I would believe it William.I have a 177 cal 98 and the bore is larger than my other rifles.....she loves CPLs in the box.They are larger in diameter than JSBs.FTTs in 4.52 are very good also.It might be worth it to try CPLs in the box in that rifle.Are we going to see you at the fun shoot at Tom's place in April??
Considering the conditions, with a new gun shooting open sights that's a very good start indeed. Nice rifle.Scotty