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OK LETS START WITH SMOOTHING THE ACTION UP!, YOU'VE
JUST GOTTEN YOUR 870 AND YOU NOTICE THE PUMP FEELS A
BIT STIFF OR LIKE ITS BINDING LETS SAY WHEN CYCLING THE ACTION, WELL
THE
FIX FOR THIS IS TO STRAIGHTEN THE RAILS ON THE PUMP SLIDE A BIT.
CHECK FOR STRAIGHTNESS WITH A STRAIGHT EDGE AND CLEAN UP ANY FLASH ON THE RAIL GUIDES USUALLY SHARP EDGES ON THE CORNERS AND PUMP RAILS AND EDGES TOO WILL CAUSE THIS.SO HOW DO WE CHECK FOR STRAIGHTNESS? THATS THE EASY PART.
1ST GET A STEEL RULER AT THE OFFICE SUPPLY STORE OR USING A 1 FOOT ALUMINUM, CARPENTERS LEVEL, JUST LAY THE RAIL ON IT!IF THE RAIL IS A BIT BENT YOULL SEE IT WITH A GAP UNDER THE RAIL BETWEEN IT AN THE STRAIGHTEDGE,
2ND NOW TAKE THE RAIL ON THE PUMP AND PUT IT IN A VISE RIGHT AT THE
BENDS HIGH POINT AND CAREFULLY BEND IT A LITTLE BIT AT A TIME UNTILL ITS
ABSOLUTLEY STRAIGHT AND
LAYING FLAT ON THE STRAIGHT EGDE.
3RD WHEN BOTH RAILS ARE DONE NOW ITS TIME TO TAKE THE ROUGH SHARP CORNERS DOWN TO A SMOOTH FINISH,BY SAYING THIS I DONT MEAN TAKE A FILE AND ROUND THEM EITHER, JUST KNOCK THE CORNER BACK WITH SOME 600 GRIT EMERY PAPER AND ALL IS FINE.A SHARP CORNER WITH FLASH AND A SHARP EDGE WILL GRAB THE STEEL FOR THAT STICKY ROUGH FEEL WERE TRYING TO ELIMINATE HERE.
4TH NOW ITS TIME TO FIT THEM TO THE RECIEVER,THE RAILS HAVE TO GO BETWEEN
A BLOCK IN THEYRE SLOTS FIRST ON THE 870,NOW SOMETIMES THE RAILS ARE SPREAD
APART
OTHER TIMES THEYRE TOO FAR APART USUALLY PUTTING THE PRESSURE ON THE
RAIL GUIDES OR THE GUIDE BLOCK.THE WAY TO GET THEM RIGHT IS TO PUT THEM
IN THE RECIEVER AND USING A VISE AND SLIGHT PRESSURE PUSH OR PULL THEM
APART.WHEN DOING THIS THE VISE WILL HOLD THE RAIL RIGHT AT WHERE IT MEETS
THE HANDLE TUBE,USE THE HANDLE TO SLIGHTLY BEND THEM! IF DONE RIGHT YOUR
SLIDE SHOULD BE SMOOTH AS SILK BUT WERE NOT DONE YET! EITHER ,YEP THEYRE'S
MORE!
5TH TAKE A LOOK AT THE BOLT NOW ON THE LEFT SIDE THEYRE IS A CUTOUT
THAT THE EJECTOR LEAF SPRING RIDES IN, THIS CUTOUT GROOVE USUALLY NEEDS
SOME POLISHING UP TO MAKE SURE THAT IT DOESNT WEAR THE FACE ON THE EJECTER
OUT TOO FAST AND SO IT FEELS BUTTERY SMOOTH
WHEN CYCLING BACK AND FORTH TOO! WHAT I DID WAS ON MY EXPRESS MAG IN
BLACK MATTE WAS TO TAKE A SMALL FILE AND SMOOTH THOSE ROUGH MARKS
OUT ,THEN I WENT FROM 320 TO 600 GRIT EMERY PAPER WRAPPED AROUNG A
FLAT SWISS FILE AND GOT IT MIRROR FINISHED IN THE GROOVE SO IT NOW RIDES
WITH A SLICK NO BIND SURFACE.WHEN I HOLD MY ACTION STRAIGHT UP AND HIT
THE SLIDE RELEASE NOW IT WILL DROP THE PUMP DOWN TO THE OPEN POSITION ALL
THE WAY WITH NO EFFORT OTHER THAN A SLIGHT DOWNWARD MOVEMENT THE WAY IT
OUGHT TO BE .
EXPRESS MAGNUM BLACK MATTE FINISHED HEADACHES AND CURES!!!!!!!!!!!!!!!!!!!
WHEN I BOUGHT MY EXPRESS MAG WITH NYLON STOCKS AND BLACK MATTE FINISH
I FOUND THAT THEY DIDNT TAPE UP THE RIECEVER TOO WELL SO I HAD A REAL SMOOTHNESS
PROBLEM, WHAT I DID AFTER THE ABOVE RAILS TUNING WAS TO GIVE THE BORE A
GOOD CLEANING AND THE BARE ACTION
THEN TOO.AFTER THE RAIL GUIDES WERE CAREFULLY REMOVED OF FLASH AND
SHARP EDGES I THEN TOOK A DOWEL WRAPPED IN EMERY CLOTH AND PROCEEDED TO
REMOVE THE CRAP AND SOME TOOLING MARKS FROM THE INNER PART OF THE RECIEVER
WHERE THE TOP OF THE BOLT RIDES ON TO GET IT BACK TO A SMOOTHER FINISH
FOR A SLICKER FEEL AND LESS BINDING,AFTER THAT WAS DONE FINALLY DOWN TO
A 600 GRIT FINISH IT WAS NICE AND SMOOTH FOR THE BOLT TO RIDE ON GIVING
LESS DRAG AND A MORE SLICKER FEEL,THAT WAS IT.
JAMMING AND DOUBLE FEEDING CURES
ALLTHOUGH I HAVE HAD NONE OF THESE YET ALL I CAN SAY IS THESE ARE MAINLY
CAUSED BY OVERTIGHTNING OF THE BARREL TAKEDOWN NUT,AND NOT PUMPING IT HARD!
NEVER LIMPWRIST PUMP THE SHOTGUIN EASILY,THIS IS THE MAIN CAUSE OF A DOUBLE
FEED TO PUMP LIGHTLY NEVER GO PAST HAND TIGHT ON THE BARREL NUT ALSO ,IVE
SEEN PEOPLE USE A PAIR OF PLIERS TO DO THIS AND TIGHTEN THEM UP BEYOND
BELIEF,THIS IS A MAJOR MISTAKE! JUST SCREW IT DOWN HAND TIGHT THEN
ONE KLICK PAST ,THATS IT!,WHAT HAPPENS IS IT PUTS PRESSURE ON THE MAG
TUBE AND SHELL CATCHES SO THAT IT'LL DOUBLE FEED.THIS IS ALSO WHY THE LONGER
NEW STYLE SLOTTED CARRIER HAS BEEN INSTALLED ON THE NEW REM 870'S TO ALSO
HELP PREVENT THIS,IF IT DOES HAPPEN GET A GOIOD GRIP AND PUMP IT HARD AND
IT WILL CLEAR,ONE OLD TRICK FOR OLDER 870'S WAS TO CUT A SLOT IN THE CARRIER
CENTER TO PUSH THE SHELL BACK IN THE MAG TUBE,IN SOME AREAS DEPENDING STATE
BY STATE THIS CAN BE A NO NO BUT I DID AN OLDER ONE ANYWAY I HAD THAT NOW
AND THEN DID
IT.THESE ARE THE ONLY REASONS I HAVE EVER FOUND FOR AN 870 DOUBLE FEEDING,TITE
BARREL NUT AND WORN CARRIER AND NOT PUMPING IT RIGHT,THE NEW CARRIERS WILL
ALSO RETROFIT
THE OLDER 870'S TOO.
LETS TALK TRIGGERS!!!!!!!!!!!!!!!!!
OK THE NEW TRIGGER GROUPS ARE NOW MADE FROM HIGH
STRENGTH LIGHT WEIGHT SPACE AGE PLASTIC STUFF,I TEND TO LIKE THEM ALOT
BUT WHAT I HAVE MIXED FEELINGS ABOUT IS THE NEW P.C. STYLE SAFTEY LOCK
THEY GIVE YOU 2 PIN TYPE KEYS FOR,ITS GOOD FOR KIDS IN THE HOUSE RUNNING
ABOUT BUT IN THE FIELD IT CAN BE A KILLER IF YOU TWIST THE SAFTEY IN THE
HEAT OF A BATTLE IT WILL ENGAGE IN THE ON POSITION,TRY IT. THE CURE IS
SIMPLE,WHAT TO DO IS TAKE THE GROUP SAFETY OUT AND HAVE THE DETENT FOR
IT DRILLED DOWN
JUST A LITTLE DEEPER AND NO MORE.THIS WILL PREVENT THE ACCIDENTAL TWISTING
ON THE SAFTEY HEAD FROM ENGAGING IN THE ON POSITION SOMEWHAT BUT YET STILL
ALLOW YOU TO USE THE KEYS PROVIDED TO LOCK THE TRIGGER GROUP SAFLEY FROM
CHILDRENS USE.
MARCHING ,RIOT,TRENCH TRIGGERS ITS ALL THE SAME
MEANING JUST DIFFERENT WORDINGS, ON MOST 870'S THEY ARE NON RIOT TRIGGERS
MEANING YOU HAVE TO LET GO OF THE TRIGGER SO THE DISCONNECTER CAN RESET
FOR
THE NEXT SHOT WHEN PRESSURE IS APPLIED ON THE TRIGGER,IF YOU WANT TO
MAKE YOUR TRIGGER LIKE A ITHACA 37,MODEL 12 OR 1897 WINCHESTER WHERE YOU
CAN HOLD THE TRIGGER DOWN AND CLEAR THE ALLEY AS IT WERE YOULL NEED TO
CALL TIMNEY TRIGGERS OR VISIT THEYRE SITE ONLINE AND ASK FOR THE DISCONNECTER
KIT OR JUST BUT THE WHOLE NEW GROUP USUALLY THE KITS
FOR THE NEW DISCONNECT IS 95$ AND THE NEW GROUP IS 200$ BUT WELL WORTH
THE INVESTMENT IF YOUR A L.E.O. OR A HEAVILY INVOLVED TRAP SHOOTER OR JUST
ANOTHER DUCK + BIRD HUNTER LIKE ME AND WANT THAT SECOND FAST SHOT,KEEP
IN MIND THO THAT FOR 200$ YOU MIGHT BE ABLE TO GET A USED SHOTGUN WITH
ONE INSTALLED ON IT AS THE SHOTGUNS I MENTIONED ABOVE CAME FACTORY
STOCK WITH THEM! ALSO LOOK AT THE USED M+P OR POLICE DUTY 870'S AS
SOMETIMES THEY WERE ISSUED WITH THEM TOO AND JUST CAUSE THEYRE PARKERIZED
AND USUALLY HAVE A SLUG BARREL DOESNT MEAN THAT THEY CAN BE BLUED OVER
THE PARKERIZING AND A LONGER BARREL INSTALLED TOO BY SIMPLY TAKING THE
OLD ONE OFF!
STOCKS AND DRESS UP KITS AND TIPS
A LARGE VARIETY OF STOCKS ARE AVAILABLE FOR THE 870 WEATHER YOUR INTO
CIRCASSION WALNUT OR NYLON UTILITARIAN HEAVY DUTY STUFF SO LETS START HERE,
I LIKE THE NYLON ONES MYSELF ON MY EXPRESS MAG, THEY SERVE THE FUNCTION
FOR ME BEING DURABLE UNBREAKABLE UNAFFECTED BY WEATHER,HEAT OR RAIN OR
SNOW AS IM A BIT HARD ON A SHOTGUN AS I HUNT IN PRETTY ROCKY AND THICK
TERRAIN WHERE I WOULD SCREAM IF I SCRATCHED UP A NICE WALNUT STOCK.
ADVANTAGES?
THEYRE LIGHT, TUFF AND DONT CRACK OR BREAK LIKE WOOD DOES.STYLES: THEY
CAN BE HAD IN CRUISER PLAIN PISTOL GRIP,PISTOL GRIPPED FULL STOCK,PISTOL
GRIPPED SIDE OR OVER THE TOP FOLDER MAKING IT LIGHTER AND HANDIER FULLFILLING
CRUISER OR CLOSE QAURTERS
DUTY FOR YOU SERVICE MEN TYPES OUT THEYRE.
DISADVANTAGES AND TIPS,RECOIL REDUCTION
TO SAVE YOUR CHEEKBONE I SUGGEST TAPING ON A PIECE OF NEOPRENE TUBING
SLIT DOWN THE SIDE ON THOSE FOLDER TYPES,ITS THIN AND WORKS OK.FULL SIZE
STOCK SETUPS IN NYLON LIKE MINE YES THEY ARE LIGHT AND A DAYS SLUG SHOOTING
CAN BE HARD ON THE SHOULDER SO WHAT YOU CAN DO IS TAKE SOME SPRAY FOAM
IN A CAN AND PLACE LEAD SHOT AND CAREFULLY FILL IT TO BALANCE OUT THE SHOTGUN
AND THE HEAVIER WEIGHT CAN ALSO CUT BACK THE RECOIL FROM HEAVY MAG LOADS
IN BUCK OR SLUG OR JUST HOT SHOT LOADS FOR DUCKS MAKING IT MORE PLEASANT
TO PEPPER THE SILHUOETTES OR TARGETS WITH OVER THE COURSE OF ADAY.I ALSO
SUGGEST A GOOD RECOIL PAD TOO SUCH AS A PACHYMYER OR A DECELLERATTOR
WITH A MERCURY TUBE IN THE STOCK.ALSO NOW THEYRE IS REDUCED POWER LOADED
00 AND SLUGS AVAILABLE ON THE MARKET TODAY.
CHOKE ,TUBES ,COMPENSATORS,WHATS,WHYS,WHEREFORE'S AND HOWCOMES
OK ON THE CHOKE TUBES NOWADAYS WE HAVE MANY SIZES TO CHOOSE FROM, FOR
SLUG SHOOTERS I HIGHLY RECOMMEND THE 4 INCH COMPED,RIFLED CHOKE TUBE, I
HAVE FOUND AT THE RANGE THE ONLY DIFFERENCE BETWEEN ONE SETUP SMOOTHBORE
AND A RIFLED SLUG
BARREL IS ABOUT AN INCH OR SO AT 100 YARDS WITH A PROPERLY SCOPED SETUP
ON AN 870,SOME WILL ARGUE ALL DAY ITS BETTER BUT TO EACH THEYRE OWN, I
PROVED IT TO 3
PEOPLE ON PAPER AS WELL ON THAT ONE HOLDING 3 INCH GROUPS FROM A MOD.
CHOKED 26 INCH TUBE AND SABOTED SLUGS.WHATEVER YOU DO NEVER USE A CHOKE
OVER MODIFIED FOR SLUG
SHOOTING, THATS THE MAX ON IT FOR CHOKING A SLUG DOWN.NEVER SHOOT
A SLUG THRU A FULL CHOKE PERIOD NO MATTER WHAT ANYONE TELLS YOU! ALSO FOR
YOU PEOPLE WHO USE POLYCHOKES
ADJUSTABLE WITH OR WITH OUT THE COMPENSATERS OR CUTTS TUBED COMPENSATERS
REMEMBER TO USE THE IMPROVED CYLINDER CHOKES,WHY? LETS JUST SAY I'VE HAD
TO RETREIVE MINE FROM 20 FEET OUT BEFORE BECAUSE I FORGOT TO CHANGE THE
TUBE ON THE CUTTS OR OPEN UP THE CHOKE ON THE POLYCHOKE IN WHICH CASE I
HAD TO GO HOME AND RE-SILVER HARD SOLDER IT BACK ON AGAIN.NEVER SHOOT SABOTED
SLUGS THRU A CUTTS COMPENSATED CAGE TUBE,SOLID SLUGS LIKE PUNKIN BALLS
OR BRENNEKES OK,SABOTS NO WAY !!!! IF YOU HAVE A SET NON TUBED CHOKE THATS
SHOOTING OFF,WHAT I SUGGEST IS RECROWN THE MUZZLE USING VALVE GRINDING
COMPOUND AND A
STEEL BALL BEARING WITH OIL SUCH AS A MOUSE BALL WITHOUT THE RUBBER
SHEATH BY HAND CHECKING OFTEN TO SEE THAT THE ANGLE CUT IS EVEN ALL AROUND
THE BORE,IT TAKES TEN MINUTES AND WILL PUT YOUR SHOT PATTERNS AND SLUGS
WHERE THEY OUGHT TO BE.
SCOPES MOUNTS AND THE 870!
SOME HAVE HAD PROBLEMS WITH THEYRE 870S HOLDING ZERO AND SWEAR BY THE
FULL SHROUD 2 PIECE MOUNT OR THE LOWER SITTING DRILL AND TAP ON TOP OF
THE RECIEVER METHOD,MYSELF I USE A WEAVER SEE THRU MOUNT THAT SITS ON ONE
SIDE AND LEAVES IT AT THAT.IT MOUNTS WITH 2 SCREWS AND NUTS THRU THE TRIGGER
PINS REPLACING THEM.NOW TO HOLD IT AT
ZERO FOLLOW THE STEPS BELOW.
1ST TAKE SOME DOUBLE SIDED TAPE AND MAKE A PIECE TO FIT BETWEEN THE
MOUNT AND RECIEVER,ALSO NEVER OVERTIGHTEN THE NUTS AS IT WILL PINCH THE
RECIEVER TOGETHER MAKING IT AND YOUR HARD WORK TO GET IT SMOOTH A WASTED
EFFORT! THE TAPE ACTS AS A NON
SLIP AID AND A SCUFF PROTECTOR BEWTEEN THE TWO .USE LOCTITE ON THE
NUTS TO KEEP THEM FROM WORKING LOOSE WITH REPEATED USAGE,BLUE LOCTITE THREAD
SEALANT IS YOUR FRIEND!
2ND NOW TAKE THE SCOPE OFF THE RINGS AND LAP THE INSIDE RING SURFACE WITH 120 GRIT EMERY PAPER SO THE SCOPE WILL NOT SLIP ON THE RINGS FROM RECOIL AND WHEN INSTALLING THE THE LOCKDOWN SCREWS USE LOCTITE ON THEM SO THEY CANNOT LOOSEN AND CAUSE SLIPPAGE ON THE SCOPE ITSELF OR ON THE MOUNT RAIL.
3RD NOW COLLIMATE AND SITE THAT SCOPE IN, AND THEN FINE TUNE IT AT THE RANGE,YOU HAVE ABOUT AN HOUR TO DO THIS AFTER THE SCREWS HAVE BEEN LOCTITED TO MAKE ANY CHANGE ON THE SCOPES POSITION NOW AS THE LOCTITE WILL TAKE ITS TIME SETTING,WAIT A DAY OR TWO TO ACTUALLY GO SHOOTING SO YOU KNOW ITS CURED WELL ON THE THREADS
EXTENDED MAG TUBES...
YES THEY MAKE THEM ALLRIGHT SO YOU NOW CAN HAVE A 11 SHOOTER 12GAUGE!,BUT
FIRST YOU HAVE TO MODIFY YOUR MAG TUBE THIS WAY, THERE ARE 2 DETENT BUMPS
ON THE END OF THE TUBE THAT HAVE TO BE CAREFULLY DREMELED OUT SO YOUR MAG
FOLLOWER CAN GO FREELY THRU WITH THE LONGER SPRING INCLUDED INTO THE NEXT
TUBE EXTENSION THATS SCREWED ON AND ALSO IT ACTS AS A BARREL NUT TOO,THATS
IT FOR THE MODS TO BE DONE,JUST MAKE SURE THEYRE NO BURRS OR PARTS OF THE
DETENT LEFT STICKING DOWN IN SO IT CAN FREELY RIDE THRU WITHOUT HANGING
UP.THATS ALL THEYRE IS TO IT AND REMEMBER,NEVER OVERTIGHTEN THE TUBE EXTENSION
AS ITS ALSO A BARREL NUT AND CAN CAUSE HEADACHES IF TOO TIGHT AS EXPLAINED
ABOVE!
