22cal. marauder barrel change or not

[11william]

I have a 22cal. Marauder that has a LW barrel on it. My groups are not as thght as I would like at 50.
I am thinking of trying a hammer forged barrel from M.M.
The LW will shoot jsb 14.3 the best. I get 4 to 8 flyers out of 20 shots.
Mayde I am expecting to much??
I have a reg. In the gun also. That did help alot.
I am not sure if would be worth trying..
What do you expect's thinks. I will try to add group photo.
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This is typically what I get.
Lubing helps also.
The crown looks good also.I even polished the crown and choke with jb bore paste. Did not change
Anything.