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renaissance7697 · June 9, 2005, 12:42 PM

RUS5924 ( & Others )

Not sure I understand how:

A Different powder
causes
The POI to shift either Left or Right from the that of a different powder.

I can understand Higher or Lower (Velocity) ....but Left or Right ??

I have heard this before in discussion about loading for Cowboy action with fixed sights.....
i.e.....changes in velocity cause POI to shift left or right
( as well as up or down )

I can see where lower velocity causes bullet to remain in the barrel longer {while it is rising due to recoil}, thereby causing a rise in POI.

But Left or Right ?????

[ Could it have something to do with Gyroscopic action ??
The rising Barrel's impulse on the spinning bullet ?? ]

June 9, 2005, 12:42 PM	#13
renaissance7697 Senior Member Join Date: January 14, 2001 Location: Alexandria, VA Posts: 203	POI shifting Left or Righ with change in Powder RUS5924 ( & Others ) Not sure I understand how: A Different powder causes The POI to shift either Left or Right from the that of a different powder. I can understand Higher or Lower (Velocity) ....but Left or Right ?? I have heard this before in discussion about loading for Cowboy action with fixed sights..... i.e.....changes in velocity cause POI to shift left or right ( as well as up or down ) I can see where lower velocity causes bullet to remain in the barrel longer {while it is rising due to recoil}, thereby causing a rise in POI. But Left or Right ????? [ Could it have something to do with Gyroscopic action ?? The rising Barrel's impulse on the spinning bullet ?? ] __________________ An Armed Society, Is a Polite Society.