jacketed VS Plated 9mm reloading

[BCboy]

I am just about done loading all my jacked 9mm stash , I now have a couple of thousand of Plated bullets to start on . I have been told in the past that the plated need to be loaded lighter then jacketed ? any help would be great

 

[t-star]

treat plated the same as cast- it's not a proper jacket encasing the bullet-

 

[Canuck223]

Plated bullets tend to be softer than jacketed, yet harder than cast lead of course. Your best bet is to use lead data as a starting point and use a chrony to work up.

Also, be sure to be very gentle on the crimp.

 

[saskgunowner101]

I have just throttled them back to cast bullet data and work up as well.

 

[BCboy]

I am useing 231 am seeing 3.3 for starting with a 147 ? sound about right ?

 

[legi0n]

Plated bullets behave like gas checked hard cast lead. How hard? Depends on how thick the plating is. This means you won't have to care much about matching the pressure to the lead hardness but should factor in higher-than-lead engraving resistance. (engraving happens when the rifling digs into the bullet)

So for a new reloader I recommend using jacketed data.

Jacketed bullets exhibit a higher engraving resistance and hence higher peak pressure.

Later on, once you get more experienced and are comfortable matching chronograph measured velocities to your loads, you can count on less engraving resistance for plated bullets (i.e. less peak pressure).

I have loaded thousands of plated bullets with jacketed loads and never seen any tumbling (sign of rifling peeling off the bullet instead of spinning it). If yours tumble, back off the load a bit.

 

[BCboy]

I have reloaded for quite a few years , just always used jacketed . I will start low shoot them over the chrony , Thanks for the info guys