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sculls711 · May 5, 2013, 02:37 PM

I am new to reloading and have some very, very basic questions. I hope someone on this forum has the patience to help. So, here goes.

I am loading .40 S&W 180gr. using Accurate #7. If I go to the Speer handbook, it calls for a start charge of 8.6gr, not to exceed 9.4 gr. However, the accurate data page calls for a start charge of 7.7 gr. not to exceed 8.5 gr. I would think that the Accurate page would me more...acccurate, but I wonder why there is such a discrepancy in the data. Any thoughts?

Also, I am puzzled by another, what I consider, strange set of data. All of the following are using AA#7 powder. For a 180 gr. bullet, AA calls for a starting load of 7.7 gr. For a 165 gr. bullet, it calls for a starting charge of 8.4 gr. And for a 155 gr. bullet, it calls for a starting charge of 8.4 gr. So, you need a larger charge to push a lighter bullet? Just seems wrong to me. What am I missing? I would love to get educated.

Thanks for the help.

May 5, 2013, 02:37 PM	#1
sculls711 Junior Member Join Date: February 19, 2013 Posts: 2	newbie help I am new to reloading and have some very, very basic questions. I hope someone on this forum has the patience to help. So, here goes. I am loading .40 S&W 180gr. using Accurate #7. If I go to the Speer handbook, it calls for a start charge of 8.6gr, not to exceed 9.4 gr. However, the accurate data page calls for a start charge of 7.7 gr. not to exceed 8.5 gr. I would think that the Accurate page would me more...acccurate, but I wonder why there is such a discrepancy in the data. Any thoughts? Also, I am puzzled by another, what I consider, strange set of data. All of the following are using AA#7 powder. For a 180 gr. bullet, AA calls for a starting load of 7.7 gr. For a 165 gr. bullet, it calls for a starting charge of 8.4 gr. And for a 155 gr. bullet, it calls for a starting charge of 8.4 gr. So, you need a larger charge to push a lighter bullet? Just seems wrong to me. What am I missing? I would love to get educated. Thanks for the help.