How Much W231 to Make Power Factor of 165

February 24, 2001, 03:28 PM

Hi all. Don't have a chrono, so I must ask here. About how many grains of powder do I need to make the IDPA power factor of 165 from a 5" 1911. I am using W231 with Winchester primers and a 200g LSWC bullet. OAL is 1.255 & crimp is .469. Thanks.

Regards,
Frank

Scooter2 · February 24, 2001, 08:23 PM

It depends. W231 powder is temperature sensitive. In the summer, I'll make 170 pf with 5.5 gr., but during the winter I need to bump it up to 5.7 gr. So 5.7 should work. I load mine to 170 just to be on the safe side of the pf.

WESHOOT2 · February 24, 2001, 10:45 PM

5.7g is safe (but the ONLY way to really know is to chrono).

February 24, 2001, 10:45 PM	#3
WESHOOT2 Senior Member Join Date: February 20, 1999 Location: home on the range; Vermont (Caspian country) Posts: 13,031	5.7g is safe (but the ONLY way to really know is to chrono). __________________ . "all my ammo is mostly retired factory ammo"

February 24, 2001, 03:28 PM	#1
faiello5 Guest Posts: n/a	Hi all. Don't have a chrono, so I must ask here. About how many grains of powder do I need to make the IDPA power factor of 165 from a 5" 1911. I am using W231 with Winchester primers and a 200g LSWC bullet. OAL is 1.255 & crimp is .469. Thanks. Regards, Frank

February 24, 2001, 08:23 PM	#2
Scooter2 Senior Member Join Date: January 16, 2001 Posts: 115	It depends. W231 powder is temperature sensitive. In the summer, I'll make 170 pf with 5.5 gr., but during the winter I need to bump it up to 5.7 gr. So 5.7 should work. I load mine to 170 just to be on the safe side of the pf.