just how fast with Hi-Tek coating?
- Thread starter BigBore45
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The "speed limit" is supposed to be around 2,550 FPS, but with a gas check you can drive them a bit higher. I was going to test this awhile back, but I seated my bullets too long and haven't been able to arrange a re-shoot.
Other forum members have reported success in .30-06 at and above the velocity you mention (they got 2,750 if I recall). I'll see if I can track that post down.
Other forum members have reported success in .30-06 at and above the velocity you mention (they got 2,750 if I recall). I'll see if I can track that post down.
They did. .30-06 bullets tested for the M1 Garand. And for what it's worth, Hi-Tek and powder coat are very similar. I did a test here awhile back and I intended to also test M1 loads (~2700 fps) both with and without a gas check. I plan on retesting eventually, but I'm not terribly worried they will fail.
Schwing
Member
What my experience has been is that you can drive them sky high without leading but your accuracy zone is going to be the same as with regular cast bullets.
I ran the same test with powder coated bullets with the same results. It prevented 100% of the leading but the bullets were accurate at the same velocities as before they were coated.
I have been lead to understand that gas checks can increase accuracy at higher velocities but have never tested this theory.
I ran the same test with powder coated bullets with the same results. It prevented 100% of the leading but the bullets were accurate at the same velocities as before they were coated.
I have been lead to understand that gas checks can increase accuracy at higher velocities but have never tested this theory.
oldpapps
Member
A penny's worth
Not even 2 cents but.
I do powder coating, similar to Hi-Tec, I think but not quite the same.
I have pushed my 130 grain flat base cast, sized, coated with polyester, sized again (the last time is all that is truly needed but I do it before and after), both sizings to .311, the following. This is what I have listed: [sorry but spread sheets don't copy and paste well]
Cal Bullet B-weight Powder P-weight M-Velocity weapon date of test OAL
308 Lt cut 30 130 748 45 2616.8 600 7/28/14 clear Cast, sized .311, powder coated, sized
308 Lt cut 30 130 748 45 2877.4 M1A 7/28/14 clear Cast, sized .311, powder coated, sized
30-06 Lt cut 30 130 748 44.5 2175 M1 1/24/2015 3.1255 Red Cast, sized .311, powder coated, sized FCD IHC
30-06 Lt cut 30 130 748 45 2656 03-A3 7/14/14 3.085 Red Cast, sized .311, powder coated, sized
30-06 Lt cut 30 130 2400 'O' 30 2552 03-A3 7/4/2014 3.085 Yellow Cast, sized .311, powder coated, sized
All velocities are an average of not less than 15 samples, taken at 10 feet.
My bullets are Lee 155 grain GC mold, that has been shaved to remove the gas check portion of the mold and the as cast weight with my alloy is just a hair under 130 grains.
The loading with 2400 powder gave the best accuracy. The loads fired in the M1A and Garand fully cycled. The first listing is a Remington Model 600 with a 18 1/2 inch 1 in 10 twist. The M1A has a 22 inch 1 in 11 twist. Both '06s are standard GI 22 inch barrels, the Rem 03A3 is dated from 1943 and the IHC Garand from 1953.
My experience is that pushing fast does not give me the best accuracy and the shape of the bullet's base is a large factor in accuracy. A bullet designed for use with a gas check should have one for best accuracy.
Normal disclaimers:
Safe in my weapons as I load. May NOT be safe in yours. Only trust known loading data and you don't know me or how I load, so don't. This is for information and discussion only.
Not even 2 cents but.
I do powder coating, similar to Hi-Tec, I think but not quite the same.
I have pushed my 130 grain flat base cast, sized, coated with polyester, sized again (the last time is all that is truly needed but I do it before and after), both sizings to .311, the following. This is what I have listed: [sorry but spread sheets don't copy and paste well]
Cal Bullet B-weight Powder P-weight M-Velocity weapon date of test OAL
308 Lt cut 30 130 748 45 2616.8 600 7/28/14 clear Cast, sized .311, powder coated, sized
308 Lt cut 30 130 748 45 2877.4 M1A 7/28/14 clear Cast, sized .311, powder coated, sized
30-06 Lt cut 30 130 748 44.5 2175 M1 1/24/2015 3.1255 Red Cast, sized .311, powder coated, sized FCD IHC
30-06 Lt cut 30 130 748 45 2656 03-A3 7/14/14 3.085 Red Cast, sized .311, powder coated, sized
30-06 Lt cut 30 130 2400 'O' 30 2552 03-A3 7/4/2014 3.085 Yellow Cast, sized .311, powder coated, sized
All velocities are an average of not less than 15 samples, taken at 10 feet.
My bullets are Lee 155 grain GC mold, that has been shaved to remove the gas check portion of the mold and the as cast weight with my alloy is just a hair under 130 grains.
The loading with 2400 powder gave the best accuracy. The loads fired in the M1A and Garand fully cycled. The first listing is a Remington Model 600 with a 18 1/2 inch 1 in 10 twist. The M1A has a 22 inch 1 in 11 twist. Both '06s are standard GI 22 inch barrels, the Rem 03A3 is dated from 1943 and the IHC Garand from 1953.
My experience is that pushing fast does not give me the best accuracy and the shape of the bullet's base is a large factor in accuracy. A bullet designed for use with a gas check should have one for best accuracy.
Normal disclaimers:
Safe in my weapons as I load. May NOT be safe in yours. Only trust known loading data and you don't know me or how I load, so don't. This is for information and discussion only.
moonman16
Member
BigBore45,
Go to the CAST BOOLITS FORUM,
reloading forum,
sub forum,
COATINGS AND ALTERNATIVES
There are several hundred pages about HI-TEK
and other POWDER COATINGS AND METHODS
The HI-TEK SUB FORUM HAS THE COMPANY OWNER and
the tester in AUSTRALIA and the USA now.
Good Luck, tons of info and reading.
Go to the CAST BOOLITS FORUM,
reloading forum,
sub forum,
COATINGS AND ALTERNATIVES
There are several hundred pages about HI-TEK
and other POWDER COATINGS AND METHODS
The HI-TEK SUB FORUM HAS THE COMPANY OWNER and
the tester in AUSTRALIA and the USA now.
Good Luck, tons of info and reading.
snuffy
Member
Moonman doesn't know how to do the linky thingy, so I will;
http://castboolits.gunloads.com/showthread.php?204174-simple-Hi-Tek-coating
In a couple of WEEKS, when you get done reading 6433 posts you should know a few things about hi-tek coatings. It's too labor intensive for my tastes, too many noxious chemicals that you have to keep ordering. I suppose it works, I'll never know because I powder coat, and it just plain works!
http://castboolits.gunloads.com/showthread.php?204174-simple-Hi-Tek-coating
In a couple of WEEKS, when you get done reading 6433 posts you should know a few things about hi-tek coatings. It's too labor intensive for my tastes, too many noxious chemicals that you have to keep ordering. I suppose it works, I'll never know because I powder coat, and it just plain works!
moonman16
Member
Snuffy,
THANKS!
THANKS!
I've only PCed a few cast bullets (compared to some), mebbe 1200. My "high velocity" test was in my 7.62x54r and my 30-06 Garand. I don't have a chrony so it's just a guess at around 2,600 fps. I wasn't able to recover the fired bullets, but got no excessive fouling.
I don't consider PCing overly labor intensive, but it's much more work than loading/purchasing jacketed bullets. I've dry tumbled a bunch and electrostaticly sprayed some and not been overcome by odors or vapors although over spray can be a pain. I normally use lead bullet data and methods for my handgun PCed bullets and accuracy and function is the same as with nekkid lead bullets. The trade off for clean handling and clean shooting bullets is sometimes a bit of messy powder gets spread around...
Hi-Tek is different than PCed bullets and I've only fired them to 9mm velocities (124 gr. Truncated Nose to about 1200 fps) and lower 45 ACP velocities...
I don't consider PCing overly labor intensive, but it's much more work than loading/purchasing jacketed bullets. I've dry tumbled a bunch and electrostaticly sprayed some and not been overcome by odors or vapors although over spray can be a pain. I normally use lead bullet data and methods for my handgun PCed bullets and accuracy and function is the same as with nekkid lead bullets. The trade off for clean handling and clean shooting bullets is sometimes a bit of messy powder gets spread around...
Hi-Tek is different than PCed bullets and I've only fired them to 9mm velocities (124 gr. Truncated Nose to about 1200 fps) and lower 45 ACP velocities...
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