I could have sworn I saw where you take a FMJ load and drop it by 10% to start out for Lead load. Is this correct??
How to figure FMJ to Lead for load data?
Started by
dskinsler83
, Jun 15 2012 08:37 PM
10 replies to this topic
#1
dskinsler83
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Posted 15 June 2012 - 08:37 PM
Daniel Scott Kinsler
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#2
Guy Neill
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Posted 15 June 2012 - 10:29 PM
That would work. Try to be certain the internal volume is not materially different (smaller) when the new bullet is loaded.
Guy.
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#3
OzzieF
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Posted 15 June 2012 - 11:09 PM
That works for faster powders from what I've experienced.
The slower the powder though the less the difference in load amount between fmj and lead/moly.
The slower the powder though the less the difference in load amount between fmj and lead/moly.
#4
Retread1911
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Posted 16 June 2012 - 04:04 AM
That works for faster powders from what I've experienced.
The slower the powder though the less the difference in load amount between fmj and lead/moly.
That has been my experience as well.m
Retread1911
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#5
Bshooter
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Posted 16 June 2012 - 02:59 PM
Sounds right, I load 4.1gr of VV310 with a 230gr FMJ and 3.7gr with a 230gr Lead RN. Power factor is about the same.
#6
warpspeed
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Posted 16 June 2012 - 03:32 PM
There is usually no shortage of published load data from the various powder mfgs for lead bullets. What can you not find ?
Whoever said "Keep your friends close... your enemies closer" didn't know much about optics! - Warren Moore
"Those bullets must be tired by the time they get there" - Kita
My goal in life is to be as good of a person as my dog already thinks I am. - Anon
"Those bullets must be tired by the time they get there" - Kita
My goal in life is to be as good of a person as my dog already thinks I am. - Anon
#7
dskinsler83
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Posted 16 June 2012 - 03:41 PM
All kinds of things....I have 185gr Precision Black Bullets...I have to load short OAL I have WSF, WST, International Clays, Clays, Solo 1K. Just no info
Daniel Scott Kinsler
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#8
warpspeed
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Posted 16 June 2012 - 03:59 PM
I'd probably do what you proposed in the first post.
Whoever said "Keep your friends close... your enemies closer" didn't know much about optics! - Warren Moore
"Those bullets must be tired by the time they get there" - Kita
My goal in life is to be as good of a person as my dog already thinks I am. - Anon
"Those bullets must be tired by the time they get there" - Kita
My goal in life is to be as good of a person as my dog already thinks I am. - Anon
#9
echase1
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Posted 26 June 2012 - 02:10 PM
No harm in the 10% reduction, just make sure that you are careful if you hear or see anything that would let you believe the round did not make it all of the way out of the barrel. Probably a highly unlikely scenario, but big surface areas with much friction could be an issue if the charge is too light.
#10
SoonerPast
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Posted 27 June 2012 - 07:17 AM
In 45 acp, 4.7 grains of Clay's under a 185 grain lswc, is working for me. Length is 1.245.
#11
OzzieF
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Posted 27 June 2012 - 10:02 AM
I used a 180gr Bear Creek Moly @1.135" with 5.3gr of WSF for my .40 load.
It made major in my old Glock 35 with LW barrel and made major in my 5" Infinity.
With the 185, I'd start at 4.7gr WSF@1.135" and work your way up to 5.3. Maybe increments of .2
4.7
4.9
5.1
5.3
The powder is a little reverse temp sensitive so in summer might be a bit lower than winter. Just adjust for it or shoot a hitter load in winter by about 5pf.
It made major in my old Glock 35 with LW barrel and made major in my 5" Infinity.
With the 185, I'd start at 4.7gr WSF@1.135" and work your way up to 5.3. Maybe increments of .2
4.7
4.9
5.1
5.3
The powder is a little reverse temp sensitive so in summer might be a bit lower than winter. Just adjust for it or shoot a hitter load in winter by about 5pf.
Edited by OzzieF, 27 June 2012 - 10:03 AM.
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