Running out of options: mounting problem

huntingfish

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I'm running out of options...here's my story: All of which happens for my H&R Pardner Pump (870 clone).

I originally bought tru-glo sights: I'm not that great with sights. Took them off.

I spotted a Nikon p-tactical spur in the EE and purchased it.
Went ahead and got a weaver rail at a local store and installed it: Anxiously waiting for the Spur to get to me.

Once the Spur got here, I noticed it would only mount on a picatinny rail. Oh well, I thought. 10$ down the drain for the weaver rail...who cares, I'll just get a pica rail for my pardner.

There's a lot of stuff on the Internet, but let me say this: There are no more pica rails that fit a Pardner pump on the Internet.

Trinity supplies seemed to have some, and would ship to Canada(!), but unfortunately they are BO for another 4 weeks. Normally, I wouldn't mind...I'd order it and it'll get here when it gets here. But I have to manually go and try to purchase it every day until it actually goes through.

I called a local smith that does repair work for H&R. I thought their suggestions were weird (in the order proposed to me):
1) Take a rail for an 870, drill and tap 3 extra holes in the receiver to match the 870: 200$
2) Take a 870 pica rail, alter the rail to match hole spacing of the Pardner Pump: more than 200$.

I really want to use this Nikon sight...it looks amazing. But it's becoming quite a problem to mount it on my 250$ Pardner Pump.

I'm not sure what gunsmiths charge per hour...did they simply not want to take the job and quote me a super high amount for the work hoping I'd say "forget it" or is that the going price for such work?

The hole spacing seems to be as follows (3 holes total):
1 and 2: 1.300"
2 and 3: 1.000"

I was thinking there's probably a small pica rail that exists that mounts with 2 screws spaced exactly 1" apart. But as much as I searched, I couldn't find one.

Failing that, is there an undrilled pica rail that could be bought and then machined? Could a normal machinist do the job if he's careful with the attention to details, etc?

I even went as far as check to see if there was an adapter of some sort that I could put on the weaver rail and get a single slot picatinny: Just enough to be able to mount my reflex sight! Doesn't appear to exist.

As a last ditch thing, I could always get a shotgun scope mount that mounts with the receiver pins...but that looks bulky. Are those any good? More expensive too.

Final option is to simply sell the Nikon Spur and get a TRS-25. But I'm hoping it won't get there. I even saw a guy that machined a weaver slot to accept picatinny rings (video of a reloader).

Help me sort this out! Cheers everyone for any help ;-)

David
 
If I’m reading this right, your gunsmith wants $200 to drill and tap three holes?

Basically. Not sure how the gunsmithing world works...maybe they have to align a lot of stuff to make everything square. But that does sound rather expensive to me.

Talking to another smith tomorrow...

David
 
I do own both. What's on your mind? Also have a cheapy drill-press from Canadian Tire too ;-)

Get a center punch a scribe and some good layout tools. You will need a vise to hold it rail level and flat. Drill a small pilot hole, then drill the full-size ones. If you still have the Weaver Rail; use it as a template fixture to drill your Pic. rail.
 
Get a center punch a scribe and some good layout tools. You will need a vise to hold it rail level and flat. Drill a small pilot hole, then drill the full-size ones. If you still have the Weaver Rail; use it as a template fixture to drill your Pic. rail.

One little trick that comes in very handy, when drilling holes in receivers/rail is to start the hole with a very stiff, centering drill bit, used on lathes for drilling a center hole in the end of a piece of metal, for turning between centers.

The drills out of your index are to flexible and have a tendency to walk, causing off center or out of align holes. I've seen small bits walk right out of a center punch mark to often. Especially on a drill press that isn't all that good.
 
Bingo! Alter the base to match the receiver.

The fact that I was suggested the other way around made me very weary and suspicious.

I did find a loophole into this whole mess. Trinity supplies' store on Amazon has the rail "in stock" (which I find odd, cause the person I spoke to said they were out...amazon tactics maybe?). 23$ for the rail, 46$ for the shipping. I might have to bend over and purchase it, but will contact a second and third gunsmith today to get a good idea of my options.

David
 
I did find a loophole into this whole mess. Trinity supplies' store on Amazon has the rail "in stock" (which I find odd, cause the person I spoke to said they were out...amazon tactics maybe?).

Amazon does fulfillment for retailers, Basically the retailer sends them a couple hundred parts and Amazon does all the shipping (for a small fee to the retailer of course) that way, yes, the retail store could be out of stock, but Amazon won't be.
 
seems very expensive , for a job you have the tools for .
get the 870 rail and drill it to match your reciever.

This is the ticket, especially since you have a drill press. If one of the holes on the rail lines up with a receiver hole carefully measure and mark where the second hole needs to go, drill it on the drill press. You might need a drill press vice to hold the picatinny rail but a clamp or vise grip will do in a pinch, center punch the hole so the drip bit doesn’t wander.

I’ve done this a couple times with various things, picatinny rails included, definitely not a hard diy job nor is it a $200 task.
 
Spoke with another gunsmith. He said probably my best option at the moment would be to simply enlarge one of the cross-holes in my weaver mount to accept my Nikon Spur.

Could be done for 40-50$, probably within a week, but official lead times are 2-3 weeks.

But it doesn't seem like the perfect solution.

David
 
Amazon does fulfillment for retailers, Basically the retailer sends them a couple hundred parts and Amazon does all the shipping (for a small fee to the retailer of course) that way, yes, the retail store could be out of stock, but Amazon won't be.

Ahhh, that would explain it then. Cheers for the explanation sean69!

David
 
As Daver said, you have the weaver base in stalled already, you have files , they are not that much difference, Unless I am missing something , make your mount fit the sight.
 
Alrighty, so I had made the move to purchase a pica rail from Trinity through amazon.ca. Order was cancelled.

Went ahead and tried to alter slowly the groove in the weaver rail. The Spur now fits! I checked with a woodworking square that everything seems alright even though I know it's not perfect.

Seems close enough!

I'll try to take pics later on...

David
 
Spoke with another gunsmith. He said probably my best option at the moment would be to simply enlarge one of the cross-holes in my weaver mount to accept my Nikon Spur.

Could be done for 40-50$, probably within a week, but official lead times are 2-3 weeks.

But it doesn't seem like the perfect solution.

David

Are you handy with a flat file???

Take a bit of time and carefully file out the bits you don't need or are in the way of your cross bolt.

A proper size file is around $10.

Overall cost - $10 for a file and an hour or so of your free time.
 
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