Drew a moose tag this year and would like to use my Whelen but can't seem to get consistant grouping at the range. One time I'll get a 1.5" inch group and the next three shots will be all over the paper. I'm shootingFederal TBBC. I'll take the blame for some of the problem butI'm wondering about the accuracy of the Whelen in general. Anybody got one and how accurate is it.