Q: Can the barrels of the Stevens 311 be modified to install choke tubes?

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'*' designates full choke (F). '*-' designates improved modified choke (IM). '**' designates modified choke (M). '**-' designates improved cylinder choke (IC). '**$' designates skeet (SK). '***' designates cylinder bore (CYL).

They came with modified on the right side and full on the left in the 28" and 30" barrels and imp. cyl . and modified in the 26" barrelled models from the factory, from my research, but a lot of owners had them opened up to whatever they wanted, so you have to measure them to be sure.

Yes. Rifled slugs are intended for smoothbore barrels (abot slugs aer for RIFLED barrels). Best accuracy with rifled slugs is USUALLY a modified choke, but can be safely fired thru any choke less than EXTRA full choke.

no, the improved modified is between a full choke and a modified choke check out this website http://www.wildfowlmag.com/tips_strategies/shotgun_062304/

The improvement

Modified describes a choke. Invector is a system of choke tubes.

GO TO BROWNING WEBSITE AND GET CHOKE SPECIFICATIONS FOR DIFFERENT CHOKES AND MIKE END OF BARRELL

BROWNING CHOKES AND THEIR CODES (ON REAR LEFT-SIDE OF BARREL)* designates full choke (F).*- designates improved modified choke (IM).** designates modified choke (M).**- designates improved cylinder choke (IC).**$ designates skeet (SK).*** designates cylinder bore (CYL).INV. designates barrel is threaded for Browning Invector choke tube system.INV. PLUS designates back-bored barrelsIf you have any problems trying to figure it out, call or write Browning. You can contact them on their web page at Browning.com.

BROWNING CHOKES AND THEIR CODES (ON REAR LEFT-SIDE OF BARREL)* designates full choke (F).*- designates improved modified choke (IM).** designates modified choke (M).**- designates improved cylinder choke (IC).**$ designates skeet (SK).*** designates cylinder bore (CYL).INV. designates barrel is threaded for Browning Invector choke tube system.INV. PLUS designates back-bored barrels

Perazzi shotgun choke markings are as follows the KG xxxx is the gram weight of the barrels the 18.4 being .724", 18.5 being .729" is the internal bore diameter of the barrels the circles with a dot in the are the points of choke old Europeain markings the choke with 1 dot is full, 3 dot is modified, 5 dots is cylinder. guns with choke tubes the markings go from 1 to 10. each number times .004" equals the points of choke. there fore full choke is 10 and represents .040" choke. down to 1 which is .004" improved cylinder Perazzi shotgun choke markings are as follows the KG xxxx is the gram weight of the barrels the 18.4 being .724", 18.5 being .729" is the internal bore diameter of the barrels the circles with a dot in the are the points of choke old Europeain markings the choke with 1 dot is full, 3 dot is modified, 5 dots is cylinder. guns with choke tubes the markings go from 1 to 10. each number times .004" equals the points of choke. there fore full choke is 10 and represents .040" choke. down to 1 which is .004" improved cylinder Perazzi shotgun choke markings are as follows the KG xxxx is the gram weight of the barrels the 18.4 being .724", 18.5 being .729" is the internal bore diameter of the barrels the circles with a dot in the are the points of choke old Europeain markings the choke with 1 dot is full, 3 dot is modified, 5 dots is cylinder. guns with choke tubes the markings go from 1 to 10. each number times .004" equals the points of choke. there fore full choke is 10 and represents .040" choke. down to 1 which is .004" improved cylinder Perazzi shotgun choke markings are as follows the KG xxxx is the gram weight of the barrels the 18.4 being .724", 18.5 being .729" is the internal bore diameter of the barrels the circles with a dot in the are the points of choke old Europeain markings the choke with 1 dot is full, 3 dot is modified, 5 dots is cylinder. guns with choke tubes the markings go from 1 to 10. each number times .004" equals the points of choke. there fore full choke is 10 and represents .040" choke. down to 1 which is .004" improved cylinder Perazzi shotgun choke markings are as follows the KG xxxx is the gram weight of the barrels the 18.4 being .724", 18.5 being .729" is the internal bore diameter of the barrels the circles with a dot in the are the points of choke old Europeain markings the choke with 1 dot is full, 3 dot is modified, 5 dots is cylinder. guns with choke tubes the markings go from 1 to 10. each number times .004" equals the points of choke. there fore full choke is 10 and represents .040" choke. down to 1 which is .004" improved cylinder Perazzi shotgun choke markings are as follows the KG xxxx is the gram weight of the barrels the 18.4 being .724", 18.5 being .729" is the internal bore diameter of the barrels the circles with a dot in the are the points of choke old Europeain markings the choke with 1 dot is full, 3 dot is modified, 5 dots is cylinder. guns with choke tubes the markings go from 1 to 10. each number times .004" equals the points of choke. there fore full choke is 10 and represents .040" choke. down to 1 which is .004" improved cylinder Perazzi shotgun choke markings are as follows the KG xxxx is the gram weight of the barrels the 18.4 being .724", 18.5 being .729" is the internal bore diameter of the barrels the circles with a dot in the are the points of choke old Europeain markings the choke with 1 dot is full, 3 dot is modified, 5 dots is cylinder. guns with choke tubes the markings go from 1 to 10. each number times .004" equals the points of choke. there fore full choke is 10 and represents .040" choke. down to 1 which is .004" improved cylinder

As you correctly assumed the stamping of the numbers 2 & 4 on the barrel flats designates the choke of each barrel. 2 being the designation for a modified choke and 4 for a full choke.

from smallest pattern to largest: full improved modified modified improved cylinder cylinder (no choke)

You can use steel shot with a choke anywhere from cylinder to modified, i wouldn't recommend using steel with a improved modified or a full choke.

In both the U.S. and British scale of chokes, Full choke is the tightest choke for game guns (there are some "extra tight" chokes but these are generally for other thsan game guns). The English 3/4 (three quarter) choke is equivalent to the U.S. "Improved Modified" The English 1/2 (quarter ) choke is equivant to the U.S. "modified" In other words the Mod choke is one half the tightness of a full choke and a the Improved Modified is three quarters the tightness of a full choke.

You will have to have the barrels checked by a qualified gun smith to determine what choke they really are. These guns were made by Stevens good but heavy bird guns . full and moified choke settings were standard on these guns Most people with double guns use buck shot in the full barrel and slugs in the modified barrel . If your gun is a12 gauge you can quickly determine your choke setting. take a dime if the dime will not pass the muzzle or is very tight it full choke if the dime is loose it is modified .Keep in mind use standard remmington or whinchester rifled slugs some of the higher pwerd slug can damage choked barrels RWS etc and many choked barrels do not shoot slugs very well at all .If you are hunting at ranges under 40 yard s your old gun will be fine

Stevens 107b is a fixed cylinder bore. So in other words, no choke and not able to be choked.

"Choke" refers to the amount that the barrel is constricted at the muzzle (located at the end of the shotgun barrel). The more constricted the bore opening is, the narrower and denser the pattern of shot which can be thrown. Several degrees of choke are commonly available, including full, improved-modified, modified, improved-cylinder and cylinder bore. Full choke barrels are made for long range shooting because they make the shot pattern denser at greater distances. Improved modified chokes fall between the full choke and the modified choke and are sometimes used in trapshooting. Modified chokes are midway between the full choke and the improved cylinder choke. Improved cylinder and cylinder bore or skeet chokes have little constriction and give the greatest spread (most open pattern) when shot is fired at close range. A slug may be fired through a choke so long as the slug can fit. If the choke is to small at best the choke threads will strip and at worst the barrel will split down the middle killing or maiming you. When in doubt ask the dealer.

'*' designates full choke (F). '*-' designates improved modified choke (IM). '**' designates modified choke (M). '**-' designates improved cylinder choke (IC). '**$' designates skeet (SK). '***' designates cylinder bore (CYL).

'*' designates full choke (F). '*-' designates improved modified choke (IM). '**' designates modified choke (M). '**-' designates improved cylinder choke (IC). '**$' designates skeet (SK). '***' designates cylinder bore (CYL).

Yes: A Remington 870 shotgun with a modified choke will shoot any commercial shotgun slug.

no

Yes, all Browning Invector and invector plus barrels can shoot steel shot.

* Full ** Modified *** Improved Stamped on the Barrel.