Powder selection

ReloaderClark · July 27, 2015, 12:10 AM

I load for an Improved .348 Winchester. Two powders that are listed in the manuals are IMR 4320 and Win. 760. I have a lot of H Leverevolution. On the Relative Burn Rate chart, Leverevolution is almost midway between 4320 and W760. None of the manuals list loads for the HLVR. Hornady replied that they could not recommend a load. Hodgdon never answers my emails. Any suggestions as to how I can determine a safe starting load with the H-LVR?

Marco Califo · July 27, 2015, 12:30 AM

Hodgdon replied:
"Don't do it."

Select your caliber, either of the two bullet weights, and Hodgdon powders. View the result and note that Hodgdon identifies 7 of their powders for that caliber, and Leverevolution is not one of them.
If the maker of a powder does not offer loading data using your powder and caliber, then don't do it. Get one of the 7 H-powders that are good for it.

http://www.hodgdonreloading.com/data/rifle

You cannot use relative burn rates to determine if a powder and caliber are compatible. Further, you CANNOT extrapolate load date from relative burn rates. There are many more variables operating (pressure curves, loading density, burn temp, volume of expanding gases, etc.). You can only determine safe loads by researching, and using, only published loads.

July 27, 2015, 12:10 AM	#1
ReloaderClark Junior Member Join Date: July 23, 2015 Posts: 2	Don't wanna blow up my Winchester! I load for an Improved .348 Winchester. Two powders that are listed in the manuals are IMR 4320 and Win. 760. I have a lot of H Leverevolution. On the Relative Burn Rate chart, Leverevolution is almost midway between 4320 and W760. None of the manuals list loads for the HLVR. Hornady replied that they could not recommend a load. Hodgdon never answers my emails. Any suggestions as to how I can determine a safe starting load with the H-LVR? Last edited by ReloaderClark; July 28, 2015 at 12:15 AM. Reason: Needs a more interesting title

July 27, 2015, 12:30 AM	#2
Marco Califo Senior Member Join Date: April 4, 2011 Location: LA (Greater Los Angeles Area) Posts: 2,598	Hodgdon replied. Hodgdon replied: "Don't do it." Select your caliber, either of the two bullet weights, and Hodgdon powders. View the result and note that Hodgdon identifies 7 of their powders for that caliber, and Leverevolution is not one of them. If the maker of a powder does not offer loading data using your powder and caliber, then don't do it. Get one of the 7 H-powders that are good for it. http://www.hodgdonreloading.com/data/rifle You cannot use relative burn rates to determine if a powder and caliber are compatible. Further, you CANNOT extrapolate load date from relative burn rates. There are many more variables operating (pressure curves, loading density, burn temp, volume of expanding gases, etc.). You can only determine safe loads by researching, and using, only published loads. __________________ ............ Last edited by Marco Califo; July 27, 2015 at 08:16 PM.