Only limited working experience between the two, but I have found no considerable change. That is inside a 7mm STW with one hundred sixty gr Accubonds. Very same load and really close on velocities. IMR 7828 SSC magnum rifle powder has the exact same burn up rate as common IMR https://sperrm-l-berlin86172.isblog.net/the-imr-7828-ssc-diaries-30802339