Skinnedknuckles
Member
- Joined
- Jul 3, 2011
- Messages
- 249
I want to develop a heavy .357 Magnum load using a 180 gr Hi-Tek coated bullet (instead of a gas checked hard cast bullet) for use in my Taurus Model 66 4" and my Rossi Model 92 20". I have Hodgdon H110 and magnum primers on hand and plan to order 180 gr WFN Hi-Tek coated bullets from Missouri Bullets.
Now for the problem: Hodgdon doesn't list a load for a 180g lead bullet. I am ASSUMING I should be using lead bullet load data for the coated bullets, but this is my first experience with coated bullets so I'm trying to gather as much information as possible before starting loading. I also assume that I want to use a strong roll crimp for good ignition and to avoid bullets walking out or being pushed in and the Missouri bullet has a good crimp groove.
Hodgdon lists 13.0 gr start, 13.5 gr max for a 180 Nosler Partition
Gun Loads Forum lists a 13.25 gr load for a #2 alloy lead bullet, no speed data in a rifle
CastPics lists a similar lead bullet load
I had been under the impression that the same amount of powder would generate less pressure behind a lead bullet than a jacketed bullet, but the current Hodgdon web site doesn't seem to bear that out, where I can find such comparisons. If it were another powder I would start lower than 13 gr and work up, but given how famous H110 is for not liking "under-loading", I want to be careful at both ends. I have some HSM gas checked 180 gr "Bear Load"cartridges and I'll chrony them for comparison but I'm expecting speeds in the range of 1100-1200 in the revolver and 1500 in the rifle. If anyone would be willing to share their experience, either by reply or PM, I would appreciate it.
Now for the problem: Hodgdon doesn't list a load for a 180g lead bullet. I am ASSUMING I should be using lead bullet load data for the coated bullets, but this is my first experience with coated bullets so I'm trying to gather as much information as possible before starting loading. I also assume that I want to use a strong roll crimp for good ignition and to avoid bullets walking out or being pushed in and the Missouri bullet has a good crimp groove.
Hodgdon lists 13.0 gr start, 13.5 gr max for a 180 Nosler Partition
Gun Loads Forum lists a 13.25 gr load for a #2 alloy lead bullet, no speed data in a rifle
CastPics lists a similar lead bullet load
I had been under the impression that the same amount of powder would generate less pressure behind a lead bullet than a jacketed bullet, but the current Hodgdon web site doesn't seem to bear that out, where I can find such comparisons. If it were another powder I would start lower than 13 gr and work up, but given how famous H110 is for not liking "under-loading", I want to be careful at both ends. I have some HSM gas checked 180 gr "Bear Load"cartridges and I'll chrony them for comparison but I'm expecting speeds in the range of 1100-1200 in the revolver and 1500 in the rifle. If anyone would be willing to share their experience, either by reply or PM, I would appreciate it.