Duracell doesn't specify whether high-drain (capable of occasional high peak current) or low-drain (capable of only continuous low drain) on its supposed 357/303 equivalence (which is it?), nor can I find competent full specifications and tests on the products.
Response from duracell.comBy Duracell Customer Care, September 7, 2016
Thank you for taking the time to write to us. Your satisfaction with our product is important . When you have a moment, give us a call at 1-800-551-2355 (M-F 9am-6pm EST) so we can figure out what’s going on.