Re: Best picatinny scope base for a 700 short acti
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: buffybuster</div><div class="ubbcode-body">Either the base or your receiver is crooked (maybe both).</div></div>
I'd bet the receiver is crooked, assuming it's a remington.
A while back I looked high and low for dimensions for the remington 700 scope mounts, but I couldn't find anything useful. It seems like everyone makes bases for the "chevy" of the gun world, so why is it so hard to find numbers? One guy I called told me that there's no way I'd be able to get "blueprints" for a remington receiver, and I tried to explain that I already bought one that didn't come with sights, and that I only wanted to know the dimensions for the mating parts. Most people I know would call this an interface drawing. I guess the dimensions for the receiver and the whole slew of after market bases are proprietary. I finally gave up and reverse engineered the receiver I had, and after taking careful measurements I made a one piece base that perfectly fit my receiver. Since I had the CNC all set up and programmed, I ran a few more just to have some spares lying around. Well, I later got another remington receiver and when I went to install the base I made earlier it was off by quite a bit. With the front screws snug there was a 0.020" gap between the rear of the base and the back end of the receiver. Another receiver I was working on for a friend was off by 0.012" as compared with the first one.
I'm a little more experienced in this hobby now, and I guess it is common practice to shim, glue, or "bed" scope bases on remington receivers. So I guess the industry that invented interchangeable parts is not really up to date. A couple different people have told me that remington finishes their receivers by hand with a belt sander. I guess the 2-piece bases reduce the problem by letting the scope tube flex, or by honing out the rings to be in line with each other.
So basically I would not be surprised if you have a base that doesn't really match the receiver. I have to wonder how many 1-piece bases get installed by just cranking down the screws whether it lines up or not.