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Post by Magload Tue Jun 26, 2018 5:36 pm

I received my new RO 38 Super that KC built for me this last weekend.  KC put a great rail on it that has a built in slide racker I really like.  I now have to develop a load for this gun.  I know there is a lot of loads listed on this site but feel a load has to match the gun.  The load I was using in my RI 38 Super with irons was a Dardus 125gr RNFP with 3.4grs of BE.  Nice load and it cycled that gun and shot good groups, but KC didnt think it would cycle this gun with the rail and a Matchdot II sitting on top of the slide and he recommended a Aimpoint H1.  A course he was right as I had a fail to eject every shot.   Came home and bumped the load to 3.4 BE and put a Fastfire II on plus 2 30mm scope rings in front of it.  This just happened to give me the same weight as a H1.  Looked weird but I could still work on loads while waiting for the H1 I ordered.  Well 3.4 BE ejected but didn't lock back on last round.  Loaded up 3.6 and 3.8 and installed the new H1 today.  3.6 is working fine but I am not happy with the group.  I know groups at 20yds don't mean much but if it don't group at 20 real tight it sure isn't going to get better at 50yds.  Going back tomorrow with 3.6, 3.7, 3.8, and 3.9  for a start.  I want one hole at 20yds with 5 shots off the rest.  BTW what a great job KC did on this gun she is really tight and the new trigger is way better then my installs I had but in two guns using the same trigger.  Next it will be RR testing at 50yds and LabRadar test on the load I decide to use.  I enjoy this as much as I enjoy shooting.  Don
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Post by jglenn21 Tue Jun 26, 2018 7:25 pm

we shoot the 126 SWC Dardus in our Supers.

3.6-3.8 BE with slide mounted UD dots

we do run light recoil springs
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Post by Magload Wed Jun 27, 2018 5:42 am

jglenn21 wrote:we shoot the 126 SWC Dardus in our Supers.

3.6-3.8 BE with slide mounted UD dots

we do run light recoil springs
KC said he put a 9lb recoil spring in this gun.  Are you running lighter then that?   It sure looks like 3.6-3.8 is going to do it.  I will more results today.  Depends on which of those three gives the best groups.  I have watched groups tighten up in other calibers then the next tenth of a grain start opening up.  There is a sweet spot for each gun and it will be interesting to fine this one as I have two 38 Supers a RO and a RI.  Will they buth like the same load well that is to be seen.  The RI is stock with no work except the KC trigger I put in.  Don
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Post by bruce martindale Wed Jun 27, 2018 6:00 am

Why didn't you go with a frame mount? Especially for light calibers.

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Post by jglenn21 Wed Jun 27, 2018 6:24 am

Actually most of the pistols run a 8lb spring with several coils cut off. I thought we were going to have lockup issues and poor LL results but not true.

If you run a 9lb try a 145-147 lead bullet with 3.0 BE or 3.2 of WST.


Last edited by jglenn21 on Thu Aug 09, 2018 6:57 am; edited 1 time in total
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Post by Magload Wed Jun 27, 2018 7:32 am

jglenn21 wrote:Actually most of the pistiols run a 8lb spring with several coils cut off. I thought we were going to have lockup issues and poor LL results but not true.

If you run a 9lb try a 145-147 lead bullet with 3.0 BE orn3.2 of WST.
I will give that a try also next time I order bullets. Thanks  Don
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Post by dronning Wed Jun 27, 2018 9:34 am

What twist barrel?  The .38 Super KC did for me I decided to try a 1-10 twist 6" barrel, based on some work Jerry Keefer was doing at the time.  I have a frame mount optic and I'm currently loading either the Dardus or Magnus 147gr RNFP with 2.8gr of WST.  Very soft shooting and getting great results!  

Testing some 126 Dardus SWC coated with 45-45-10 today, I was getting leading without it.
- Dave
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Post by Magload Wed Jun 27, 2018 10:08 am

bruce martindale wrote:Why didn't you go with a frame mount? Especially for light calibers.
Because I have two frame mounts and don't like them.  At 3.7grs of BE today the gun cycled fine and locked back after the last round.   Sure i would like to shoot 3.2 loads but don't mind the 3.8 I finished up with today.  3.8 grouped tighter then 3.7 so tomorrow I will try 3.9 and 4.0.   Don
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Post by Magload Wed Jun 27, 2018 10:13 am

dronning wrote:What twist barrel?  The .38 Super KC did for me I decided to try a 1-10 twist 6" barrel, based on some work Jerry Keefer was doing at the time.  I have a frame mount optic and I'm currently loading either the Dardus or Magnus 147gr RNFP with 2.8gr of WST.  Very soft shooting and getting great results!  

Testing some 126 Dardus SWC coated with 45-45-10 today, I was getting leading without it.
- Dave
Dave he put the 1-10 5" in this gun I will find out what she like soon.  This is the fun part of getting a new gun.  A good gun is like a good woman you got to find what they like.  Don


'
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Post by jglenn21 Wed Jun 27, 2018 10:47 am

With 1-10 I'd try the 147s.

Dave, we're having to coat ours too. Not a big fan of his lube but bullets are great.
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Post by dronning Wed Jun 27, 2018 11:02 am

jglenn21 wrote:With 1-10 I'd try the 147s.

Dave, we're having to coat ours too. Not a big fan of his lube but bullets are great.
Do you just coat over his lube or do you remove his lube first?


Last edited by dronning on Wed Jun 27, 2018 11:02 am; edited 1 time in total (Reason for editing : clarity)
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Post by jglenn21 Wed Jun 27, 2018 11:37 am

I just coat over.. lazy but it works
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Post by Magload Wed Jun 27, 2018 12:39 pm

I was coating them also but was out of coated and in a hurry to get these test loads down range.  Don
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Post by Magload Fri Jun 29, 2018 10:24 am

Well found out what I needed to know today at the range.  Starting with the 3.6gr of BE that cycle the gun well and stepping up a tenth of a grain at a time I found 4.0grs produced the tightest group of a rest at 20yds indoors.  I hoped to load lighter then that but as the charge went up the size of the size of the group went down.  4.0 gave me one small ragged hole so I stopped there.  This is no proof that the load will shoot at 50yds but with felt temps in the low 100s that can wait till later.

I found one other thing while conducting this test today.  Shooting bench rest groups I have always used the pad of my finger and had not been seeing any movement of the dot during the squeeze or the break but thinking about it I moved to the crease with the trigger against the bone and all groups tighten up a lot.  I know how I will be shooting everything from now on.  Don
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Post by dronning Fri Jun 29, 2018 11:19 am

Don, were you testing the 126 Dardus bullets with 4.0gr of BE?  I ask because I wasn't getting as good of groups with them verses the 147's BUT I stopped at 3.5gr of WST.  If you were testing the 126's I may have to load some up a little stiffer (3.8-3.9) and retest.
- Dave
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Post by Magload Fri Jun 29, 2018 1:03 pm

Yes Dardas Cast RNFPBB  125gr .357   If I am not wrong 3.5 of WST is like 3.3 of BE.  My new gun didn't lock back till 3.7gr of BE but 3.8 did.  The loads didn't group well till 3.9 and I was impressed with the group at 4.0.  I don't know if 4.1 would have been even better I will check that when I do RR testing this fall.   At some point as the charge increases they will start opening up again.  Right now I am happy where I have them.  I would like to shoot wadcutters but these RNFPs and feeding 100% of the time.  I will try 147s later.  Don
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Post by dronning Fri Jun 29, 2018 2:11 pm

Is this the bullet your using listed under .38 on the Dardus site?
125gr BBRNFP
The fun starts now. 38125RNFPBB

I may have to give that one a try.
Frame mount here so I can get by with very light loads, but I still have to push them fast enough to be accurate.
I'm (re)testing the 126gr flat base SWC, it showed promise but I abandoned testing last fall because the 147 ran great.  I like that you can order different diameters because I got a lot of leading with .356 bullets but almost none with .357 diameter.  I also tried a 150gr BBSWC .357 and didn't get good results but I only tried a couple of loads.  I was trying to duplicate my 52-2 recoil for indoor winter leagues.  The .357 147gr BBRNFP with 2.8gr WST was really close.
- Dave

Here is the 126gr FBSWC & the 147gr BBRNFP
                 The fun starts now. 9126SWC-1                      The fun starts now. 9mm147RNFP

I'm looking for an even softer short line load,
so I'm also considering:
122gr FPBB       124gr RNBB       125gr RNBB - there is a slight step verses the 124gr so it may make cleaner holes
The fun starts now. 9mm%20Caliber%20122%20Grain%20Flat%20Point         The fun starts now. Untitled       The fun starts now. 9mm125RNBB
Images were linked in from Dardus site
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Post by Magload Fri Jun 29, 2018 4:47 pm

That is the bullet I am using in .357 dia.  I would like to find a DEWC or HBWC but that is for future testing.  Don
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