hand load question - Page 2

Lost Sheep · March 11, 2009, 02:53 AM

If you can shoot a group over a chronograph you could rule out velocity differences as a cause of the vertical stringing.

Barrel bedding or temperature changes would likely be more uniform in order, but you stated the spacing was random.

Primer seating might cause different burn rates (not too likely) Bullet seating depth would cause pressure variations, as would an inconsistent crimp or varying bullet weights. All would show up as velocity variations.

Good luck

Lost Sheep

James R. Burke · March 13, 2009, 07:29 PM

Yup they are right with the screws. I lock tight everything. Just dont use the wrong lock tight or you wont get them apart.

March 11, 2009, 02:53 AM	#26
Lost Sheep Senior Member Join Date: January 24, 2009 Location: Anchorage Alaska Posts: 3,341	Bullet speed If you can shoot a group over a chronograph you could rule out velocity differences as a cause of the vertical stringing. Barrel bedding or temperature changes would likely be more uniform in order, but you stated the spacing was random. Primer seating might cause different burn rates (not too likely) Bullet seating depth would cause pressure variations, as would an inconsistent crimp or varying bullet weights. All would show up as velocity variations. Good luck Lost Sheep

March 13, 2009, 07:29 PM	#27
James R. Burke Senior Member Join Date: January 3, 2009 Location: U.P. of Mich/Quinnesec Posts: 1,897	Yup they are right with the screws. I lock tight everything. Just dont use the wrong lock tight or you wont get them apart.