The Firing Line Forums - View Single Post - Question about the "Shockwave" and short barrels

tpcollins · August 7, 2012, 04:19 PM

Thanks Brian, I'm not sure how to determine that chart? I subtracted a cartridge length since I was measureing the distance only the bullet has to travel. I would think an odd number of passes would put the shockwave at the muzzle and an even number near the breech.

And I realize that the bullet to the muzzle time would actually be less than the overall exit velocity but I was just trying to use some known basic data and see how much I had to tweak the bullet speed to alter the number of shockwave passes.

After some testing all year, I've found some good loads for my .204 and .223. Now I might play with the OAL to see if I can improve those even more. Thanks.

August 7, 2012, 04:19 PM	#3
tpcollins Senior Member Join Date: February 18, 2009 Location: SE Michigan Posts: 558	Thanks Brian, I'm not sure how to determine that chart? I subtracted a cartridge length since I was measureing the distance only the bullet has to travel. I would think an odd number of passes would put the shockwave at the muzzle and an even number near the breech. And I realize that the bullet to the muzzle time would actually be less than the overall exit velocity but I was just trying to use some known basic data and see how much I had to tweak the bullet speed to alter the number of shockwave passes. After some testing all year, I've found some good loads for my .204 and .223. Now I might play with the OAL to see if I can improve those even more. Thanks. __________________ What direction did that last shot at Kennedy come from? Last edited by tpcollins; August 7, 2012 at 06:28 PM.