectional density of 22-250 bullet? .199(Speer #13)
What is the sectional density of 45-90?(uses 45-70) .272( Speer # 13)
What is sectional density of 230 Gr 45 ACp? .162(Speer #13)
What is the sectional density of 200 gr 10mm auto? .179 (Speer #13)
As you can plainly see....10mm has a greater sectional density than 45 ACP...yet 22-250 is a little on the light side when compared with the 45-90...
so I still think your comparison is GARBAGE?
Definition...Ballistics 101.(or measurebating as RICK coined)
Sectional density (SD) is the numerical result of a calculation that compares a bullet's weight to its diameter. To calculate a bullet's sectional density divide the bullet's weight (in pounds) by its diameter (in inches), squared. The higher the SD number the better the SD, and the heavier a bullet is in proportion to its diameter.
SD is important because it has a significant effect on penetration. Other things being equal (like impact velocity, bullet design and material, etc.) the higher the SD number, the better the bullet's penetration. In other words, a skinny bullet of a given weight tends to penetrate better than a fat bullet of the same weight, because it concentrates the same force on a smaller area of the target. For example, if other factors are equal, a 150 grain .270 bullet will penetrate better than a 150 grain .35 caliber bullet.
Penetration is important because the bullet must get well inside an animal to disrupt the functioning of its vital organs. A bullet that fails to penetrate the fur, skin, muscle, and bone necessary to reach the vital organs is very unlikely to bring an animal down.
SD stays the same for all bullets of the same weight in the same caliber--shape does not affect SD. This information is important to remember when comparing rifle bullets.
Next time you try a comparison...try and make sure
YOUR lesser caliber has a greater sectional density...which is the case when you compare 45 acp to 10mm....
A
FAIRER comparison would be....the 340 Weatherby(SD .313) to the 45-90(SD .272)....because the Weatherby has GREATER section density than the 45-90.
Do we have to debate these 2???
Factory 10mm vs Factory 45 ACP
FASTER, FLATTER, MORE ENERGY, MORE PENETRATION, GREATER SECTIONAL DENSITY etc etc etc....
Now please tell me what is missing or imcomplete...what more do you need to know???
...SOUNDS LIKE we have a WINNER TO ME.
