AusVarmint

Hello to all,

Can anybody let me know to what correspond exactly in the metric system the following sizes?

109n170
These are data supplied by Theoben for breech O-rings.

Thanks in advance for your replies.

Hello,

Is it possible, with a Laser Bore Sighter, to settle a scope by taking into account various weights of pellets?

Thanks for your answers.

Regards,
tempest