I have already made a post listing some of the first problems on my SR1911, but will add to that list a sloppily fit bushing and an unfinished muzzle crown.
In my first 75 rds through the Ruger - accuracy was on par with a 12guage using bird-shot @ 25yds.
Well, last night, I finished up the crown with some lapping compound and a ball bearing then fitted a National Match Bushing to my Ruger. I don't know if the unfinished crown introduced any accuracy issues, but I worked on it anyway. The bushing, I was for certain, did.
Below are photos of slide, barrel, and both bushings - as well as targets fired using each. The differences are noticeable
First are factory slide and barrel measurements:
Here are the factory bushing measurements
Notice the factory bushing OD is .0045" smaller than the slide ID - and the bushing ID is also .0045" larger than the barrel OD
So, just with the bushing, we are at .009" worth of slop - and it definitely showed up in the accuracy during the first two shooting sessions.
Now here is the NM Bushing I fit with .001" clearance between both the barrel and slide. Bushing requires little effort to remove with the wrench.
So, now that all of that was done it was time to go to the range.
I was shooting at 20yds from a standing rest only (wrists over padded 2x4). Ammo used was Federal 230gr FMJ for all targets.
It was a nippy 40deg with wind @ 5-10mph.
First two targets were shot using the factory Ruger bushing - These are practically the same results I had from the first two shooting sessions. Horrendous !!!
Well, here is the very first group I fired using the newly fitted bushing. That ragged hole has 6 shots in it - and no, that top shot is not a flyer. I adjusted my POA to cover the bulls eye with my front sight.
As you can tell from the last target, I had to center the sights (they were not from the factory) and I had to completely cover the orange bulls-eye with the front sight in order to bring up my groups.
Because of a lack of a point of reference, that sight picture doesn't lend itself to bulls-eye accuracy, but the results were definitely good enough for me.
Here are my first and second attempts at it.
I experienced no failures of any kind, and the ejected brass was at my4 o'clk and around 5ft.
Right now, this thing is running smooth and shooting like my others. hopefully it'll hold up.
In my first 75 rds through the Ruger - accuracy was on par with a 12guage using bird-shot @ 25yds.
Well, last night, I finished up the crown with some lapping compound and a ball bearing then fitted a National Match Bushing to my Ruger. I don't know if the unfinished crown introduced any accuracy issues, but I worked on it anyway. The bushing, I was for certain, did.
Below are photos of slide, barrel, and both bushings - as well as targets fired using each. The differences are noticeable
First are factory slide and barrel measurements:
Here are the factory bushing measurements
Notice the factory bushing OD is .0045" smaller than the slide ID - and the bushing ID is also .0045" larger than the barrel OD
So, just with the bushing, we are at .009" worth of slop - and it definitely showed up in the accuracy during the first two shooting sessions.
Now here is the NM Bushing I fit with .001" clearance between both the barrel and slide. Bushing requires little effort to remove with the wrench.
So, now that all of that was done it was time to go to the range.
I was shooting at 20yds from a standing rest only (wrists over padded 2x4). Ammo used was Federal 230gr FMJ for all targets.
It was a nippy 40deg with wind @ 5-10mph.
First two targets were shot using the factory Ruger bushing - These are practically the same results I had from the first two shooting sessions. Horrendous !!!
Well, here is the very first group I fired using the newly fitted bushing. That ragged hole has 6 shots in it - and no, that top shot is not a flyer. I adjusted my POA to cover the bulls eye with my front sight.
As you can tell from the last target, I had to center the sights (they were not from the factory) and I had to completely cover the orange bulls-eye with the front sight in order to bring up my groups.
Because of a lack of a point of reference, that sight picture doesn't lend itself to bulls-eye accuracy, but the results were definitely good enough for me.
Here are my first and second attempts at it.
I experienced no failures of any kind, and the ejected brass was at my4 o'clk and around 5ft.
Right now, this thing is running smooth and shooting like my others. hopefully it'll hold up.
