Re: Reloader 22 substitutes
First off, none of them are an equal 1 to 1 swap. That includes any existing RL22 you might find.
There are lot to lot variations that make redoing the load development essential, particularily with the line of RL powders. They have a history of wide lot to lot variations and even recalls with the RL 22 line.
Black Hills and graf also stock MRP. It is a very good powder that has not shown the temp sensitivity of the RL22.
Lot of people in the RUM are using H1000 and Retumbo, might want to look there.
No matter what you us, when you find a good lot and accurate load, buy a bunch.