357 factory loads - Page 3 - Graybeard Outdoors
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post #21 of 22 (permalink) Old 03-05-2017, 08:12 AM
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Originally Posted by Jim Stacy View Post
I like the ballistics by the inch site , very interesting. Also interesting to see that the velocity from the 16" barrel is slightly higher than from the 18" barrel ?
That's true for the majority of pistol rounds but can be overcome with some powder/bullet combos. The .22 LR also does better in shorter rifle barrels.
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post #22 of 22 (permalink) Old 03-05-2017, 05:23 PM
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Originally Posted by Jim Stacy View Post
I like the ballistics by the inch site , very interesting. Also interesting to see that the velocity from the 16" barrel is slightly higher than from the 18" barrel ?
That is called friction. Once the force of acceleration of expanded gas is exceeded by friction, the bullet will slow down. You will also notice that with most pistol calibers u quit getting significant velocity gaines after 12". Wished they had the resources to do testing with rifle calibers so we could see the results there, we do know it will be longer length for sure.
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