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Good range day with Ruger Mark IV 22/45 and S&W 617.

AzShooterAzShooter MemberPosts: 31 Member
Today was a good day at the range with my Ruger Mark IV 22/45 and my S&W 617.

Two weeks ago I noticed that my compensator was filled with lead and I had to clean it. I tried “Wipe Out” that I got from Brownells to clean the comp. It worked like a charm. After about an hour of sitting I could scrape all the lead out.

I thought this would help my groups but to my surprise they went from 3 inches at 25 yards to 10 inches. To see what was wrong I determined I had to take my compensator off and check the muzzle. It was caked with the Wipe Out.

I cleaned it up using my MPro-7 and a brass brush. Now the muzzle is squeaky clean. I also decided to recut the crown to 11 degrees and see if that would help the groups.

Today I started at 25 yards with Eley Pistol Match and saw a big difference. What would only group 3 inches before now gave me a great group 1 inch in diameter. I was shooting from a heavy bag rest which was very steady.

CCI Mini Mags and Standard Velocity also produce good groups of 1.5 inches each.

The 617 needed a little work. I had to increase my trigger pull from just under 7 lbs double action to just under 8 lbs to get 100 per cent reliability. Using Federal HV and Federal Auto Match The gun functioned flawlessly through 100 rounds of each. Groups were also nice at 1 ½ inches at 25 yards from the same heavy bag rest.

The 617 still would skip a round or two out of 100 using CCI MM or SV ammo. Fortunately I have a good supply of Federal Ammo for the 617.


  • Big ChiefBig Chief Senior Member Posts: 32,995 Senior Member
    Sounds like you had a good range day. :guns: :guns:

    My S&W model 63 did have some issues when firing DA and skip one every cylinder full or so. SA was fine. I put a spring kit in it including a new mainspring and haven't had a misfire yet with any brand I've fired and the trigger pull is better.
    It's only true if it's on this forum where opinions are facts and facts are opinions
    Words of wisdom from Big Chief: Flush twice, it's a long way to the Mess Hall
    I'd rather have my sister work in a whorehouse than own another Taurus!
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