When Lil'Gun first came out, it attacted my attention because Hodgdon's data showed it producing the same or better velocities than H-110 with pressures several thousand psi lower in the .357 Magnum cartridge with Hornady 158 gr XTP JHPs. Also, some gun writers started publishing loads that showed even higher velocities (but no pressure testing).
When I bought QuickLOAD, I tried comparing Lil'Gun with H-110/WW-296, but they look almost the same in the results. Instead of seeing slightly greater charges produce similar velocities at substantially lower pressures, I am seeing about the same velocities and pressures at the same charge weights.
I can get about 40 fps more velocity with Lil'Gun than H-110 at the same pressure, but that requires a 0.2 grain LOWER powder charge for Lil'Gun than for H-110. Hodgdon's data seems to indicate more than a grain LARGER charges for Lil'Gun than H-110, and substantially lower pressures for about the same velocities.
For reference:
Hodgdon manual:
SO, is there something wrong with Hodgdon's data, or is Lil'Gun not represented adequately with the approximations used in QuickLOAD?
Unclenick, can you ask Hartmut about this?
SL1
When I bought QuickLOAD, I tried comparing Lil'Gun with H-110/WW-296, but they look almost the same in the results. Instead of seeing slightly greater charges produce similar velocities at substantially lower pressures, I am seeing about the same velocities and pressures at the same charge weights.
I can get about 40 fps more velocity with Lil'Gun than H-110 at the same pressure, but that requires a 0.2 grain LOWER powder charge for Lil'Gun than for H-110. Hodgdon's data seems to indicate more than a grain LARGER charges for Lil'Gun than H-110, and substantially lower pressures for about the same velocities.
For reference:
Hodgdon manual:
Code:
H-110 15.0 gr = 1418 fps, 28,600 CUP
16.7 gr = 1591 fps, 40,700 CUP
Lil'Gun 16.0 gr = 1504 fps, 24,000 CUP
18.0 gr = 1577 fps, 25,800 CUP
Unclenick, can you ask Hartmut about this?
SL1