Can someone run QuickLoad for me?

[squirrelsnpr]

I started another post in the "gunsmithing section" about difficult extraction after firing. I am not seeing pressure signs, and have never heard of this being a possible sign of excessive pressure. I am also getting difficult extraction at lower powder charges as well. I'm headed to the range to see if .003 shoulder bump helps, but this might be a differnt post all together.

Anyways I am shooting a 22PPC with and 8 twist 24" barrel using 75 grn A-Maxs. I am getting great accuracy with the following loads:
1. 26.5 grains of Benchmark at approx 3150 FPS
2. 26 and 26.5 grains of 8208XBR at approximately 3000 and 3050 FPS.

If you have time could you run some other powders as well? What does quickload say is the "optimum" powder? I would like to see around 3100 FPS but I would like to know what the "numbers" say are realistic.
Thanks,
Mitch

 

[zullo74]

Why don't you buy your own software?

 

[Chuckhunter]

squirrelsnpr, According to Quick Load, you about 2 full grains over a safe load with Benchmark powder. The PPC case is very strong and small primers can be very difficult to read as an indicator of pressure. That hard bolt lift is telling you to back off. because of the heavy for caliber bullet and the faster twist barrel a powder like H-4895 would be a better choice. Try 25.9 Gr's. and then go up and down a few tenths and you should eliminate the hard bolt lift while still attaining a M.V. of approx. 3000 fps. Trying to reach 3100 with that combo is pushing the envelope. If you're seating into the lands, back off about a grain and work back up. Hope this helps,,,,,,,,,,,,,,,,,Chuckhunter