AA#9 Squibs in 45 Colt cases

[BLUEDOT37]

Confirmed load using WLP vs CCI300

OK, I’m now sitting down to eat my full plate of crow.

I defiantly believe you and T (gaijin) are on to something with the CCI 300 and the 250 gr. cast bullets with #9.

Jeff

Thanks for the update! I recently bought some WLP's (panic purchase) when I saw they actually had some primers on the shelf at the LGS & remembered I had plenty of regular large primers but not many for magnum use. If I load up some of the "problem childs" using the WLPs, instead of the CCI 300s before you, I'll post my results. I didn't mention it before, but all my shooting with this load was done either inside or outside when it was warm.

UPDATE: Okay, finally got to the range to try this "problem child" load using WLPs instead of CCI 300s, everything else is the same: 45 Colt S-L cases, AA#9 @ 18.5grs., 255gr. cast LSWC, heavy roll crimp (in crimp groove), OAL @ 1.605", & Winchester Large Pistol Primer (Std/Mag), ~1175-1200fps, ~22K CUP, VMD @ 63%, ~68F indoor range, shot in 7.5" bbl. Ruger SRH 454.

I loaded (25), all with individually weighed powder. All shot normally with no ignition irregularities or hangfires. There was minimal blackening on the case sides. A few cases had a scant amount of unburnt powder visible, but nothing noteworthy for his level of load.

So, like "gaijin" previously stated/found, the WLPs smoothed out this load. I think if I use this powder/bullet combo again, I'll up it to 19.0 - 19.5grs. (20.5grs would up the load VMD to 70%).

 

[mtgianni]

Glad it is working for you.