Thread: Seating die damaging projectiles

Have seen it plenty of times

The 270 collet is not quite the same ogive profile as your projectile choice

Yes the compressed loads make it worse.

Some things that lessen the "crush ring" on the projectiles ogive are...

VLD chamfer the inside of your case necks for easier projectile seating

Thoroughly clean then Lube your case necks for a softer seating pressure

Lube projectiles as well for the same reason

Drop a grain of powder out or change to a faster burn rate of powder

Or seat your projectiles out longer if possible

Choose 140 NBT for more powder volume

Seat the projectile very very slowly


Just neck size your fired brass, this increases powder capacity and if you repeatedly tap a powder charged case you will see the powder level drop, then seat the projectile.

If none of those are suitable then smear bedding compound in your collet, and release agent on a projectile

Three quarters seat the projectile in a case and walk away, next day remove the part loaded round from your press.

Your seating collet will now be bedded to 150g LR Accubonds and wont damage them.

I have fired a lot of projectiles that have been damaged in the way you describe and there is no change to bc, no change to accuracy and terminal performance on game is the same.

Ps. I have only ever seen .270 hornady seater stems make this damage, and softening up the final seating pressure is the key to lessen damage