60cj6, sorry ... I don't have any measurements on the springs I used in the "buttons" area. I got them from my "spring box". All I did was pick a spring that was slightly less (about .002") in wire diameter, same length and equal or greater number of coils. I'm sure you could find some at the...
Well, I shot this thing today and it “kinda” cycled the 7/8 oz loads. Half of them worked OK and the other half “stove piped”. I still think I need to reduce the cocking effort a wee bit more … somehow.
I did take 1 oz loads with me this time … they work just fine. I shot the 1 oz loads with...
I received the new spring today and it fits over the magazine tube as expected. It is shorter by 1.75". I measured the "cocking effort" and the results are as follows:
Effort with original spring = 17 lbs
Effort with new spring = 15.5 lbs
That is a total of 1.5 lbs reduction, that might be...
Well I finally shot this thing. After all the polishing I did on this thing, I was confident that it would cycle 7/8 oz low brass shells … well it didn’t, and I was so confident that I didn’t take any 1 oz loads with me … silly me. It almost cycled two of them.
So I am wondering if they used...
yea, I thought about that ... but the service temperature of the blue Loctite is -65 F to 300 F.
If I get that bolt up to 300 F ... I think I have another problem.
Darth
Locktite and “bolt pin” retention
I recently had to grind out the “factory staking” that retained two pins in the bolt (SA-20) that I was working on. I didn’t want to “re-stake” the pins afterwards because I might want to take it apart at some future date and grinding out the stakes is a...
Well, last night I installed a lighter spring under the "slide release button" as well. The whole thing is much easier to operate now ... and it's easier to remove "unfired shells".
So, just to re-cap the whole thing ... I have replaced BOTH springs in the slide release mechanism.
I also...
I've never had a barrel threaded ... or dealt with Aimpro, but I would just hang in there a little bit for them. They "appear" to be Mossberg specialists.
That's where I would have went ... not knowing.
Darth
Another thing you can do is polish the areas in the red circles.
On the far left is the ramp that sets the "elevator" as the action bar travels backwards, I polished the area (ramp) behind it as well.
In the middle is the ramp that cocks the hammer, this is an important one because after the...
Thanks ... but I would just drive them nuts I think ... and the guns would cost 3 times as much. :D
I think it's silly about the magazine tube, one other guy I was talking to tried to get his out, and he couldn't either ... and he's a retired gunsmith !! He ended up doing a different version...
Slide release modification
I have read that the slide release buttons on these things were hard to push, my slide release button was no exception. After examining "how this thing works", I discovered that the piece in the red circle on the left simply "stops" the elevator from raising, thus...
My Magazine tube “Fix”
This is how I built a retention system after I filed off the original ridge.
If you look close, you can see the retaining wire on top of the steel washer in the magazine tube. The wire is .029 music wire with a small "hook" on each end. I drilled .035 diameter holes into...
Hello all, I'm new here.
I was in the market for a semi-auto 20ga shotgun and, as I was searching, ran across very few reviews of the SA-20 ... well good ones that had any meat to them. I did find one that was very good. The fellow actually went into good detail. So I thought I would join here...