Plated bullet velocity

[regulate34]

So doing some reading about plated bullets.
I find it’s recommended to stay below 1250fps for thin plated and 1500 for thicker plated bullets.

I am just dipping my toes into loading for a 45colt rilfe
It’s a 45Colt/410 survivor so a little out of the norm.
Not sure how you want to measure barrel length as the chamber is cut long for 410 shells and the choke at the end is removed for 45 colt shots.
The rifled portion of the barrel is 14” anyway.

I have 250g campro copper plated bullets and did a few test loads of 20.0g IMR 4227
From what I see I’m my manuals and online this should put me in the 1200fps range.
(No I don’t have a Crony)

Just shot 5 rounds. Recoil was super soft. Felt less then a 410 for sure
The primer looks like it’s at very low pressure.

I did not crimp the round. Because I have read then I will damage the copper plating. And being a single shot I’m not concerned with set back issues.

Now I’ve also read lots of reports of guys running plates bullets into the 1500-1600fps range claiming no issues.

Looking for opinions and advice.

Pics coming

 

[regulate34]

 

[emerson]

I did in my Ranch Hand. 26gr H110 under a 250 Campro. YMMV.

 

[regulate34]

I did in my Ranch Hand. 26gr H110 under a 250 Campro. YMMV.

Right on. How’s the accuracy?
Acording to published data. You should be 1500fps area

I guess I load in .5g increments tomorrow and see where I see pressure signs?

Never loaded pistol cartridges or stright wall . But I would assume the pressure signs are the same ?

 

[sevoman]

I load campro 121 grain bullets in a 38 super that go about 1400fps with no problem.Very accurate.Campros seem to have a thick jacket so handle higher velocities.I didnt have much luck with berry bullets which have thinner jackets and i think were stripping in the barrel as the accuracy was terrible.Ive also used campros at max load in 357 magnum and 44 magnum with good results.

 

[B]

I load 27.5 H110 under the Campro 250 for my Super Redhack Toklat. It runs a little under 1400fps from the 5" barrel. I have loaded Campro's 110 .308 FCP bullet to 2100+fps in an M1 Carbine. They use the same thickness for all their plated bullets except the 148 HBWC.

I wouldn't worry about too much velocity, you need to ensure your crimps don't compromise the plating to the point it fails during firing. Berry's has said they only place a limit because of customers often overcrimping.

Your gun presents some interesting loading issues. I would stick to faster powders to avoid massive velocity spreads and adjust expectations accordingly.

 

[regulate34]

I load 27.5 H110 under the Campro 250 for my Super Redhack Toklat. It runs a little under 1400fps from the 5" barrel. I have loaded Campro's 110 .308 FCP bullet to 2100+fps in an M1 Carbine. They use the same thickness for all their plated bullets except the 148 HBWC.

I wouldn't worry about too much velocity, you need to ensure your crimps don't compromise the plating to the point it fails during firing. Berry's has said they only place a limit because of customers often overcrimping.

Your gun presents some interesting loading issues. I would stick to faster powders to avoid massive velocity spreads and adjust expectations accordingly.

So do you think I should still be crimping in a single shot?

Accuracy I know is not going to be super awesome.
If I can consistently hit my 8” gong at 50yrds with the factory bead sight I’ll be happy.

One day I want to get a Henry in 45lc.
But budget and availability has me starting here.

 

[B]

I wouldn't bother crimping much more than you need to to take off any flare and ensure sufficient bullet grip.

 

[regulate34]

I wouldn't bother crimping much more than you need to to take off any flare and ensure sufficient bullet grip.

Ok right on. I’ll play around tonight when the kiddo is sleeping.
Im hoping to drill and tap the reciver and plunk one of my red dots on it. To actually gauge some accuracy
The 5 test rounds hit a 12” plate at 30ish yards no problem with just a bead up front.
Guess it’s just a magnum 410 slug in my set up. Hhah
I don’t crimp my 30-30 either because it’s a single.

 

[emerson]

Right on. How’s the accuracy?
Acording to published data. You should be 1500fps area

I guess I load in .5g increments tomorrow and see where I see pressure signs?

Never loaded pistol cartridges or stright wall . But I would assume the pressure signs are the same ?

It was reasonable. I don’t remember any problems. I just looked for flattened primers. None at that level. Crimped them too.

 

[emerson]

I wouldn't bother crimping much more than you need to to take off any flare and ensure sufficient bullet grip.

The same for me. I only crimped because of recoil in a repeater.

 

[B]

Ok right on. I’ll play around tonight when the kiddo is sleeping.
Im hoping to drill and tap the reciver and plunk one of my red dots on it. To actually gauge some accuracy
The 5 test rounds hit a 12” plate at 30ish yards no problem with just a bead up front.
Guess it’s just a magnum 410 slug in my set up. Hhah
I don’t crimp my 30-30 either because it’s a single.

A light crimp almost never hurts. It may aid ignition depending on what powder you go with. You will probably be fine either way, it could be something to try when/if you try to tighten up accuracy.

 

[regulate34]

Well I got out with my Henry big boy 45colt
Did some 5 shot groups at 85 paced yrds (rangefinder battery was dead)
Was pretty windy but oh well.

Loads were
250g campro .452 plated
Federal case
Imr 4227
Campro LP
1.600” COL
23.0g-26.5g in .5g increments
Medium crimp

I had the odd flyer not sure if it was me or the gusty head wind?
Have a 4moa red dot on it. So not the best for testing accuracy might put a scope on it next outing

No velocity readings yet but got a Crono in the mail.

All groups were in the 4-6” range using a front rest
Best loads were in the 23.5-24.5g range. Which is plenty for a steel banger load
Even 26.5g had no pressure signs but recoil was getting stiff feeling after 40 rounds.

Here is the best group @ 24.0g


Here is the brass 23.0g left up to 26.5g far right