OAL varies
Quote from Reloader on July 7, 2008, 10:39 pmOk,
I have read everything I could find as well as your suggestion and finally took everything down and following intructions in the die set. I checked the position of the seating stem of which I did have it in backwards for the type bullet I was loading. I was able to reduce the deviations to within reasonable tolerances for most; -.0005 to + .0015 with a few that went as much as -.009 (I guess. I have not been able to find what the acceptable deviation is) may have been caused by deviation in the bullet itself.
Im satisfied that Im now very close and I have shot about 50 rounds with 2 FTF's.
I also set up the 9mm dies per the instructions and found similar deviations with a few going to as much as -.008.
Certainly not what I was experiencing before.
I appreciate your suggestions.
I thought I might see more discussions about OAL here since I have found several in other forums in regard to the 550. Some now even going to the Redding Competition seating die. Hmmmmm.
Thanks,
Ok,
I have read everything I could find as well as your suggestion and finally took everything down and following intructions in the die set. I checked the position of the seating stem of which I did have it in backwards for the type bullet I was loading. I was able to reduce the deviations to within reasonable tolerances for most; -.0005 to + .0015 with a few that went as much as -.009 (I guess. I have not been able to find what the acceptable deviation is) may have been caused by deviation in the bullet itself.
Im satisfied that Im now very close and I have shot about 50 rounds with 2 FTF's.
I also set up the 9mm dies per the instructions and found similar deviations with a few going to as much as -.008.
Certainly not what I was experiencing before.
I appreciate your suggestions.
I thought I might see more discussions about OAL here since I have found several in other forums in regard to the 550. Some now even going to the Redding Competition seating die. Hmmmmm.
Thanks,
Quote from Reloader on July 29, 2008, 5:13 pmI was also having OAL variances, noticed some flex in my work bench. I took the time to brace it as much as I could. I cannot see any flex in my bench now and my OALs are very consistent. I didn't think it would make a difference, but then again, we only talking about a few 1000ths of an inch. So... since I didn't see it mentioned here, make sure your workbench is stable and does not move what-so-ever.
Also, I noticed that when I get into a rhythm of turning out rounds, my OAL also improves.
Isn't reloading fun?
I was also having OAL variances, noticed some flex in my work bench. I took the time to brace it as much as I could. I cannot see any flex in my bench now and my OALs are very consistent. I didn't think it would make a difference, but then again, we only talking about a few 1000ths of an inch. So... since I didn't see it mentioned here, make sure your workbench is stable and does not move what-so-ever.
Also, I noticed that when I get into a rhythm of turning out rounds, my OAL also improves.
Isn't reloading fun?
Quote from Reloader on July 29, 2008, 5:27 pmAdjust the bullet seating die with a fired case in station 1. This ensures the toolhead is loaded upward consistantly each time. In 9mm, especially with FMJ round nose bullets, expect up to .025" variation. This variation is not in the reloader, it is in the projectile. The bullet seat stem contacts a RN bullet not at the nose, but on the ogive, or side of the bullet, at a given diameter. The seat stem then pushes the bullet from there down a given distance. The problem is that the diamater where the seat stem contacts the bullet varies in height between individual bullets, due to being made on multiple machines, all wearing differently. The small variation you are seeing won't affect accuracy or pressure.
Adjust the bullet seating die with a fired case in station 1. This ensures the toolhead is loaded upward consistantly each time. In 9mm, especially with FMJ round nose bullets, expect up to .025" variation. This variation is not in the reloader, it is in the projectile. The bullet seat stem contacts a RN bullet not at the nose, but on the ogive, or side of the bullet, at a given diameter. The seat stem then pushes the bullet from there down a given distance. The problem is that the diamater where the seat stem contacts the bullet varies in height between individual bullets, due to being made on multiple machines, all wearing differently. The small variation you are seeing won't affect accuracy or pressure.
Quote from Reloader on May 13, 2012, 5:49 pmCould it be better, with round nose bullets, to use the flat adapter? Could that increase OAL consistency?
Once OAL is properly setted for a flat nose bullet, would the OAL vary if we change to a round bullet changing the adapted to the other side?
Thank you
Could it be better, with round nose bullets, to use the flat adapter? Could that increase OAL consistency?
Once OAL is properly setted for a flat nose bullet, would the OAL vary if we change to a round bullet changing the adapted to the other side?
Thank you