I have loaded on SDB, 550 and now I have a Mark 7 equiped 1050 which has saved my shoulder (sucks getting old). Do not regret your 1050 purchase.
The one problem (if you can call it that) is you will be able to load more. Which will cost you more in components. Pick up a FA vibra prime or the Dillon and a dozen primer tubes. Spend a few minutes loading the tubes and an hour loading then the rest of the evening with the family.
woof