That will be awesome, thank you for doing this. I just got six pounds in, and looking very forward to this powder. I am a bit concerned it may be my only six pounds now that PV has entirely delisted it. That seems very odd to me, as well.I have powder model loads loaded up for GRT. Hope to shoot them tomorrow and get the data to Gordon.
I was hoping this would fall around LVR/CFE223 burn rates/pressures. There's a ton of cartridges I shoot that would be "optimal" in that range, but I hate the temperature sensitivity of those two powders, and RL16 is just a tad too slow with the case volume available. Based on Alliant's load data, I would have expected this to be a touch slower than Varget, not so close to RL15. That's really unfortunate.I shot the powder model loads yesterday and uploaded the data to GRT. Since RL-15.5 falls between 15 and 16, I used the Reloder 15 powder model as a base for loads in 257AI and 308 Win. What I saw in the chrono results were about a 23 fps increase in velocity over the prediction for Reloder 15. While this this isnt huge in speed I also saw single digit SD in the 257 loads and low double digit SD in 308mwhich was running heavy neck tension. While I dont know this to be fact, it makes me wonder if Bofors took Reloder 15, added decoppering agent and temp control coating which slow the burn slightly resulting in Reloder 15.5. I suspect this will be a very good powder for the creedmoors. My next step is to load it in my 250AI and find max pressure.
Mine is scheduled to be here as well today, must be the Helena drop off day, if it does show today, I'll load up some 6.5cm's with 120 SGD's and 129 Interbonds and see how it performs this weekend. The other load I'm planning on trying is for the 120gr NBT's from a 7mm-08.Well done Seabeeken.Mine comes today so I can get into the game and offer some loads too.
It’s faster than reloader 16 and slower than 15. It’s not “better” but it may be better for some cartridges. What are you reloading?Mine made it here.
I wonder if it is any better than Re 16?
I can't find Re16 so I don't know so those with some Re16 please let us know if TS15.5 is any better than 16