Lyman 358439 vs 358429 HP

[curioushooter]

I understand that these were two different hollowpoint profiles. One that expands generously at lower velocities (358439), even 38 Special velocities, while the 358429HP is a smaller cavity (so the bullets cast up a bit heavier) and presumably is more moderate expanding and deeper penetrating.

What is unclear to me are the actual dimensions of the cavities.

I was going to send off a double cavity 358429 that I have to Erik for a hollow point conversion. I intend to use this with both 38 Special (6.0 grains of PowerPistol) and 357 Mag at normal mid-range to warm loads (basically 13-14 grains of 2400). I am having trouble deciding if I want to just go with the 439 on both or if one pin should be a 429HP or even a cup point for more controlled expansion.

Has anyone ever compared cup points to the standard flat point with the same alloy?

Thanks in advance.

[beagle]

I have several of each and this is my take on it. Both as they came from the factory have HP pins measuring .156" in diameter. Both shoot or less identically. I shoot mine in a variety of .38s and .357s. I use the factory configuration in a Model 15 Smith, two Ruger Blackhawks and occasionally a Colt Python. Does well in these guns. I also have a Marlin M1894 .357 and I thought the cavity was a little much for the enhanced velocities so I made a HP pin measuring .125" and it does well in the carbine at .357 Velocities with the bullet seated to the edge of the driving band. In .38 cases, I use the factory configuration at lower velocities in the carbine. Just my take on it./beagle