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05-18-2009, 01:53 AM
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Member
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Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 727
Likes: 1
Liked 133 Times in 93 Posts
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Quote:
Originally posted by OCD1:
Quote:
Originally posted by Steve C:
Generally I've found a 20% reduction of a jacketed load gives a good start point for a lead bullet of the same weight and a load at 10% reduction or the start load for a jacketed bullet usually achieves the same velocity with lead as the jacketed bullets maximum velocity.
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What I'm saying is that a start load or 10% reduction off a jacketed load should be considered maximum for lead. Therefore the start load for a lead bullet would be another 10% reduction off that maximum which is a 20% reduction from the jacketed data.
Sorry I am a bit lost on that??
I understand the start load of jacketed achieves about the max velocity of jacketed with lead.
Is your 20% reduction of the maximum jacketed value??
I am only looking for mild target loads for 40 sw. So if my load data for 180gr fmj is 4.1. gr start would I use this also for 180 gr lfn.?
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