Load consistency

[mherth]

Just wondering about an old topic, loading by volume or weight of powder. Which is more important in getting consistent accuracy? I use a Belding and Mull to charge pistol cases with BP and don’t weigh charges. Can the same be done for a 45-70, realizing there will be weight variation, or is weighing each charge necessary? Assuming that each charge is compressed to maintain a consistent powder column height.