What is the chambering for the 8339 f bolt ( kgf )?
CREATE TABLE "bolt_thrust_estimations_for_various_rifl" (
  "chambering" text,
  "p1_diameter_mm" text,
  "a_external_cm_2" text,
  "p_max_bar" real,
  "f_bolt_kgf" real,
  "f_bolt" text
);
SELECT "chambering" FROM "bolt_thrust_estimations_for_various_rifl" WHERE "f_bolt_kgf"=8339;