Nobel Sport 688 Primer Question
 

The Alliant Reloader's Guide lists the following 20ga. Recipe at 1155 fps at approximately 8600 psi:

2 3/4" Remington Plastic (STS), 3/4 oz shot, Cheddite Primer, CB1075-20 wad, 12.4 grains of Green Dot.

Would substituting Nobel Sport 688 primers result in significantly higher pressures?

I am asking becuase there is little information available on NS primers, and Alliant Tech Support has not returned my phone call.

Thank you for your consideration.

Pressure could be close but the NS primers should come in slightly lower. Nobel should approximate the Winchester primer.

NS Primers
 

Thanks Mike. Appreciate it.