There is no easy answer for your question, no data I saw listed your bullet and your powder spot on. Safest is to contact Swift for their load data for your specific chambering with the powders they used to develope THEIR LOAD DATA. If you can't find published load data using the Swift A frame bullet and Alliant 22 powder I wouldn't pick a number out of the air.. The generic steves page info is what it is, I wouldn't trust a 18gr min to max charge, think about it!! William
Last edited by William T. Watts; January 22, 2013 at 11:39 AM.