I do not use an external trigger and have no issues. Once you figure out how to aim it and where place it in relation to the muzzle they work great. I aim with an aftermarket sight that bolts to the top. I place the LR 5 - 6" from the either side of muzzle and and lined up directly with the end of barrel, forward of break blast and rear of muzzle blast. That's when shooting from the ground and LR on mini-tripod. When shooting from bench I place LR on taller tripod and shoot over the top (all sides work) of LR, no break blast with APA. MAIN thing is make sure barrel is centered up with one of the black bars off-center around edge of LB. Hope that made sense, works great for me!