RevolverJockey Posted December 5, 2013 Share Posted December 5, 2013 So this morning I took out my new 627 Super for a test drive. Until I get a lighter rebound spring in, I clipped a few coils off of a 14# and set the trigger to 5.25#. Results were promising: So were the groupings: Obviously, I was aiming for the center of the target. I really like the sight picture and even with the rear sight bottomed out this is what I got. Is close enough at 20 yards or should I start shopping for a new front sight? Lee Link to comment Share on other sites More sharing options...
kneelingatlas Posted December 5, 2013 Share Posted December 5, 2013 That's pretty awesome at 20yards! Is that freestyle or bench rest? Link to comment Share on other sites More sharing options...
RevolverJockey Posted December 5, 2013 Author Share Posted December 5, 2013 That was just off hand standing single action. I have a match this weekend and wanted to make sure the sights are on(ish). I plan on doing some better accuracy testing next week with a ransom rest. Lee Link to comment Share on other sites More sharing options...
RussB Posted December 5, 2013 Share Posted December 5, 2013 NIce! Many of "yooz gize" have sub 6# triggers and no issues with light strikes. I'm at about 6 1/2# and can't imagine it any lighter...reckon I gotta try. I have a 13# rebound spring and the Wolff RP mainspring. All my revolver 38 super brass is nickel plated Remington, federal primers and usually Clays Link to comment Share on other sites More sharing options...
RevolverJockey Posted December 5, 2013 Author Share Posted December 5, 2013 I just ordered 3 11s and 3 12s. Of you PM me your address I will send you one when I get them. Keep in mind if you need a pretty heavy mainspring to get reliable ignition with the ammo and firing pin you have, you can only rob the rebound spring soo much to improve the trigger pull. The should balance and work in symbiance with one another. Too light of a rebound spring and you end up with a two stage and even worse a gun that will not reliably return. The tension the mainspring exerts to the slider through the contact with the hammer cannot be overcome be the rebound spring and the trigger locks up intermediate. Personally, I think balance and positive return are more important to speed and accuracy than the weight of the pull. Lee Link to comment Share on other sites More sharing options...
alecmc Posted December 5, 2013 Share Posted December 5, 2013 nice groups, I wouldn't change the front sight if you are happy with visibility. if anything adjust your rear sight a hair. Link to comment Share on other sites More sharing options...
RevolverJockey Posted December 5, 2013 Author Share Posted December 5, 2013 That's the problem. It is bottomed out and is still 1.5" high at 20. I am sure I can get used to it and will wait to see how it ransoms at 50 before I change anything just looking at my options for the moment. Link to comment Share on other sites More sharing options...
RussB Posted December 5, 2013 Share Posted December 5, 2013 (edited) I shoot at steel...if that were my gun, I wouldn't touch a thing! Are there any direct fit front sites available? I had fit an SDM, but it sticks out of the 627's funky sight base Edited December 5, 2013 by RussB Link to comment Share on other sites More sharing options...
RevolverJockey Posted December 5, 2013 Author Share Posted December 5, 2013 This gun uses the older style pin in sights not the newer quick chance ones. I have a few pins and a .050" punch to swap them, but I don't feel like dealing with it. Link to comment Share on other sites More sharing options...
Toolguy Posted December 5, 2013 Share Posted December 5, 2013 How tall is the current front sight? Link to comment Share on other sites More sharing options...
RevolverJockey Posted December 5, 2013 Author Share Posted December 5, 2013 .190" Link to comment Share on other sites More sharing options...
Toolguy Posted December 6, 2013 Share Posted December 6, 2013 Sounds like you need about a .175. I can make you a special if you wish. Link to comment Share on other sites More sharing options...
RevolverJockey Posted December 6, 2013 Author Share Posted December 6, 2013 (edited) Warren, Don't I need a taller front sight? Like something in the .210-215" range? Lee Edited December 6, 2013 by RevolverJockey Link to comment Share on other sites More sharing options...
Toolguy Posted December 6, 2013 Share Posted December 6, 2013 Yes - you're right. I was thinking rear and writing front. A .200 might work. If you want we can try a standard ,200, if that doesn't work you can exchange it for a taller one. Or just go taller to begin with. Link to comment Share on other sites More sharing options...
Tom E Posted December 6, 2013 Share Posted December 6, 2013 Don't I need a taller front sight? Like something in the .210-215" range?~.220 would give you some range adjustment when installed rather than being bottomed out. What height is your rear blade? It's worth adjusting the front to be able to use a .160 rear. Link to comment Share on other sites More sharing options...
RevolverJockey Posted December 6, 2013 Author Share Posted December 6, 2013 (edited) So as expected, I got off the phone with S&W and the gun should have been built with a .215" patridge front vice the .190" it has now. They were super nice and were all set to send me a replacement sight and pins, except they are out of stock with no intention of making replacements as all current models use the slip in style. I think I may file a few thousandths off of the rear sight. I can't see dumping $50 into a new gun for 1" POI shift. Overall, I like the sight picture. Unless my math is off, I only need about. .012" Lee Edited December 6, 2013 by RevolverJockey Link to comment Share on other sites More sharing options...
TonyT Posted December 10, 2013 Share Posted December 10, 2013 So this morning I took out my new 627 Super for a test drive. Until I get a lighter rebound spring in, I clipped a few coils off of a 14# and set the trigger to 5.25#. Results were promising: So were the groupings: Obviously, I was aiming for the center of the target. I really like the sight picture and even with the rear sight bottomed out this is what I got. Is close enough at 20 yards or should I start shopping for a new front sight? Lee I see you found the magic formula 3.3 gr WST. That is my favorite load. Link to comment Share on other sites More sharing options...
RevolverJockey Posted December 12, 2013 Author Share Posted December 12, 2013 (edited) Admittedly, I don't have a lot of experience with a ransom rest and the one I have access to is old and beat up but I kind of expected better results. I think the vertical stringing was due to the inconsistent zeroing of the elevation screw. I more or less reset the machine before each shot, should I be making fine adjustments with the rest between shots? I pretty much assumed the machines mechanical repeat would be better than my eyes. At what point group wise can assume it is the gun and not the load? Any tips to setting up and using the ransom rest? Lee Edited December 12, 2013 by RevolverJockey Link to comment Share on other sites More sharing options...
Mover480 Posted December 12, 2013 Share Posted December 12, 2013 The gun should be zeroed, as best you can, for the distance you're shooting with the Ransom Rest. The Ransom Rest has a friction plate and spring that can be adjusted to increase or decrease the muzzle flip. You want to adjust the friction such that the gun shoots at point of aim. This will simulate your grip of the gun. Too much friction and the gun will shoot low, too little and it will shoot way high. Don't make any adjustments between shots, just reset it on the elevation stop. Shoot a couple cylinders to settle the gun in the inserts before you do evaluation shots. The Rest is not absolute. It's good for evaluating/comparing different loads/bullets/etc. without wearing yourself out. BTW, what distance was that target? Link to comment Share on other sites More sharing options...
RevolverJockey Posted December 12, 2013 Author Share Posted December 12, 2013 This was 50 yards. I think I figured out what the problem was. The inserts are hard to get on and off the rest. When I have them off the rest and put them just on the frame of the revolver they line up and sandwich together with no gap. On the rest there was a gap a little over an 1/8". I think I will try pressing the insert on the grips first tomorrow and retest. I think the frame might have been out of alignment with the insert allot some additional movement. I'll post results tomorrow. Lee Link to comment Share on other sites More sharing options...
wheelie Posted December 13, 2013 Share Posted December 13, 2013 You need to settle in the grip inserts and gun in the rest by firing a few cylinder fulls. While you are doing this you can adjust the drag on the "clutch" so that the gun ends up pointed about 45 degrees up (maybe a little more). If the clutch feels at all sticky, take it apart and clean it thoroughly. After re-checking everything for tightness, start shooting groups. This includes the insert clamp nuts and the clamps or bolts that hold down the rest platform. 1. Use the little trigger tripper mechanism supplied with the rest each time, don't use your finger on the trigger. 2. Use only the handle on the rest to reset the gun - every time. Do not touch the gun except as needed to reload, and do that gently as possible. 3. Every time, move the gun (using the handle on the rest) all the way back to muzzle vertical and then back down to the stop in one smooth motion. That ought to solve any rest operation problems. Link to comment Share on other sites More sharing options...
Shadowrider Posted December 13, 2013 Share Posted December 13, 2013 Admittedly, I don't have a lot of experience with a ransom rest and the one I have access to is old and beat up but I kind of expected better results. I think the vertical stringing was due to the inconsistent zeroing of the elevation screw. I more or less reset the machine before each shot, should I be making fine adjustments with the rest between shots? I pretty much assumed the machines mechanical repeat would be better than my eyes. At what point group wise can assume it is the gun and not the load? Any tips to setting up and using the ransom rest? Lee Man assuming that a lot of that vertical stringing was you adjusting, I'd be tickled pink with that group. Very interested to see what have when you get it "dialed in". Link to comment Share on other sites More sharing options...
RevolverJockey Posted December 13, 2013 Author Share Posted December 13, 2013 (edited) These are my handloads with bullets that I cast from range lead - these bullets are also unsized and tumble lubed with a homemade lubricant. There are sooo many variables, I don't even know where I would want to begin if I was included to start making changes. I wouldn't say I am disappointed, I just expected a circular group. I am heading back to the range this morning to do more testing before I make any changes to the ammo. I mounted a scope to give me a better indication of POA shift. Strange, but when I talked to ransom, they said don't bother using the arm, just pull the trigger with my finger. lol. I will try using the mechanical finger and see if that makes any change and will post results. Yesterday, I went out and shot a 4 1/4" 20 shot group that was a little more circular. Maybe I should just save myself the trouble and get the gun Taylor throated (Mike if are lurking around, this comment was for you). Lee Edited December 13, 2013 by RevolverJockey Link to comment Share on other sites More sharing options...
toothguy Posted December 13, 2013 Share Posted December 13, 2013 Lee, put an Ultradot on that thing and come out and shoot the Bianchi Cup. Link to comment Share on other sites More sharing options...
Intel6 Posted December 13, 2013 Share Posted December 13, 2013 I have had a Ransom Rest for 20+ years and those above covered things well. One thing to add is make sure the gap in the inserts is even with the gun mounted by tightening the 3 knobs evenly. Also after you shoot a few cylinders to settle the gun in the inserts I always check the knobs again in case they loosened up upon settling and will typically give them a quarter turn for good measure. Additionally, I got rid of the trigger pulling linkage years ago and just use my finger to pull the trigger. I found I was wasting a lot of time getting that thing set for all the different guns I would test and have never had any issues with using my trigger finger. Neal in AZ Link to comment Share on other sites More sharing options...
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