That's the lowest pressure Red Dot load I've seen. Hercules always used set a lower limit of 7,000 psi on their loads, reasoning that cold weather would take anything lower out of the pressure range for complete and reliable combustion. I don't believe they were wrong to set that limit.
Jim Legg is a fan of Nitro 100 for low pressure loads and reports good results. I might try that route.
2-Piper says if you can't shoot 7,000 PSI loads in it, just hang it on the wall and I find merit in that recommendation also.
