I have a BRNO Effect 30-06 half stock, a true BRNO 110 30-06 half stock, and a BRNO K1 Stutz 7x57R full stock.
I have wrote this in previous threads:
With the Effect, I can shoot to MOA or better with good handloads (not that picky at all, does have a set trigger) and I like it to the point of almost choosing it for a goat hunt....but for the non-rimmed cartridge.
The BRNO 110 is a better made rifle as it was from the old BRNO days. Shoots like the Effect, (does have a set trigger) but again, a non-rimmed round that may cause issues is not my choice for a remote hunt with no back up. If either of these 2 rifles were in a rimmed round, I would not hesitate to use it in a remote hunt.
The BRNO K1 Stutz full stock was MOA or slightly worse at 100m out of the box with RWS ammo.
I did my best to improve it with abundant loading and messing around with the front sling swivel screw that also holds the front barrel band. I made it a lot worse...a lot.
After lots of loads and some channel work as well as isolating the front swivel screw to try to prevent pressure on the bbl, and learning it is hard to resize rimmed brass deep enough to get the brass to seat easily to allow the closing of the action, and learning to learn to love slower speeds with heavy bullets,.....I got it back to moa or so while using sandbags and not letting the barrel to wobble while squeezing the trigger.
Factory RWS is still the best for accuracy.
The trigger is not the best - good - but no set available, so it is not the best for such a short rifle. The trigger is quite crisp, with a very little creep, but about 5 pounds.
If I had the time I would try and figure out the trigger and maybe that would be most helpful. I do love set triggers on my other BRNOs for distance shooting.
I liked the K1 enough (and being a BRNO nut) I ordered one K1 Stutz each in 9.3x74R and 6.5x57R but after a 2 year wait was advised that no one is interested in bringing them into Canada, not even on a special prepaid order basis.