The load data for the 6.5X444 Improved listed below is from me as well as a couple of other guys that shoot this same round. All load data was "safe" in our rifles and is NOT intended to be used as starting loads in any other rifle or handgun. Also, load data was from custom BARREL STUBBED rifles and were "throated" specifically for the long VLD bullets...
Here is a picture of one of the rifles....
6.5X444 Improved load data -
CASE: Remington nickel plated 444 Marlin
PRIMER: Federal B-R
POWDER: Reloader-19 / 48.2 gr.
BULLET: Hornady 140 gr. A-MAX
VELOCITY: 2,862 fps.
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CASE: Remington nickel plated 444 Marlin
PRIMER: Federal B-R
POWDER: IMR-7828 / 49.2 gr.
BULLET: Berger 140 gr. VLD
VELOCITY: 2,812 fps.
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CASE: Remington nickel plated 444 Marlin
PRIMER: Federal B-R
POWDER: AA-3100 / 50.2 gr.
BULLET: Sierra 142 gr. Match King
VELOCITY: 2,800 fps.
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CASE: Remington nickel plated 444 Marlin
PRIMER: Federal B-R
POWDER: Viht N-165 / 50.2 gr.
BULLET: Sierra 120 gr. Match King
VELOCITY: 3,000 fps.
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CASE: Remington nickel plated 444 Marlin
PRIMER: Winchester WLR
POWDER: IMR-7828 / 50.5 gr.
BULLET: Hornady 160 gr. Round Nose
VELOCITY: 2,718 fps.
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CASE: Remington nickel plated 444 Marlin
PRIMER: CCI-200
POWDER: IMR-4350 / 53.5 gr
BULLET: Sierra 100 gr. H.P.
VELOCITY: 3,429 fps.
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CASE: Remington nickel plated 444 Marlin
PRIMER: Winchester WLR
POWDER: IMR-4831 / 50.3 gr.
BULLET: Swift Scirocco 130 gr.
VELOCITY: 2,929 fps.
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I hope this helps....
A