wrong hole in lock plate

[big bore 75]

here's a wonderful problem was buttoning up the the new rifle and pick up the wrong bit and crap its too big I was drilling for a 10-32 lock screw and it is too large i'm panicing :curse: so whats a good fix besides 110.00 out the window . bb75

 

[Le Mamou]

Go a head and tap the over size hole, run a bolt in to fit the new threads. Cut it off, and file flush. Tack weld from the back side, file that flush. The hole is now healed.

Redrill with propper size bit.

Jim...

 

[rich pierce]

you could send me the lock, it's practically worthless now. Just kidding. Don't feel so heartsick, the fix above is a good one.

Other options- period ones:
1) drill the hole even larger (1/4") then square the hole with a file. Make the hole and the plug larger on the outside of the lockplate than the inside, so it could never pull out when you tighten the lock. Make a mild steel square plug and braze into place. This will show but will be strong. Brazing commonly used for repairs.

2) do as above but also engrave little furrows inside to help grab the plug. Then peen the rivet into place with everything you've got. File it off square inside and out and you're good to go w/o the brazing. The plug needs to be a decent amount larger than the bolt you intend to use.

 

[Black Hand]

Go a head and tap the over size hole, run a bolt in to fit the new threads. Cut it off, and file flush. Tack weld from the back side, file that flush. The hole is now healed.

Redrill with propper size bit.

Jim...

I do the same but I dip the bolt in silver-bearing solder before I screw it in. Heat to melt the solder, cut off a little long on each end, give it a good rap with a hammer to "spread" the blot a bit, then file off flush. When I have done this, you can't see the repair unless you know where you look. It may show the silver solder line if you brown the lock.
Black Hand

 

[Zonie]

I don't know how much material you have around the hole to work with, but you can buy #12-24 and #12-28 screws and the taps for them.
Even the Ace near me has these available.

A #12 thread is .216 diameter. That's only .026 larger in diameter (.013 on the radius) than the #10 you were planning on using.

If you decide to go with a #12-24UNC (course)thread it needs a #16 (.177 dia) tap drill. a #12-28 uses a #14 (.182 dia) tap drill.

I've found the #10 and the #12 round head screws available from the hardware store usually have a head that is too large in diameter and it's the wrong shape.
Chucking the screw in an electric drill and filing the outside diameter of the head down into a cylinder turns the round head screw into a fairly good looking fillister head screw that might look fine on your gun.

 

[big bore 75]

Hey thank you guys now its just which one do I choose , hmm the simple solution will let ya all know how it goes friday got to go to the old grind stone, ::, your help is appresiated .bb75