Gentlepersons,
I'm looking for some help with Casull charges. Specifically with a 340gn bullet that has two crimp groves. I currently have a couple loads with 2400 and H110 that are around 1100 fps and shoot well. These loads have an OAL of 1.750 and are crimped in the lower groove. I am having some rounds on occasion that jump the groove and jam the cylinder so I'd like to crimp on the upper groove. This will put the bullet 1/10" deeper in the case. Any suggestions as to what amount I should back the charges off to stay safe? I've looked as best I can to find 340gn load data but all of the data I can find is for the longer OAL. The charges I'm currently using are 2400 - 21.0 and H110 - 23.5 + 25.0.
Any help would be greatly appreciated
I'm looking for some help with Casull charges. Specifically with a 340gn bullet that has two crimp groves. I currently have a couple loads with 2400 and H110 that are around 1100 fps and shoot well. These loads have an OAL of 1.750 and are crimped in the lower groove. I am having some rounds on occasion that jump the groove and jam the cylinder so I'd like to crimp on the upper groove. This will put the bullet 1/10" deeper in the case. Any suggestions as to what amount I should back the charges off to stay safe? I've looked as best I can to find 340gn load data but all of the data I can find is for the longer OAL. The charges I'm currently using are 2400 - 21.0 and H110 - 23.5 + 25.0.
Any help would be greatly appreciated