1022 assembly
parts check
- before starting the build make sure you have everything!
barrel to receiver
- assumptions:
- barrel is "drop-in" i.e. not requiring fitting with adding or subtracting material from barrel or receiver
- parts/tools involved:
- barrel
- v-block aka clamp
- v-block screws aka clamp screws
- receiver
- tool to tightening v-block screws into receiver
- pre-warning / caution:
- do not overtighten v-block screws
- typically screws are steel & receiver softer alumninum, thus overtightening could strip/damage receiver
part 1
- steps:
- carefully/slowly insert barrel into receiver w gentle twisting if resistance
- rest v-block against barrel/receiver
- insert 2 v-block screws partly into v-block and partially turn the screws but not to resistance yet with alternating sides
- stop here, proceed to bolt assembly/spring/handle insertion and come back here to fully align/tighten vblock/barrel once bolt inserted
part 2
aligning barrel/receiver
- see Stocky's image
- ensure barrel is fully seated
- v-block should be flush: check alignment bottom surface and both sides
- if sights attached to barrel ensure these appear aligned as if you were sighting in
- extractor on bolt assembly - if using this assembly order come back to this step after bolt inserted (i.e. leave v-block screws not fully tightened)
- should not contact extractor recess (groove) in barrel (see huntdaily image)
- slowly release bolt forward checking alignment (i.e. don't slam misaligned extractor onto barrel)
- indexing method (via rimfirecentral):
- start with bolt into estimated center of groove
- very gently rotate barrel until resistance (extractor contacting wall of groove)
- make index mark with pencil on barrel
- rotate the other way
- make another barrel index mark
- now rotate the barrel to approximate center in between marks to better estimate center of extractor groove
- Brownells re extractor
- adjust with gentle twisting motion
- if tight fit heating barrel may help with initial insertion
- after alignment checked further tighten v-block screws with alternating sides
how tight should v-block screws be?
- I cannot find explicit authoritative information on torque or best tools to use to measure it, partly I think because may be dependent on specific parts used and involved dimensions/tolerances
- I hand tightened approximately a quarter turn once more significant resistance encountered (note subject terminology due to lack of measuring device), not as much torque as seemingly applied in Brownells video
- if you have authoritative references on this topic these would be much appreciated
- via rimfirecentral forums reportedly from ruger: 10-20 in lbs
- Brownells:
- "we find 45 in lbs is adequate"
- "some manufacturers recommend 65 in lbs"
- in their video they do not measure
- iraqveteran8888:
- hand tight + quarter turn, up to ~20 in lbs
- Stocky's:
- "28 in lbs is factory spec" (subjectively "snug")
- forums: all over the map - e.g.:
- https://rugerforum.net/ruger-10-22-rimfire/124667-torquing-10-22-screws.html
- https://nygunforum.com/threads/10-22-torque-amounts.12141/
- note that some torque measuring tools that are used for takedown screw torque settings cannot reach the v-block screw heads (another tool is necessary)
- see:
bolt assembly with spring and bolt lever
- start with barreled receiver (w loose vblock screws) upside-down
- insert charging handle with spring
- hardest part:
- hold spring/handle back
- drop bolt down so spring catches it - press lightly down and forward (sounds easy, was definitively not the first time I did this)
- see Brownells
trigger group insertion
- obviously make any planned modifications to trigger group now before insertion (e.g. auto bolt release)
- drop trigger assembly into receiver
- insert cross receiver pins
- see Brownells
function test / headspace check
- check fit with dummy ammo
- "go-gauge": ~normal-size dummy ammo. ensure bolt closes fully on breach face
- "no-go gauge": too-large dummy ammo. ensure bolt does not fully close
- I did not do this
- see Brownells
insertion of barreled action into stock
- barreled action = barrel + receiver + bolt assembly + trigger assembly
- note:
- if you have add-on options for stock, sometimes these need adding before insertion of barreled action (e.g. magpul x-22 side-rail mounts)
- ensure safety is in mid position, halfway between safe & fire
- needed in order to clear rim of most stocks
- lower the barreled action into the stock
- ensure any resistance is not the safety
- sometimes some gentle wiggling is necessary
- see Brownells
insert takedown screw
- takedown screw holds stock against barreled action
- most are hex-head now
- torque wrench is of utility here
- some shooters report significant group differences with torque honing, others just hand-fit to snug
- how tight should takedown screw be?
- this may vary depending on exact parts/dimensions used
- via rimfirecentral forums reportedly from ruger: 15-20 in lbs ()
- Stocky's: "proper torque value is about 18-25 in lbs" - recommend accuracy testing at 1-2 in lb intervals. never go above 30 in lbs
- Kidd: recommend 10 in lbs
- I started with 15 in lbs
- too tight and might damage receiver
- recommend starting on low end and shooting groups with torque-wrench adjustments at range
- also see:
test action for proper operation
- action/bolt back/forward
- safety movement
- trigger release/reset