Air Arms Owners Club

Has anyone had one of these rifles if so have you ever tuned the rifle yourself has i would like to tune my rifle upto 12 ft lbs has with using the air arms heavies at 21 grains you only get 9 ftlbs out of the rifle so would like tune it to get closer to 12 using those pellets. Has i have my own crono so can check on the power if going to use lighter pellets sometime. So any help at been able to tune this rifle would be much appreciated thx.

Example;

No idea but bear in mind that if you achieve close to 12ftlbs with heavies you may be well over the limit with other pellets.

Just for clarity and sorry if teaching any grandma to suck eggs etc ....

Rifle set up using lighter pellets - At the same setting, Power reading will go up when you use heavier pellets even though Pellet speed will go down.

Vice versa,

Rifle set up using heavier pellets - At the same setting, Power reading will go down when you use lighter pellets even though Pellet speed will go up.

Therefore to stay legal, set up your rifle's power within legal limits using the heaviest pellet you can find on the market .... Usually Bismags. There are heavier pellets available but not freely.

Thx for the reply yes i know that about the pellet weight differences i just like to change the rifle pressure to suit the pellet has you get a better string ratio firing at 11.5 ft lbs for all the different pellets you use. That is why i bought a combro so i could do this everytime i bought different pellets to try. Anyway we can close this subject has i now know how to tune the brocock contour super 6 its a bit like you do with my air arms s200 but its alot less easier anyway guys thx for your replies see you on the next topic.

Hi raj thx for the post mate that is why i bought the crono so i could change the power to different pellets and stay at 11.5 at all times no matter what pellet i use then at least you don't suffer with less power ratio when using an heavier pellet. Everybody should invest in a crono if they know how to tune there own rifle then at least if you do use different pellet weights you can keep it at a constant. Running the pellets at the full 11.5 or 11.7 ft lbs you will get a better string and and a more stable results ratio if using a ballistic program witch intern should give you alot less drop in pressure through your 10 or 20 shot string.