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Post by Richard on Feb 14, 2017 21:01:02 GMT -5
OK, got a brandy new HIS plug from the boss along with a .035” ¼” long bushing and some new modules and am going to play the “single powder” game……………….well, maybe? ? We will see! Got to the range this morning by 6:30 with the temperature a 25* which rapidly moved up into the fifties by mid morning-typical western NC weather. My intent was to try some of the single powder loads others are using with success. The Clays duplexes were turning the ends of the modules to toast! To foul the barrel I dumped 74 gr. of H-4198 in, a veggie wad and a 300 gr. XTP and took aim at a clay bird at 100 yards (forgot to remove the 4 MOA I had put in the last time I was at the range) which I promptly missed! Velocity not great but that is usual with a clean barrel (2471 fps) Although not properly fouled, I did proceed with a five shot group with that load but minus the veggie wad. As you can see in the picture, the first four shots were still fouling and the speed was building but never the less, squeezed out a ½”+ group. The fifth shot was 52 fps higher than the previous four shot average and went up and out of the group to open it up to 1.1”. For group two I used Kyle’s 300 gr. AccuMax with the same 74 gr. of 4198 at 2714 fps with a fairly low 15 fps ES and a sub ½” group. Next up is a duplex I concocted in my head with 40 gr. of 4198 and 40 gr. of 3031 (same 300 XTP)…velocity still in the same range (2713) but a little higher ES-25 fps but still a sub ½” group (NO I did not fudge it to make it sub ½”!) Moving along to a 10/60---N-110/H-4198 duplex with the 300 XTP the velocity went up a little to 2727 but the ES also increased to 35 fps. Here the group went slightly above ½” by .032”. So, back to the single powder and 90 gr. of 3031 with the XTP. Velocity hovered at 2700 fps and ES at 27 and again the group at .565”-----Still in the ballpark! Looking to see if a wad might improve velocity and/or accuracy the next group (same charge and bullet) included a wad. Well, the velocity improved to 2759 fps and the ES was definitely better at 20 fps but……………..the group opened up to 2.3” and missed my POA! Not good! My next thought was………how about adding 10 gr. of N-110 and deleting 10 gr. from the 90 making it a 10/80—N-110/3031. Wow! The velocity jumped up a 150 fps, ES was about the same at 26, POI jumped up 2” and group shrunk to .336”. Now that is what I call an improvement! The thing is, I don’t really need that much velocity? My accuracy range with Clays had been in the 2775 fps range. So………. For the eighth group I went with 5 gr. of N-110 along with the 80 gr. of 3031. Here I saw a big drop in velocity down to 2717 but the ES improved to 11 fps and I had another sub ½” group. What I am thinking now is (next week) to up the N-110 to maybe 7 or 8 gr. and keep the 80 gr. of 3031 and see what happens? I also want to up the 10/60 N-110/H4198 to maybe 10/64 or 65 and see how that plays out. I am hoping the 110/4198 works out as it involves less powder………….But accuracy will be the determining factor. I still had two 10/60 duplexes left and I bummed some N-110 from Herman to make three duplexes (had to do a lot of this stuff on the digital scale at the range) . I put 4 moa on the Sightron 8x32x56 and went to the 300 yard target with the AccuMax. Not really the load I want to shoot Kyle’s bullets with but I had to use what I had? The velocity stayed in the range is originally shot (2719 fps and 16 fps ES). The group was about 2 ½” low (at 2775 it is right on) and just made MOA. For S & G’s I put two shots at the 15” steel silhouette with the 40/40 duplex and the XTP. I up the scope to 5 moa, put the dot on the neck/shoulder and hit just under the steel. Upped that to 8 moa and was about an inch or so high on POA. All in all, a good day and learned a lot about the new system.
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Post by 12ptdroptine on Feb 14, 2017 21:13:11 GMT -5
As allways great to read your post's Drop
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Post by hillbill on Feb 14, 2017 21:36:40 GMT -5
very interesting stuff Richard looks like a .5 MOA or better rig, pretty good for a front loader..
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Post by Deleted on Feb 14, 2017 22:11:10 GMT -5
Interesting read Richard. And what looks like a lot of fun at the range.
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Post by Deleted on Feb 14, 2017 22:16:07 GMT -5
Interesting...3031 with a kick
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Post by schunter on Feb 15, 2017 8:39:45 GMT -5
Excellent report Richard. Some great groups in there as well.
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Post by jimbob on Feb 15, 2017 16:26:23 GMT -5
Very interesting report and some good trigger pulling also "Mr Duplex"
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Post by Richard on Feb 15, 2017 17:32:31 GMT -5
Another important note concerns the velocity of individual shots! By and large...........for the most part..........The lower bullet in the group is lower in velocity and conversely, the highest velocity shot prints the highest. This is why it is important to use a chronograph when load testing. Then you need to figure out how to reduce the ES if you want small groups. If you don't chronograph then you just think the bullet out of the group is you or the wind or whatever? Like I say, this theory is not carved in stone but after all the ML shots I put down range, there is definitely a pattern indicating the above! You might get away with it at closer ranges but it will bite you when it comes to the long shots.
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Post by elkman1310 on Feb 15, 2017 18:13:27 GMT -5
Hi Richard are you starting off with a absolutely clean barrel before you start your tests or a barrel that has been shot before and simply wire brushed a few times to eliminate any powder fouling? You always seem to report that your barrel needs a few fouler shots to get the velocity and accuracy up to the level you want. I just don't experience that in any of the guns I test.
I am currently building a M/L for a customer and this one will have a Brux barrel. My initial inspection showed that the bore was very uniform other than that it felt just them same as my Shilen an Douglas and X-Caliber barrels. I hope this barrel doe not require follower shots to get it to shot. I also don't like the fact that you have to buy a heavy varmint taper to get a 1.250 barrel shank every other barrel I use has a 1.250 even in Sendro taper Brux is 1.200 and when you polish it its less than that not what I care to use. Just my personal opinion
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Post by Deleted on Feb 15, 2017 18:28:59 GMT -5
I'm glad you tried the 40/40 load ....Good shooting and belated Happy Birthday Rich....
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Post by Richard on Feb 15, 2017 20:21:31 GMT -5
Thanks Alan!
Whats your point Carl??? I just put 32 shots thru my barrel and do so almost every week? Is there something wrong with cleaning it? So yes, it does take a few shots to come up to speed??? Just curious as to what building a gun for your customer has to do with this thread?
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Post by elkman1310 on Feb 15, 2017 20:37:52 GMT -5
Richard nothing wrong with a clean barrel but why do it if it's going to take a few shots to get it back to a fouled condition where it shoots best simply wire brush the barrel a few times. Since your using a Brux barrel I mentioned that I am also using one for this build. Nothing more than that. All I did was point out that the barrel shanks are smaller on a Brux unless you go to heavy varmint barrel some readers just might to know that fact. So Happy birthday.
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Post by doug136 on Feb 15, 2017 21:16:22 GMT -5
I think we have 2 wise older men that are a little stuck on their beliefs . Mr Duplex and Mr Button rifling ! Lol just kidding with you guys ! You both have have forgotten more than I'll ever learn . I love to read anything written by either one of you guys ! Happy Birthday Richard and as always thank you for your reports .
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Post by Richard on Feb 16, 2017 10:04:03 GMT -5
Doug........agreed, we do have some differences of opinion. (Elkman is a very smart guy....but does not have a "corner" on the market either!) But more importantly as a moderator (and I have talked with Hank) we try to keep a thread on its original track. A new idea or topic should be started on a separate thread.
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Post by doug136 on Feb 16, 2017 13:07:08 GMT -5
Gotcha , like I said before I respect very much what both of you have to say . Nice shooting by the way . It's not easy to shoot .5 group or less over and over !
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Post by Richard on Feb 16, 2017 17:09:59 GMT -5
I have given Elkman some pointers ...........he's gettin' there!
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Post by doug136 on Feb 16, 2017 21:39:53 GMT -5
Lol nice !
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Post by 153 on Feb 18, 2017 10:10:02 GMT -5
Great shooting Richard. As far as you and Elk I respect both of y'all. I think he was trying to make a point as to safety I think. Richard has always been helpful and knowledgeable in all the questions I have ask through a bunch of personal messages. Elk has taken two of my ML that with terrible breach plugs, blowback, stuck primer problems and made excellent guns out of both. Maybe get some medical weed and smoke a peace pipe.
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Post by Richard on Feb 18, 2017 20:29:47 GMT -5
We have no problem? We often bust each other gonads on e-mails. We also speak on the phone. This is just idle chit chat.
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Post by 12ptdroptine on Feb 18, 2017 20:42:26 GMT -5
We have no problem? We often bust each other gonads on e-mails. We also speak on the phone. This is just idle chit chat. Richard is right. Ugly don't reside here. Drop
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