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A T T E N T I O N
Please do not be one of
those hand loaders who is going to search through this information just
to find the stated "MAXIMUM" load and start with that.
There is much more to
determining your maximum load than just how much powder you can dump in
the case.
Temperature, bullet type,
bullet weight, bullet seating depth, barrel twist, grove diameter,
chamber throat profile. These are just a few of the variables that can
affect velocity and pressure.
In our never-ending search for
high velocity, anyone can overload a cartridge to achieve "BRAGGING
RIGHTS".
In doing so however, you risk
damaging your rifle, endangering yourself and those around you.
The following information will
assist you in working up an accurate, high velocity load for your rifle
in a safe and prudent manner.
A good set of reloading dies, a
quality set of calipers, an accurate powder scale and a reliable
chronograph are some of the items you will need.
Begin by firing the first shot
with the starting load and record seating depth and velocity.
Increase the powder charge no
more than 1 grain at a time. If you experience ANY ONE of the
following signs of pressure, reduce your powder charge by 10% and
consider that your maximum load. Never exceed the maximum
load stated in the following chart regardless of whether or not any
pressure signs are apparent.
| 1. |
If
you begin to see pressure signs on the primer such as flattening
or "cratering" around the firing pin dent. |
| 2. |
If
enough brass flows into the ejector pin hole on the bolt face so
as to cause a shiny spot or dent when the cartridge is ejected. |
| 3. |
When
ejecting the fired cartridge, the bolt is sticky or hard to
lift.
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Maximum Case Length |
2.050" |
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Trim-To Length |
2.030" |
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Primer Used |
FED 210 |
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Primer Size |
Large Rifle |
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RCBS Shell Holder |
#4 |
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Jacketed Bullets Used |
Nosler Ballistic Tip 55GR, Nosler
Ballistic Tip 70GR
Nosler Partition 85GR, Nosler Partition 100GR
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Firearm Used: |
Pressure Test Rifle |
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Barrel Length: |
24" |
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Twist: |
10" |
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Groove Diameter: |
.243"
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| 55
Grain Nosler Ballistic Tip 2.680 O.A.L. @ 70ºF |
POWDER
TYPE |
SUGGESTED
STARTING GRAINS |
ABSOLUTE
MAXIMUM
LOAD IN GRAINS |
VELOCITY
IN F.P.S. |
PRESSURE
IN P.S.I. |
Hodgdon
Varget |
50GR |
55GR |
4206 |
65,700 |
Hodgdon
H4350 Extreme |
55GR |
60GR |
4094 |
63,500 |
Alliant
Reloader 15 |
48GR |
53GR |
4186 |
64,200 |
Accurate
Arms
4350 |
54GR |
59GR |
4132 |
64,300 |
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| 70
Grain Nosler Ballistic Tip 2.680 O.A.L. @ 70ºF |
POWDER
TYPE |
SUGGESTED
STARTING GRAINS |
ABSOLUTE
MAXIMUM
LOAD IN GRAINS |
VELOCITY
IN F.P.S. |
PRESSURE
IN P.S.I. |
Hodgdon
Varget |
44GR |
49GR |
3806 |
65,800 |
Hodgdon
H4350 Extreme |
51GR |
56GR |
3781 |
65,200 |
Alliant
Reloader 15 |
43GR |
48GR |
3735 |
63,200 |
Alliant
Reloader 19 |
55GR |
59.5GR |
3823 |
65,700 |
Accurate
Arms
4350 |
50GR |
55GR |
3784 |
65,400 |
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| 85
Grain Nosler Partition 2.680 O.A.L. @ 70ºF |
POWDER
TYPE |
SUGGESTED
STARTING GRAINS |
ABSOLUTE
MAXIMUM
LOAD IN GRAINS |
VELOCITY
IN F.P.S. |
PRESSURE
IN P.S.I. |
Hodgdon
Varget |
41GR |
46GR |
3460 |
65,800 |
Hodgdon
H4350 Extreme |
49GR |
54GR |
3522 |
66,000 |
Alliant
Reloader 15 |
40GR |
45GR |
3438 |
65,200 |
Alliant
Reloader 19 |
51GR |
56GR |
3544 |
64,800 |
Accurate
Arms
4350 |
48GR |
53GR |
3516 |
65,800 |
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| 100
Grain Nosler Partition 2.680 O.A.L. @ 70ºF |
POWDER
TYPE |
SUGGESTED
STARTING GRAINS |
ABSOLUTE
MAXIMUM
LOAD IN GRAINS |
VELOCITY
IN F.P.S. |
PRESSURE
IN P.S.I. |
Hodgdon
H4350 Extreme |
46GR |
51GR |
3269 |
66,200 |
Accurate
Arms
4350 |
45GR |
50GR |
3262 |
65,600 |
Alliant
Reloader 19 |
48GR |
53GR |
3298 |
65,300 |
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Your rifle may have a different
barrel length, groove diameter or twist rate than used for the rifles
manufactured by Lazzeroni Arms Company.
Under no circumstances
should you exceed the maximum powder charges stated in these
specifications.
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