Firearm & Gun Forum - FireArmsTalk.com > Gunsmithing & Do-It-Yourself Projects > Gunsmithing Forum > drill and tap a hole in receiver of Winchester SXP defender

Reply
 
LinkBack Thread Tools Display Modes
Old 09-28-2011, 04:34 PM   #1
Feedback Score: 0 reviews
 
Join Date: Sep 2011
Location: Davis,California
Posts: 4
Default drill and tap a hole in receiver of Winchester SXP defender

I purchased a tac-star side saddle shell holder for the Winchester 1300. The thru-bolt replacement for the pin in the rear of the receiver fits fine, and the side saddle sits nicely on the receiver. however, the clip at the bottom edge of the side saddle does not fit the edge of the loading port on the SXP. I would like to drill and tap a 3/16" hole into the receiver, possibly 2 of them, to attach the side saddle.

i have attached an image of the locations where i want to put these holes.

the 1st arrow shows the pin that is replaced by a bolt in the standard installation of the side saddle. this works fine on the SXP, as I mentioned above.

the 2nd arrow shows the location of one hole i want to tap into the receiver. it would be just in the aluminum of the receiver itself, and would fit a 3/16" short bolt. i could use a 1/8" instead, possibly. this would be the second attachment point for the side saddle

the 3rd arrow shows where the second new hole would be. the aluminum of the receiver is about 5mm thick there. the side saddle has a curved flange that hugs the curved top of the receiver (I have an arrow pointing at that from the number 3 also), preventing the saddle from swivelling on the rear pin in the counter-clockwise direction (looking at it in this image). but that flange does not stop the saddle from swivelling up (clockwise). the second attachment point (at arrow number 2) woud prevent this clockwise swivelling, but it is colinear with the rear bolt (arrow number 1), therefore, a third attachment point at arrow 3 would be nice, as it would reduce flexing and generally firm up the attachment of the sidesaddle.

OR maybe i only need the 3rd point.

what do you guys think?

is it OK to drill either or both of these holes? i have the tools and skill to do it right, but i dont know if it is dangerous for the receiver or not. in either case, i would make a bolt that would extend just to the inside of the receiver aluminum, not beyond it.

the lower hole (number 2) seems like it would be OK, since that is right next to the open loading port anyway and certainly is not under pressure. the upper bolt location is closer to the action and the chamber, but still not under pressure at firing (i think).

sxp_defender_leftside_tapholes.jpg  
__________________

Last edited by kingfisher; 09-28-2011 at 04:40 PM.
kingfisher is offline  
 
Reply With Quote

Join FirearmsTalk.com Today - It's Free!

Are you a firearms enthusiast? Then we hope you will join the community. You will gain access to post, create threads, private message, upload images, join groups and more.

Firearms Talk is owned and operated by fellow firearms enthusiasts. We strive to offer a non-commercial community to learn and share information.

Join FirearmsTalk.com Today! - Click Here


Old 09-28-2011, 05:06 PM   #2
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
TheOldMan's Avatar
 
Join Date: Feb 2010
Location: Warner Robins,Georgia
Posts: 1,009
Liked 33 Times on 26 Posts
Likes Given: 9

Default

If you've got the tools and the skill there is nothing holding you up.. The holes you are talking about doing will in no way affect the integrity of the reciever.

__________________

NRA Life Member, Georgia Gun Owners
www.RCGunworksllc.com

" Guns have only two enemies: RUST & POLITICIANS"

"Free men do not ask permission to bear arms"

The U.S. Constitution: The 2nd Amendment is in place in case the Politicians ignore the others"

TheOldMan is offline  
 
Reply With Quote
Old 09-28-2011, 05:57 PM   #3
Feedback Score: 0 reviews
 
stalkingbear's Avatar
 
Join Date: Sep 2007
Location: Lebanon,Ky
Posts: 3,621
Liked 11 Times on 10 Posts
Likes Given: 3

Default

I don't see why there would be a problem IF you're dead set on drilling the holes. You realize it will hurt the value if you're ever forced to sell it right? You might consider a different sidesaddle shell carrier as Tac-Star stuff if pretty cheap and a better fitting carrier might not exhibit the problems you're having.

__________________

Sometimes you earthlings REALLY amaze me!

stalkingbear is offline  
 
Reply With Quote
Old 10-14-2011, 06:13 AM   #4
Feedback Score: 0 reviews
 
Join Date: Sep 2011
Location: Davis,California
Posts: 4
Default

Hey thanks for the responses guys!

I wont be selling it.

i looked for a while for anything like this to fit this shotgun. i could not find a single other side-saddle style shell carrier to fit any winchester. in fact, this one is built for the winchester 1300. it does fit really well as far as the surfaces meeting the receiver, but the clip at the bottom is wrong.

do you know of any other side-saddle carriers that might fit this shotgun?

__________________
kingfisher is offline  
 
Reply With Quote
Old 10-17-2011, 01:30 AM   #5
Feedback Score: 0 reviews
 
trex1310's Avatar
 
Join Date: Jul 2009
Location: Mobile,Alabama
Posts: 288
Liked 5 Times on 4 Posts
Likes Given: 1

Default

You know you will be ruining a perfectly good shotgun. That said,
I doubt you will get many threads even with a machine screw tap.
Good luck.

__________________
NRA Life Member / Vietnam Vet
Certified in laziness
Certified in watching TV
Certified in napping
Certified in BBQ on the Green Egg
trex1310 is offline  
 
Reply With Quote
Old 10-17-2011, 04:48 PM   #6
Feedback Score: 0 reviews
 
Join Date: Sep 2011
Location: Davis,California
Posts: 4
Default care to expand?

Hey Trex,

Maybe you didnt read my post, but, actually, that is why I posted the question: because I DONT know if I will be ruining my gun.

Now, several guys have said it will be fine, but you seem to be saying that you dont think its a good idea.

I have a lot of experience with metalworking, ferrous and non-ferrous. I can do precision machining in my shop. I have 5/32" of aluminum to work with. With 48 threads per inch, I can get 7 threads. I think that is plenty, considering that each of these new bolts will only be carrying 1/3 of the shock, and only with respect to the mass of 6 shot shells and the tac-star carrier.

Can you explain why you say I am ruining my shotgun?

I am open to the idea that I may be risking damage to my shotgun, and I want to be sure I am not. I am also open to the idea that you are just mouthing off and dont really have anything to say, but I am hoping that is not the case.

I honestly am interested in your thoughts on this, if you have anything useful.

__________________
kingfisher is offline  
 
Reply With Quote
Old 10-18-2011, 01:56 PM   #7
The Apocalypse Is Coming.....
Feedback Score: 0 reviews
 
Axxe55's Avatar
 
Join Date: Aug 2011
Posts: 28,177
Liked 20854 Times on 11855 Posts
Likes Given: 52393

Default

Quote:
Originally Posted by kingfisher View Post
Hey Trex,

Maybe you didnt read my post, but, actually, that is why I posted the question: because I DONT know if I will be ruining my gun.

Now, several guys have said it will be fine, but you seem to be saying that you dont think its a good idea.

I have a lot of experience with metalworking, ferrous and non-ferrous. I can do precision machining in my shop. I have 5/32" of aluminum to work with. With 48 threads per inch, I can get 7 threads. I think that is plenty, considering that each of these new bolts will only be carrying 1/3 of the shock, and only with respect to the mass of 6 shot shells and the tac-star carrier.

Can you explain why you say I am ruining my shotgun?

I am open to the idea that I may be risking damage to my shotgun, and I want to be sure I am not. I am also open to the idea that you are just mouthing off and dont really have anything to say, but I am hoping that is not the case.

I honestly am interested in your thoughts on this, if you have anything useful.
what trex is talking about is the thickness of the receiver not being thick enough to be able to get enough threads in to hold the screw. how thick is the receiver where you want to drill and tap? that is the point that trex is making because if you start drilling holes and trying to tap them, then putting a screw in and try to tighten it and then it pulls the threads out, you now have a useless and ugly hole in your shotgun, ruining the value of it.
__________________
Coming from the Village of the Damned.
To the victor, go the spoils of war.
Axxe55 is offline  
 
Reply With Quote
Old 10-21-2011, 12:32 PM   #8
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
TheOldMan's Avatar
 
Join Date: Feb 2010
Location: Warner Robins,Georgia
Posts: 1,009
Liked 33 Times on 26 Posts
Likes Given: 9

Default

Kingfisher I personally think you know what you're doing and I'd not worry about the threads not catching. You intend to keep the gun so no harm no foul in my opinion. We're not talking about a high dollar shotgun anyway so set it up how you like ..

I find more fault with folks who paint their guns pink or douse them in fake high polish gold but that's just my opinion.

__________________

NRA Life Member, Georgia Gun Owners
www.RCGunworksllc.com

" Guns have only two enemies: RUST & POLITICIANS"

"Free men do not ask permission to bear arms"

The U.S. Constitution: The 2nd Amendment is in place in case the Politicians ignore the others"

TheOldMan is offline  
 
Reply With Quote
Reply

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Firearms Forum Replies Last Post
Winchester SXP Defender questions SHIFTY General Shotgun Discussion 20 03-31-2012 03:58 PM
Winchester 1300 Defender JiroZero713 General Shotgun Discussion 9 08-22-2011 02:07 AM
Drill baby drill Sniper03 Legal and Activism 11 05-17-2011 02:07 PM
This Is A Drill. gorknoids Concealed Carrying & Personal Protection 31 04-13-2010 04:46 AM
Winchester Defender NGIB General Shotgun Discussion 11 03-18-2010 04:09 PM