Hello.
I just wanted to post my results reloading 300 AAC Blackout with Vectan powders. I was also surprised to see that a few of my extracted cases were missing the primer! I saw no signs of overpressure or unusual noise/recoil. The speeds recorded were less than factory loads.
I am using CCI 400. Some extracted cases with low charges had rounded edges at the firing pin ident while others were flatter but still with a perfectly visible and normal indentation. What could cause primers to be ejected from the primer pocket? There was no extraction problems either.
Vectan SP3 is close to Alliant 2400 and Vectan Ba9 is close to Unique, tough neither are quite identical. SP3 is spherical and Ba9 looks like, well, Unique...
Barrel: 10.5" Starline brass. Light crimp.
Bullet: Hornady V-MAX 110gr. OAL 53mm. SP3 19gr: 2067fps (factory: 2221fps).
Bullet: PPU 139gr. OAL 54mm. SP3 18.5gr: 1939fps.
Bullet: Hornady Interlock 180gr. OAL 56.5mm. Ba9 7gr: Not enough to cycle (AR), no reading.
I was looking for a subsonic load for the Interlock bullets...
This missing primers business has gotten me worried, never seen that before, though I have never reloaded real rifle ammo before (lots of experience reloading handgun ammo).
UPDATE: After further inspection it appears that both factory (Hornady) loads and my handloads were missing primers after extraction, but most of the Hornady brass were missing the primer while only a few Starlines did. 20 out of 50 cases had missing primers.
Gil.
I just wanted to post my results reloading 300 AAC Blackout with Vectan powders. I was also surprised to see that a few of my extracted cases were missing the primer! I saw no signs of overpressure or unusual noise/recoil. The speeds recorded were less than factory loads.
I am using CCI 400. Some extracted cases with low charges had rounded edges at the firing pin ident while others were flatter but still with a perfectly visible and normal indentation. What could cause primers to be ejected from the primer pocket? There was no extraction problems either.
Vectan SP3 is close to Alliant 2400 and Vectan Ba9 is close to Unique, tough neither are quite identical. SP3 is spherical and Ba9 looks like, well, Unique...
Barrel: 10.5" Starline brass. Light crimp.
Bullet: Hornady V-MAX 110gr. OAL 53mm. SP3 19gr: 2067fps (factory: 2221fps).
Bullet: PPU 139gr. OAL 54mm. SP3 18.5gr: 1939fps.
Bullet: Hornady Interlock 180gr. OAL 56.5mm. Ba9 7gr: Not enough to cycle (AR), no reading.
I was looking for a subsonic load for the Interlock bullets...
This missing primers business has gotten me worried, never seen that before, though I have never reloaded real rifle ammo before (lots of experience reloading handgun ammo).
UPDATE: After further inspection it appears that both factory (Hornady) loads and my handloads were missing primers after extraction, but most of the Hornady brass were missing the primer while only a few Starlines did. 20 out of 50 cases had missing primers.
Gil.
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