Have recently had Benchmark 8208 released here in Australia. Im of the understanding its the same as IMR8208.
Anyway I got a bottle and have been trying it out in the 20 practical.
I started at 25gr of powder since I have a load with benchmark (Benchmark 2 for us) at that weight and the 8208 is slower burning. 25gr and 25.5gr were mild and accuracy was about 1/2MOA. I then loaded 26gr of powder in my 223 remington brand cases necked down to 20 cal, cci 450 primers and 39gr sierra blitzkings, and chrono'd the load to run around 3880fps in my 24" 12 twist lothar walther barrel.
Previously I was using 23.6gr of reloader 10x for around 3750fps and got pressure signs in warm weather. Also used 25gr of Benchmark which was a bit milder. But this new load shoots faster, hits harder and drops very little- plus there are no pressure signs at all- could keep going but staying with what is accurate- 1/3MOA for 3 shots which is good because I rarely get extra shots at nervous rabbits and foxes . Rabbits this afternoon were being thrown everywhere when the little green tipped pieces of fury hit them.
In my remington 223 with 8 twist krieger I usually load 26.5gr of benchmark in lapua cases and 50gr nosler BT's but I think I have enough powder for 20 or so more reloads before I work up a new one with this new powder.
I predict this summer its going to be hard to choose which one comes out shooting!
Please note all loads listed are worked up in my rifles and may not be safe in yours. Read hodgdon or ADI reload data and work up from minimum in your own rifles.
Anyway I got a bottle and have been trying it out in the 20 practical.
I started at 25gr of powder since I have a load with benchmark (Benchmark 2 for us) at that weight and the 8208 is slower burning. 25gr and 25.5gr were mild and accuracy was about 1/2MOA. I then loaded 26gr of powder in my 223 remington brand cases necked down to 20 cal, cci 450 primers and 39gr sierra blitzkings, and chrono'd the load to run around 3880fps in my 24" 12 twist lothar walther barrel.
Previously I was using 23.6gr of reloader 10x for around 3750fps and got pressure signs in warm weather. Also used 25gr of Benchmark which was a bit milder. But this new load shoots faster, hits harder and drops very little- plus there are no pressure signs at all- could keep going but staying with what is accurate- 1/3MOA for 3 shots which is good because I rarely get extra shots at nervous rabbits and foxes . Rabbits this afternoon were being thrown everywhere when the little green tipped pieces of fury hit them.
In my remington 223 with 8 twist krieger I usually load 26.5gr of benchmark in lapua cases and 50gr nosler BT's but I think I have enough powder for 20 or so more reloads before I work up a new one with this new powder.
I predict this summer its going to be hard to choose which one comes out shooting!
Please note all loads listed are worked up in my rifles and may not be safe in yours. Read hodgdon or ADI reload data and work up from minimum in your own rifles.