Thanks for the add. It is not my intention to say I know everything about accuracy with .22LR. These are my opinions based on many days of practice on the shooting range and competitions. With this information I want to give answers to a friend who was asking how to get groups smaller than .500 of an inch at a distance of 100 yards or 100 meters. I attend F-Class competitions at 100 meters very often in Spain and my equipment is as follows: Anschutz super match 1813, 66 cm barrel lenght, my riflescope is a Kahles model 1050K de 10-50x56, and I compete in the F-Class Rimfire Open modality so we use front rest and a rear support bag. This are some opinions about my experiences. It is important to have a riflescope with sufficient magnification power, why? When we place our crosshairs on the target, if there is not enough power, 40X or more, it is very difficult to accurately place the crosshairs in the center of the target due to lack of vision magnified enough to determine if we are within a few hundredths of an inch or not on the center of the target. This lack of precision of hundredths of an inch due to lack of magnification in our viewfinder causes that at 100 meters the deviation is more than half an inch. In order to get a good grouping and accuracy of less than .400 of an inch at 100 meters in addition to enough magnification of the target you also need stable ammo and a barrel tuner. I used RWS Ammo R100 345 m/s and a Cicognan brand FAT barrel tuner to get groupings under .400 of an inch. There is no doubt that knowing how to read the wind and knowing the shooting range with a lot of practice is also a necessary factor. I’m an ARMY Vet 77 year old, 101st Airborne Division.