coyote back straps,hmmmmmmmmmmm.anyhow, yes, stay away from roundball for deer hunting UNLESS you are great shot,dont hurry,shoot close and have load accurate. its no fun chasing adeer at 5 minutes till dark on cold windy night and coyotes howling,ha. i like traditions of roundball but in real life, stay with the maxi-ball or powerbelt in flintlocks.my favorites are, 370 maxi-ball/powerbelt 295/348 in .50 cal. take care