Ramshot Magnum is what used to be sold under the name "Big Boy". It's burn rate is a little slower than H1000 and little faster than Reloder 25. It's a good powder for the larger magnums .30 cal and up, but it also works very well for the 7STW. Found it not to work too well in Remingtons Big 7 regardless of bullet/charge weight. I use it quite often in my 300WM though and it's great. Good luck.