A barrel with a full choke.
Modified choke with the 28" barrel.
50-100 USD
To determine the choke of a Springfield Model 67 shotgun, you can measure the constriction of the barrel at the muzzle. This is done using a choke gauge or calipers to measure the inside diameter of the barrel at the muzzle and comparing it to the diameter further back. Standard chokes include cylinder, improved cylinder, modified, improved modified, and full, each corresponding to specific constriction measurements. Additionally, you can test the patterning by firing the shotgun at a target and assessing the spread of shot to gauge the choke's effectiveness.
Most were full choke, but the only accurate to determine the choke is to measure the inside diameter of the muzzle with a caliper. www.countrygunsmith.net
A little bit more than a 17 gauge but less than 19 guage.
Yes, provided the gun does not have a full choke. Cylinder bore (no choke) shotguns are best. A full choke may cause the flare to get stuck. If the flare gets stuck in the barrel it may melt it, or at the very least dangerously weaken the metal. This may cause the barrel to fail catastrophically when you fire an actual shot round.
1957 more likely 1961
Look at the barrel for the choke marking. After the name, just before the meets the receiver, there will be one or more stars. One * means a full choke, the more stars, the more open the choke.
Either a full choke,or extra full choke shotgun barrel.
You can pretty much bet on full or modified, but the actual determination of choke is made by comparison the inside diameter of the muzzle to the inside diameter of the barrel before the bore. sales@countrygunsmith.net
Would not recommend using a full choke or even a 20 gauge, 12s are much better