I like the golden bullets, I buy them over other bulk pack .22's. Most of my .22's feed and fire it just fine, my savage MKII shoots them very well, all 5 of my 10-22's like it, but my Marlin 60 sometimes has trouble feeding and ejecting while my 2 Marlin 795's have no problem. I think the hollow point on the GB's is a little better on small game than the federal bulk pack. When we go rabbit hunting the GB's get a lot more one shot kills than the Fed bulk HP's. The Fed would still kill rabbits just fine, but ofthen it would take one shot to anchor them down and another to finish them off.
Thunderbolts, I bought some on a end of year clearance, and they sucked! like others have already said, some sound quite a bit louder than others, and dirty dirty. They functioned fine im my Beretta U-22, so I shot them all out of that and a single shot rifle.