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

Brian Pfleuger · August 10, 2012, 05:28 PM

Here's the link:

http://www.varmintal.com/atune.htm

The "3 trips" thing, VarmintAl said "4 or more" in regards to the barrel so I was using 3 as an example if the receiver is included, it would almost certainly be more.

I had a FileMaker based calculator my uncle made running at one point using Chris Long's equation. As I recall, most normal rifle barrel length are in the 6-7 region but that's going off memory. I'll have to ask him to put that program where I can get to it again so I can run the numbers.

Edit:

Got the program again, looks like my memory is faulty (again), here are the nodes around 25 milliseconds,

August 10, 2012, 05:28 PM	#19
Brian Pfleuger Moderator Emeritus Join Date: June 25, 2008 Location: Austin, CO Posts: 19,578	Here's the link: http://www.varmintal.com/atune.htm The "3 trips" thing, VarmintAl said "4 or more" in regards to the barrel so I was using 3 as an example if the receiver is included, it would almost certainly be more. I had a FileMaker based calculator my uncle made running at one point using Chris Long's equation. As I recall, most normal rifle barrel length are in the 6-7 region but that's going off memory. I'll have to ask him to put that program where I can get to it again so I can run the numbers. Edit: Got the program again, looks like my memory is faulty (again), here are the nodes around 25 milliseconds, Last edited by Brian Pfleuger; August 10, 2012 at 05:55 PM.