In the case of me putting the Stihl bar on the 346xp it had nothing to do with weight. 74 year old fellow I call my dad (not my real dad, the logger, but the man who has been more of a father to me) gave me about 50 68 link .325x.063” chains. None of them had ever been sharpened., just used till dull. I didn’t have a Stihl at the time, and wanted to be able to use the chains, so modified a bar off of a MS250 to fit the husky. If I remember correctly the adjuster hole matched up, but I had to lengthen the slot, and drill an oil hole.
Either way, that bars been on my other 346xp for about 3 years, but it won’t run in the cold for whatever reason, so I swapped it onto this older but much less used 346xp for my test today.
Pretty sure up till I sharpened these 2 chains today, I’ve been running the first one of those chains I started using from the ones he gave me. These are gonna last a long time