Some rifles need to be broken in and some don't. It will not hurt to try the rifle out this weekend with the Powerbelts and see how it shoots. 100 grains should shoot real good with it. If the rifle seems not to shoot well, there are a couple things to do or try.

Take some cotton balls and push them through the barrel of the rifle. Then hold the barrel up looking through it and see how many fibers the barrel has caught and held. If the barrel looks fuzzy, it might well need breaking in. You can do this with some J-B Bore Paste, shoot some conicals through it, shoot some roundball through it, or just shoot it smooth with other projectiles. The Bore Paste is an easy way to smooth them out and make the barrel nice and clean.

All too often, people want to run off and lapp or fire lapp their new barrels. Some of the older barrels did need to be shot smooth YEARS AGO. I do not think that is the case as much any more. Go out and shoot the rifle with the powerbelts and have some fun. It will probably shoot just fine.