Base cavity on hpbt palma projectiles

[fgregorio]

Hi, I am currently researching on the effects on accuracy of having a cavity on the face of the base of the projectile.
What are your thoughts and mostly, what is your experience with this concept?

Thank you for your time.

Fernando

 

[Wilbur]

I don't have any experience at all with bullets that have a cavity in the base. I do have extensive experience with bullets that do not have a cavity and can see no reason to change. This experience that I have is exclusively target shooting so if there's another reason to have a cavity then....have a cavity. I don't think that said cavity will make the bullet more accurate.

 

[MilGunsmith]

The cavity on the FMJ Lapuas is so that when the bullet is squeezed in the bore, the lead has a place to go without coming into the base profle. A HPBT has room inside the jacket for the lead to move without coming out of the point. The old M118 173gr FMJ match bullets showed this problem in tight bores.

 

[Dusty Stevens]

Like was said on the other thread its been done, and is currently being done. Dont think its helping and could be hurting.