Sp Pyd, are you talking finding the right brand of the 17 grain V-Max load from different manufacturers?
Yes, that is exactly what I am saying, at the time I bought my Marlin there were only 9 different brands available, the Remington's worked in my gun the others were all a bit off in comparison, but still accurate enough to hunt with.
I kept reading posts about how most .17 ammo is the same anyways, but my gun would never see it that way. I logged all my groups after a good cleaning and my results were consistent each time, some worked good, others worked great.
I have never tried the 20 grain stuff, some guys claim it works great, I just settled once I found one my gun likes.
It can be such an accurate round it can get boring for paper stuff, I shoot at my 100 yard range and put paint balls on golf tee's.
I chalk a lot of it's performance up to my cleaning, after a range trip or hunt that uses more than a few rounds I use a bore snake, but never thoroughly clean, same with my .22's, avoids that whole "fowling shot" thing that drives me crazy. Bore snake is used with a bore guide of course.
It is one of my favorite go to guns, much quieter than it's .22 Mag counterpart, and again, less prone to ricochet. Significantly more accurate than a .22 (unless using match grade ammo, which is costly too).
A .22's miss can always be blamed on the ammo, if you are shooting a .17HMR any mistakes are likely to be the fault of the guy behind the rifle.
I also shoot a Ruger .204, for the
exact reasons I like the .17HMR, only on a larger scale.