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WESHOOT2 · April 14, 2013, 10:16 PM

What I actually do:

I find as much published data as I can (I've been collecting data since 1975).
I find the lowest START load published.
I find the highest MAX load published.
I make up start loads somewhere in the middle.

Like your example; I'd start at 5.0g, your primer and case and bullet, OAL (this is based on both the specific bullet chosen, and the specific launch platform) of 1.120--1.145".
I can't offer an exact OAL without more info on the specific bullet.

I make ten test ten. Work? Make and test twenty.
Blew up the gun? Back off your charge.
Didn't function reliably? Confirm a functioning OAL, and then work upward in .2g increments.
Change ANY component? Start over.

April 14, 2013, 10:16 PM	#8
WESHOOT2 Senior Member Join Date: February 20, 1999 Location: home on the range; Vermont (Caspian country) Posts: 14,324	what to do? fish! What I actually do: I find as much published data as I can (I've been collecting data since 1975). I find the lowest START load published. I find the highest MAX load published. I make up start loads somewhere in the middle. Like your example; I'd start at 5.0g, your primer and case and bullet, OAL (this is based on both the specific bullet chosen, and the specific launch platform) of 1.120--1.145". I can't offer an exact OAL without more info on the specific bullet. I make ten test ten. Work? Make and test twenty. Blew up the gun? Back off your charge. Didn't function reliably? Confirm a functioning OAL, and then work upward in .2g increments. Change ANY component? Start over. __________________ . "all my ammo is mostly retired factory ammo"