06-10-2020, 08:49 AM
Quickload says, using a 123SST you'll get an extra 125fps for the extra 10K lbs. You might need to choose a faster powder to be able to get enough in for the extra 10K and not exceed 103% which is when it starts to get seriously compressed.
There will be some guys here who are already loading above 52K lbs and either don't know it, or have an idea but think it's worth it.
There will be some guys here who are already loading above 52K lbs and either don't know it, or have an idea but think it's worth it.