The Firing Line Forums - View Single Post - Didja notice Accurate Arms load data changed? A lot?

armoredman · June 5, 2011, 09:32 PM

My downloaded load data sheet from last year to this year is a dramatic difference, especially in the cast loads section for 9mm. I was using 7.6 grains of #7 for a 124grain cast bullet load in the Phantom, and 6.4 grains #7 in the P-01. The cast data I had said the low load was actually below the minimum, and the higher was in the mid range of OK.
The new data put 6.4 at the upper range of OK, and my 7.6 are over a full grain too high, plus P cast loads. I snorted...until I checked primers, and found a number that were quite flat. Hmm, never noticed that before.
I contacted AA, and they said they went to a new type of pressure checking, and reformulated load data.
Soooo...to make a long story short, check your data, see if things have changed at Camp de Accurate Arms for your load. Just an FYI for anyone who might not have noticed.

June 5, 2011, 09:32 PM	#1
armoredman Senior Member Join Date: May 22, 2007 Location: Arizona Posts: 5,299	Didja notice Accurate Arms load data changed? A lot? My downloaded load data sheet from last year to this year is a dramatic difference, especially in the cast loads section for 9mm. I was using 7.6 grains of #7 for a 124grain cast bullet load in the Phantom, and 6.4 grains #7 in the P-01. The cast data I had said the low load was actually below the minimum, and the higher was in the mid range of OK. The new data put 6.4 at the upper range of OK, and my 7.6 are over a full grain too high, plus P cast loads. I snorted...until I checked primers, and found a number that were quite flat. Hmm, never noticed that before. I contacted AA, and they said they went to a new type of pressure checking, and reformulated load data. Soooo...to make a long story short, check your data, see if things have changed at Camp de Accurate Arms for your load. Just an FYI for anyone who might not have noticed.