I have yet to discover a real explanation for the (enter number here) round would not feed right.
I am tho - at risk of a butt kicking from Eric

- more and more of the opinion that after some use with grease lube on slide, the slide velocity can be marginally slowed - this happened to my 226 SIG. Thus I only use Militech1 for slide/frame lube - or even Mobil1 would do.
Thing is I will disassemble, clean and lube even more often so this does not prejudice my gun - but IMO it does aid function - grease goes on all the other recommended points.
As for grip - well for sure the pup does punish a bit and perhaps some tennis ball squeezing excercizes would not go amiss. That said, I think grip has to be pretty soggy before limp wristing is a problem. Thing is while we all (hopefully) have two hands - grip methods, strength and hand sizes do vary a lot. Hard therefore to really assess without seeing.
I regularly wish anyone with problems could join me at the range for a diagnostic session - which is not to say I am expert on the R9 - but I sure am intrigued sometimes when I read of problems and want to get my hands on the troublesome gun!
I doubt I have had a chance to say welcome yet - welcome
