I have a tru-ball release. (not sure which model. it is similar to the newer model the stinger) I have had it for 6 years now, still in good shape. I decided to try another type so I went with scott (mongoose-similar in length to the tru-ball) after a lot of shooting and frustration with all shots going to the left. compared releases again and tru-ball is 1/2" longer. started shooting the tru-ball and grouping like a pro (well, almost...) with the mongoose 2-4" left @10yd. 4-6" @ 20yd., 10" @30 yds. a disgrace! how could a 1/2" casue that much difference in my shooting? same anchor pt., same trigger pressure. tru-ball is dual caliper and mongs. is single...
I would have to say that it is caused by the way the release lets the string go. I seen a tremendous change from my dual caliper to my single string release. Are you sure that your anchor point is the same? It would seem to me that it would be different since you are gaining 0.5 inches on the draw...what's your arrow length? FOC?
With all the different types of "hooks" now there is different pressure put on your string or d-loop. This will change your grouping. Some releases release at different times and move different ways. This is pretty normal when looking for a new release.
I'm struggling with this issue. I have two glove style releases. The older one is a low budget single hook type and the newer on in a Truefire caliper. I want to shoot the caliper, but it's a half an inch longer and throws the shot left. Guessing here, but the longer release is causing the bow arm to open at release, due to an over extension of the arm.
Im not sure on your exact model mongoose, i shoot the "lil-goose" and there is an allen head screw in the body of the release that if you undo it you can adjust the length of the release. idk if yours is as long as it can go already but check it out, you may be able to lengthen it some. hope that helps some. -Alex
An additional thought...worked this one out on the John, where all great ideas are hatched A right-handed shooter must turn his head to the right (away from the target) to accommodate the longer draw. Make a small peep with your right index finger and thumb and hold out your left index finger to act like a pin and focus on a small object. Next, roll your head slightly right until the peep you've made is no longer centered. To reacquire the target, the left (bow hand) must move to the left.
Yeah I have a little goose and and you can adjust the length same as the mongoose Sent from my iPad using Tapatalk HD
update... talked with a release expert. powerhawk _11 was the closest. with single caliper string is being pushed to the side during released, result? groups/arrows tend to go left. also if there are grip issues (grip to tight/inconsistent) a single caliper will be less forgiving... glad I went back to dual caliper.
