Years ago, I used Ramshot Hunter and other grades. They were marked as temp stable. They may have been, but I don't think it was an outstanding capacity on their part. All temperature variability is, well, 'variable'. Ramshot page on Hodgdon page does not reference temp stability.
LRT is one of the very slowest powders, (than H1000), but it meters very well (ball powder), and I depend on charge maintenance to avoid pressure spikes. I intend to use it for my 28" 260 and 140's (140+?), and am not looking for peak velocities. I think I can build a compressed charge that is not 'peaky' enough to spike so badly.My Primary goal with the 260 is long bore life. Also, I live at 4350 ft ASL, and atmo drag is not so much of an issue (85% of Sea Level density altitude), so I get a little bonus.
I use supplemental O2 for myself. BTW; Medical folks have assured me it's OK with shooting (with smokeless) as long as I don't get really stupid about it.
Greg
PS - Hodgdon/Ramshot/Win/V-V, etc. burn rate data, etc., is available at the bottom of the Hodgdon home page under "Reference Data".
Ramshot LRT Page. O/O stock at the moment. IMHO, worth some wait.
PPS - LRT is faster than H50BMC, and slower than H-10000, or right in between V-V N568 and V-V N570.
