Velocities with Powder coating?

[fiddler]

What are the maximum velocities a guy can expect with powder coating? does it leave any residue behind in your barrel?

 

[B]

You can go as fast as you would likely ever need. I have hit 2500fps with a 100grn .225 bullet. -/+2000fps is no big deal. Alloy is hard 16-18bhn but nothing special. I have read of guys hitting 3000+ but no experience up there myself. The only thing I ever got out of my barrel was carbon. As I always say, pressure is more of a concern than velocity. They typically go hand in hand so it's easy to mistake one for the other.

 

[fiddler]

You can go as fast as you would likely ever need. I have hit 2500fps with a 100grn .225 bullet. -/+2000fps is no big deal. Alloy is hard 16-18bhn but nothing special. I have read of guys hitting 3000+ but no experience up there myself. The only thing I ever got out of my barrel was carbon. As I always say, pressure is more of a concern than velocity. They typically go hand in hand so it's easy to mistake one for the other.

I only know 2 people who use powder coating, and they both shoot handgun so never really much speed over 1100-1200fps at best.

Is the friction of a 24" rifle barrel not may times greater than the friction of a 6" handgun barrel? Or is there no difference?


I'm loading for 38-55 for velocities 13-1500 fps max. But I also wondered about faster rifle loads.

 

[WereWeasel]

I only know 2 people who use powder coating, and they both shoot handgun so never really much speed over 1100-1200fps at best.

Is the friction of a 24" rifle barrel not may times greater than the friction of a 6" handgun barrel? Or is there no difference?


I'm loading for 38-55 for velocities 13-1500 fps max. But I also wondered about faster rifle loads.

I had some bad powder coats on a batch of cast a few months ago (got distracted and reversed/forgot a couple of steps in my procedure) when I melt down the bullets I pulled the powder coats out of the pot the way you would when smelting recycled jacketed bullets. I was rather impressed how tough the stuff is; I doubt you will have any issue pushing them to the close to plated speeds.

 

[slug]

About 4 years back, I averaged 2424 fps in my 30/30. Eight of 10 rounds went into 1 & 3/4 inches at 50 yards on a very overcast, rainy day. There was only normal fouling. While the group was not impressive by itself, it was pretty good for the velocity. I think that as we raise the velocity a little, we need to raise our care in bullet selection, sizing and seating a lot.

Covid and a new hip slowed down the experimenting. Hopefully, more this summer.

 

[fingers284]

I had some bad powder coats on a batch of cast a few months ago (got distracted and reversed/forgot a couple of steps in my procedure) when I melt down the bullets I pulled the powder coats out of the pot the way you would when smelting recycled jacketed bullets. I was rather impressed how tough the stuff is; I doubt you will have any issue pushing them to the close to plated speeds.

Dang' I have re-melted a lot of powder coated slugs and that coating is just carbon sludge that floats on top in my pot pretty much the instant it hits that 700 deg alloy

 

[mmcintyre1220]

Dang' I have re-melted a lot of powder coated slugs and that coating is just carbon sludge that floats on top in my pot pretty much the instant it hits that 700 deg alloy

Not everything is created equally. I have melted down a few poorly coated projectiles I have made. Some powders hold up extremely well, others just melt right off almost instantly