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View Full Version : Single base scope mount....



Kathy
12-31-2008, 10:16 AM
My friends:

I have been using a single base scope mount system for years.......some folks have asked why on another thread.....

A thought: Why should I go to extreme measures to make absolutely sure the bedding on the bottom of my action has no binds, then attach an aluminum tube to the top of my action, that expands and contracts every hour of the day as the temp changes and have that tube attached at two points, four inches apart, to bind up the top of the action....

Does it matter whether the bottom of the action is in a bind, or, the top of the action is in a bind? Either way, the action is still in a bind.

I can't imagine ever going back to a two piece base system again.....if the scope tube was of steel, the probelm probably wouldn't be as bad....but aluminum?

Your friend, Bill Calfee

B. Harvey
12-31-2008, 11:58 AM
Or you can buy a Hall with an integral rail and not worry about it.

tim
12-31-2008, 03:18 PM
Bill, have you perhaps "solved" one problem while creating a new one, that is the potential issue on the erector tube inside being impacted with all the unsupported weight on the rear 3/4 of the scope? What about the potential bump against a pretty fair span of scope tube?

Dennis D.
12-31-2008, 03:58 PM
Okay, it's winter and we're bored. So how does the expansion ratio of a stainless steel action compare to the carbon fiber stock it's mounted in? Perhaps we need a single mount into the stock. Just a thought.

Dennis

Kathy
01-01-2009, 07:32 AM
My friends:

I know very little about scopes.......I use three old Lyman All Americans....one bumped to 30 the other two 20 power.....why do I use these? Cause I got them as much as anything I guess and they have pretty good optics and must be dependable as they are 30 plus years old and still work perfect.....and, it's real easy for me to put good, super fine hairs in them......you find one of those spiders that builds a web with several long outrigger strands then the main web in the center......take one of the outrigger webs and hold it in one hand and with the thumb and finger of the other pull lightly on the strand and you will fraze it back.....the web is actually several strands....you keep working at it and you can get down to one strand.........then on these old Lymans, you can take fingernail polish and glue the web in place.....the one on my 30 power was put in about 15 years ago and it's kept in an unheated garage most of the time and is still perfect............

Anyway, there's better scopes..........big problem with these Lymans are they have 1/4 minute clicks....not too good for score shooting like I do....

In discussing my one base set-up, I assume we start with absolutely perfect, lapped rings, or one of the self centering rings.......

As far as so much of the scope hanging out....and how it may affect the scope internally? I don't like the overhang either...but I've not only not seen any internal problems but actually some internal problems are solved with my single base.......examples: For years, with two rings apart, normal set-up, I would sometimes notice at a match my point of aim shift during the day....and sometimes I'd make a couple of clicks of adjustment and it might be a shot or two until I saw the movement on the target, then it might have moved too far......I'd have to click back and wait again.....part of this problem may just be these old scopes.......

But, with my one base set-up, if I move a click, the bullet impact moves, right then, a click........and now when I start a match, I end the day with the exact same POI as I had at the start.......so something is working..

I don't like using the 6x48 hardware.....as a matter of fact on my new pistol I'm re-drilling to 8x40 hardware.......

I've also made up a "safety" base/ring that fits the rear receiver...it wraps around the scope but does not touch the tube......I use my thumb on the scope to assist cocking, an old habit......this safety ring is right where my
thumb goes so I don't touch the scope..........but, after using it some, I left it off and go without it and I still lay my thumb on the scope, and I still have the 6X48 hardware and I've never had a problem......I shot my #13 pistol a whole year like that with no problems.......

Could one bump the scope enough with it hanging out to cause a problem....of course....

I plan on having a talk with my friend Flash Ebert and see if he will incorporate 8x40 hardware on the actions for me..... along with bases to match.....then a shooter can have a choice.......

MY friends, if I didn't think this system had potential to increase accuracy, it's be kinda silly to do it.......

I quote Sir Philip Sidney "NOTHING IS ACHIEVED BEFORE IT IS THOROUGHLY ATTEMPTED"

Your friend, Bill Calfee

tim
01-01-2009, 10:13 AM
Thanks for the response. Since these guns usually come up light anyway, how about killing two birds with one stone and mounting up one of the "locked" scopes that incorporate the Bukeys or Jewell type mount. I'm surprised we have not seen any of these to speak of in rimfire. The adjustment can be a bit finnicky but the systems work well.