I just found my Parker Hale 303 to be lacking in too many area's. When I packed one the only load I could obtain was factory Super X 180gr silver tip. Later on I tried the 180gr Federal load and the results were just as dismal. I found it didn't have the knock down power at close or longer ranges. Compared to other rounds the trajectory drop was unacceptable and hitting animals with a good shot just to have them stand there then run off like nothing ever happened doesn't inspire confidence of any kind. I never lost an animal but follow up shots was the common theme . My experiences as a young man really soured me on the cartridge, Perhaps other have used it with different result. I think it is a lousy round for large heavy game. But hey that's just one mans opinion..