SEATING DEPTH
QUESTION:
It is recommended to seat monometal bullets off the rifling to prevent
pressure spiking up to dangerous levels. What is your recommendation for GS
Custom Bullets?
ANSWER:
Treat our older HP bullets as you would any other conventional bullet. The
good news is that lab testing done at
Somchem
in South Africa, showed that loading HV and FN bullets in contact with the
rifling, or off the rifling, did not make any measurable difference to speeds or
pressures. It is therefore preferable to start loading tests with HV and FN
bullets touching the rifling, if the magazine and action length will allow this.
HV and FN bullets are not as sensitive as older designs to speed variation and
tuning for group size is done primarily by varying the overall length of the
cartridge.
See the
Load
Guidelines for HV bullets for more detailed information.
GS Custom
Bullets, situated in Port Elizabeth on the East Coast of South Africa,
manufactures solid copper, turned, monolithic bullets for hunting and sport shooting. These bullets
are used by hunters on several continents, hunting from the smallest of antelope to the largest
of dangerous game, using the smooth HP bullet, as well as the more popular HV, FN and SP bullets
with the patented drive band concept. GSC bullets are configured for the highest possible ballistic
coefficients. SP bullets are mainly used for sport shooting. All GS Custom Bullets are moly coated.
