30 gr + load for 6ppc, .269 neck any better than .262?

H

HopeToBe

Guest
Given the climate I live in (and shoot in) i normally find the best agging potential in the what I would expect to be the high end of the upper load window, meaning 30.5-31 gr of N133 (using the 2009 N133). However this has made me thinking if .269 will stand the pressure better in any way? I am not talking about brass life in general as I rarely use the after 20 firings.

But given this elevated pressures could there be an advantage to the .269?
 
The place where cases either stand up or fail, due to pressure, is at the other end, the head. Going to a thicker neck should make no difference in how a case holds up to higher pressures. Are you weighing your charges? The reason that I ask, is that although I think of myself as being proficient with a powder measure, 31 grains of 133 seems a to be a little more than I can get into a case, and still have room for a bullet. Is '09 more dense than earlier lots?
 
I find the 09 to be of the more dense compared to previous lots. I have no big problem to get 31 gr N133 down with normal procedure of a long drop tube and a slow trickle. Not much space left, but sufficient for a bullet.
 
You will find that the primer pockets will not hold a primer after using those loads. I had some fall out of the case recently. This is with fitted necks.
I am going to try to eliminate this problem by going to more clearance (.002). Maybe this lot of brass is junk. Have not had this problem to this extent previously.

GW
 
I feel like I am, in a sense, the initiator of the .269 neck in Benchrest. I can say with confidence that the ONLY advantage a thicker neck has over a thinner is ease in neck turning.......jackie
 
I just started shooting a 269 neck and shot this last match with 30 -30.5 of v133 no problems that I found as yet.

We missed you at the Bluebonnet Jackie. Hope to see you somewhere else later this year.
 
You must log in or register to reply here.
Back
Top