Mould identification

creosote

Well-Known Member
I searched a little and found nothing.
Hoping there are no dumb questions, I'm going to ask one.
What does the HV mean after the regular mould identification number mean? Lyman mould.

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I know "U" is Undersize.
 
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STIHL

Well-Known Member
I have often wondered that. Interesting, I always thought it was there way of doing a lot number.
 

Joshua

Taco Aficionado/Salish Sea Pirate/Part-Time Dragon
Actually you are all wrong. In this case the HV stands for “High Velocity”. You can easily run that 535 grain bullet up to 3500 FPS. You can’t do that with a standard 457132, it’s got to be marked HV or they won’t go that fast! Try it, it will be fun!
 

waco

Springfield, Oregon
Actually you are all wrong. In this case the HV stands for “High Velocity”. You can easily run that 535 grain bullet up to 3500 FPS. You can’t do that with a standard 457132, it’s got to be marked HV or they won’t go that fast! Try it, it will be fun!
You just gotta have 1:12 twist or slower or you’ll over spin it.
 

fiver

Well-Known Member
where's Walter?
i need video proof of the 3500, one chrono reading will be enough,,,,, but i am easy to please.
others will probably wanna see 5-5 shot groups.
 

Brad

Benevolent Overlord and site owner
Staff member
HV stands for “haunted vents”. That mould will always have multiple flaws due to poor fill out,
Best results will be had by adding 2% tin. Lyman #2 is also an option. Load them over 4895 with some Dacron and keep them under 1800 fps.

Or just buy the mould, see how it casts, and learn how to frickin cast and shoot.
 
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