Chap yes I had read rw's.
Below is some test made useing the 4759 with the old (in the metal cans) and the new (in the plastic jars) I had posted this on Dougs forum back when I did it.You should be able to do a search and find it there.A lot of the shooters are useing the new lot in the plastic jars and are haveing good results with groups.I am going to be useing it pretty soon because I am going to be out of the old soon,shouldn't be a problem have to match the load to the rifle anyhow.
The first chart is compareing the old that I had done before on a chrony and the new which was done on a pact.
The second is compareing the xtp (3 shot groups) with sst,s (only one shot per load)
You can also see some speeds useing the 4198,have shot up to 70 grs useing it.
Have shot up to 72 grs of 10x have gotten some really good groups but these loads will rattle your teeth.( And shatter lense in a scope)