2019 Grande Ronde Muzzleloaders Rendezvous Rate This Event Join us for the Grande Ronde Muzzleloaders Rendezvous on August 30 - September 2, 2019 at the La Grande Rifle & Pistol Club in La Grande, Oregon. Labor Day weekend the Grande Ronde Muzzleloaders host a three day rendezvous (early setup adds five days) with [read more]