Yes SIZE matters but so does BHN or lead hardness otherwise there would not be all the threads, posts and debates of hard vs soft lead.
Swagged bullets are indeed softer. So use that info however one wants to,
Here on this never ending thread, post #28
If one wants to send a bullet of 5.5-6 bhn down the tube at high velocity then go for it. Maybe they are harder perhaps 8bhn? Maybe they will lead maybe not?Whatever if one wants to splatter steel plates with them so be it.
Anybody know brinell hardness of swaged bullets.....