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AR2201
.275 member


Reged: 31/08/05
Posts: 57
Loc: Oz
Re: Backthrust on actions
      20/10/05 09:21 PM

500Grains

Thanks for the tip on the Lilja website, I checked their article on bolt thrust as you suggested and they use internal case diameter and pressure to calculate the backward thrust generated by a cartridge onto an action.

I had thought of this but as my database only lists external head diameters I have used them in lieu and stuck to relative statements.

But, the good news is, this means we can say that the 45/70 405gn at 1850fps and the 45/90 405gn at 2050fps generate the same back thrust (same pressure same case head).

AR2201
An investment in knowledge always pays the best interest.

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Entire topic
Subject Posted by Posted on
* Backthrust on actions AR2201 18/09/05 06:06 PM
. * * Re: Backthrust on actions NitroXAdministrator   28/10/20 04:53 AM
. * * Re: Backthrust on actions crshelton   28/10/20 02:13 PM
. * * Re: Backthrust on actions NitroXAdministrator   28/10/20 03:03 PM
. * * Re: Backthrust on actions Hunter4752001   28/10/20 05:47 PM
. * * Re: Backthrust on actions NitroXAdministrator   28/10/20 06:17 PM
. * * Re: Backthrust on actions DoubleD   28/10/20 11:29 PM
. * * Re: Backthrust on actions Otto   18/09/05 10:54 PM
. * * Re: Backthrust on actions sportingrifle   20/09/05 04:54 PM
. * * Re: Backthrust on actions AR2201   20/10/05 08:28 PM
. * * Re: Backthrust on actions 500Nitro   20/10/05 08:47 PM
. * * Re: Backthrust on actions AR2201   20/10/05 10:16 PM
. * * Re: Backthrust on actions unspellable   21/09/05 02:53 AM
. * * Re: Backthrust on actions 500Nitro   18/09/05 08:47 PM
. * * Re: Backthrust on actions AR2201   18/09/05 10:17 PM
. * * Re: Backthrust on actions 500Nitro   18/09/05 10:38 PM
. * * Re: Backthrust on actions AR2201   19/09/05 01:36 AM
. * * Re: Backthrust on actions 500Nitro   19/09/05 01:57 AM
. * * Re: Backthrust on actions banzaibird   18/09/05 10:55 PM
. * * Re: Backthrust on actions bonanza   18/09/05 11:41 PM
. * * Re: Backthrust on actions DUGABOY1   19/09/05 04:55 AM
. * * Re: Backthrust on actions banzaibird   19/09/05 06:02 AM
. * * Re: Backthrust on actions Marrakai   19/09/05 10:39 AM
. * * Re: Backthrust on actions 500grains   19/09/05 01:06 PM
. * * Re: Backthrust on actions AR2201   20/10/05 09:21 PM
. * * Re: Backthrust on actions banzaibird   18/09/05 11:53 PM
. * * Re: Backthrust on actions 500Nitro   18/09/05 11:53 PM

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