I recently started reloading for my AR-15 in 6.5 Grendel and am at a stand still.
Using the Redding Type S Bushing FL die and following all the stuff I've read up, I got the .288 bushing for the die (after measuring the factory brass and measuring the neck thickness .013x2 + .264 -.001 to .002 = .288
Went to the range to zero my gun and check out the once fired brass and this is where I'm stuck.
The factory ammunitions neck measures in at an average of 0.289 inches.
My once fired cases measure between 0.298 - 0.299 inches (Grendel II chamber)
Will it be too much to neck size from 0.299 to 0.288 in one step? With the one .288 bushing? Or will it be necessary to get a bushing near the middle, say a .293 and have to neck size twice. Or another option maybe?
I see on their website that there usually isn't problems with neck sizing 0.01" but that is the max they state to do. So I'm curious of your opinions.
Also, why is the neck increased to .300 in the Grendel II Chamber from .293 in the Grendel? I thought the change was getting rid of the compound throat to allow a bit longer COAL. I didn't read anywhere about or why the increase in the part of the chamber where the neck of the cartridge is. (sorry dont know all the terminology )
I know that the .288 neck would leave around .004-.005" of room so 0.002" clearance around all sides of the bullet in the Grendel chamber, but wouldn't having 0.012" of space or 0.006" clearance around the whole bullet affect accuracy and brass life if it keeps stretching the neck it 0.01" every shot.
I've also read that people that people recommend not to use the Redding type S dies for gas guns. Is there any validity to this? I have them in .308 and loved them so I just went ahead and purchased them for my grendel.
Sorry for the run on topic, but thanks in advance for helping the N00b out!
Using the Redding Type S Bushing FL die and following all the stuff I've read up, I got the .288 bushing for the die (after measuring the factory brass and measuring the neck thickness .013x2 + .264 -.001 to .002 = .288
Went to the range to zero my gun and check out the once fired brass and this is where I'm stuck.
The factory ammunitions neck measures in at an average of 0.289 inches.
My once fired cases measure between 0.298 - 0.299 inches (Grendel II chamber)
Will it be too much to neck size from 0.299 to 0.288 in one step? With the one .288 bushing? Or will it be necessary to get a bushing near the middle, say a .293 and have to neck size twice. Or another option maybe?
I see on their website that there usually isn't problems with neck sizing 0.01" but that is the max they state to do. So I'm curious of your opinions.
Also, why is the neck increased to .300 in the Grendel II Chamber from .293 in the Grendel? I thought the change was getting rid of the compound throat to allow a bit longer COAL. I didn't read anywhere about or why the increase in the part of the chamber where the neck of the cartridge is. (sorry dont know all the terminology )
I know that the .288 neck would leave around .004-.005" of room so 0.002" clearance around all sides of the bullet in the Grendel chamber, but wouldn't having 0.012" of space or 0.006" clearance around the whole bullet affect accuracy and brass life if it keeps stretching the neck it 0.01" every shot.
I've also read that people that people recommend not to use the Redding type S dies for gas guns. Is there any validity to this? I have them in .308 and loved them so I just went ahead and purchased them for my grendel.
Sorry for the run on topic, but thanks in advance for helping the N00b out!
Comment