chances are that their 10 yard pin will not be exact for you..ya need to get a bag and practice practice practice....put em where ya want em, you will see that your 10 and 20 will probably be tooo close together..so jus get out there and shoot..also....dont go shootin alot if ya dont shoot often....start with jus a few shots a day...hate fer ya to pull a muscle!!!ya might feel good, but story's i heard were sayin how it popped outta nowhere, they felt fine befor and so on..so take it real slo