Im shooting a 7mm WSM. I really like the H1000 as it is printing .25 to .50 @ 100 yds with 162 AMAX and almost the same with the SST's. Yesterday I shot a five shot group with H4831 thta was just under .50 at 100 yds. Some fellows at the range said I should try the H4831SC. Is there a difference? If so, why? I'm where I'm at largely due to the info I recieved on this site so your input would appreciated.