Accurately determine the size of the choke in the barrel.
Made in Brass with handy keyring.

Brass Choke Gauge Key Ring Instructions

20 Gauge
Simply push the gauge in the muzzle of the gun and when the segment fits the bore perfectly, read off the gauge the amount of choke of each barrel.

This high quality shooting accessory is essential when buying a fixed choke pre-owned gun, as the choke stamps may not correspond to the amount of choke in the bore (i.e. sometimes choke is bored out by a gun smith and they do not always re-stamp the new choke on the barrels)
As for multi choke guns, the choke stamps can wear off over time and it can be difficult to get an accurate choke reading.

Be sure by using this quality Choke Gauge.

STEEL SHOT WARNING – It is highly dangerous to use more than ½ choke when using steel shot