You are wanting to know what load the factory uses? Not likely. Large manufacturers use canister powders not available to you and I (for the most part). They develop loads for a specific batch of powder, primers, cases, bullets. Each lot is custom developed independantly. To say Remchester 9mm 124 gr JHP is loaded with 4.6 gr of powder X is not realistic. "Powder X" is actually "Powder X, Lot 123ABC from supplier B-43". You have no way of knowing exactly what this powder is.