Post by Richard on Oct 20, 2015 20:39:41 GMT -5
35 degrees and clear with no wind.
.45 Rem./Brux sabot less. All bullets one hand seating.
My intention today was to replicate what I shot last week . I wanted to see if the barrel heating slightly would lower the velocity and raise the group. Due, I think, to the colder temperatures this morning (last week 60*) it did not happen. When I shot the very first shot from the cold clean barrel I could hear the sound of a shot not up to par. The velocity was only 2464 fps and should have normally generated 2850 or so, FPS! It impacted two inches high. I chalked that one off for what it was and went on to another “dot” on the same bull. While the first shot was slightly wide right, the elevation and velocity were where it should be………2867 fps. The next two shots cut each other and gave a .875” group (250 FTX with 10/60 Clays/H-4198 and veggie wad). I continued on but used another dot on the next bull…………Same POI but this time a .385” group…….better! Av. Velocity for all six shots was 2865 with a 15 fps ES.
I think the test did not mimic last weeks was the barrel never heated up much?
Next up I shot a duplex with the same bullet and substituted RE-7 for the H-4198 as I had not shot the Reloader in quite some time. Same amounts………..10/60, this way it would show a direct comparison shot at the same time and temperatures. Low and behold, the accuracy was the same but the velocity dropped by about 86 fps. Still a good load!
Moving on, I went with the 250 TEZ and the same 10/60---Clays/Re-7. Again, the velocity was down similarly but the ES was excellent at 12 fps. The group on the other hand was not.
For comparison, I shot the 250 TEZ with 10/60….Clays/H-4198 and the velocity went back up, the ES was pretty good at 18 fps but again, the groups was not!
So, the FTX’s out shined the TEZ’s with both combinations.
Moving out to 300 yards and putting 4 MOA onto the scope that was shooting ¾” high at 100 yards I again went with the 250 FTX’s and 10/60 Clays/H-4198. Nothing here to write home about but if centered, would still be “deer good” at 300.
For group 7 I substituted the 300 SST with the the same load as above but added ½ MOA. It was still a couple of inches low and moved even more out to the left. Four of the five shots were pretty respectable at 1.9” but how shot #4 got up into the left bull…………..
? Did not feel it was on my part but who knows?
For my last group I used the same 300 gr. SST but went with a straight load of 72 gr. H-4198 AND, decided to light it up with a CCI MAG. primer! Of course after the first shot, I had a one holer going! But……………….MY very first stuck primer in over 700 shots all using Win. 209’s??. Three quarters of one side on the primer was black. OK, so fire #2……….it hits 1 ¼” below……..Nice! AGAIN, stuck primer?............So I fire #3 and it hits a little lower and further left for a 2.5” spread! And AGAIN, a stuck primer! So, it is the primers fault or the straight powder load? For shot #4, I go back to the Win.209 and the shot hits the “dot” at the same velocity as with the CCI’s and NO stuck primer. The same with shot #5. I had noticed that the CCI’s went into my BP with less resistance. Whenever I had fired those CCI’s in the past in my other ML’er they always got blackened on one side. So what have I learned?....................Don’t shoot CCI’s as they do nothing for your velocity, accuracy and they get stuck!
Here is another point to ponder. If you look at the holes in that target you will see they are noticeably blacker than the others? I normally highlight around the circumference of the bullet holes since they show up better in the pic’s. The holes on that bull did not really need any blackening. (whether the ones with the CCI’s or the Win. 209’s) What I am thinking is this: The duplex loads cause the 4198 to burn better and hence, less soot on the bullet when it exits the muzzle. Also, if you look at the velocities for the single powder load with 2 more total grains of weight and compare to the duplex, the duplex is faster. So, “More bang for the buck!” I will shot it some more for the accuracy aspect of it.
Got some Parkers coming from Luke to shoot next week.
free upload image
click image upload
.45 Rem./Brux sabot less. All bullets one hand seating.
My intention today was to replicate what I shot last week . I wanted to see if the barrel heating slightly would lower the velocity and raise the group. Due, I think, to the colder temperatures this morning (last week 60*) it did not happen. When I shot the very first shot from the cold clean barrel I could hear the sound of a shot not up to par. The velocity was only 2464 fps and should have normally generated 2850 or so, FPS! It impacted two inches high. I chalked that one off for what it was and went on to another “dot” on the same bull. While the first shot was slightly wide right, the elevation and velocity were where it should be………2867 fps. The next two shots cut each other and gave a .875” group (250 FTX with 10/60 Clays/H-4198 and veggie wad). I continued on but used another dot on the next bull…………Same POI but this time a .385” group…….better! Av. Velocity for all six shots was 2865 with a 15 fps ES.
I think the test did not mimic last weeks was the barrel never heated up much?
Next up I shot a duplex with the same bullet and substituted RE-7 for the H-4198 as I had not shot the Reloader in quite some time. Same amounts………..10/60, this way it would show a direct comparison shot at the same time and temperatures. Low and behold, the accuracy was the same but the velocity dropped by about 86 fps. Still a good load!
Moving on, I went with the 250 TEZ and the same 10/60---Clays/Re-7. Again, the velocity was down similarly but the ES was excellent at 12 fps. The group on the other hand was not.
For comparison, I shot the 250 TEZ with 10/60….Clays/H-4198 and the velocity went back up, the ES was pretty good at 18 fps but again, the groups was not!
So, the FTX’s out shined the TEZ’s with both combinations.
Moving out to 300 yards and putting 4 MOA onto the scope that was shooting ¾” high at 100 yards I again went with the 250 FTX’s and 10/60 Clays/H-4198. Nothing here to write home about but if centered, would still be “deer good” at 300.
For group 7 I substituted the 300 SST with the the same load as above but added ½ MOA. It was still a couple of inches low and moved even more out to the left. Four of the five shots were pretty respectable at 1.9” but how shot #4 got up into the left bull…………..
? Did not feel it was on my part but who knows?For my last group I used the same 300 gr. SST but went with a straight load of 72 gr. H-4198 AND, decided to light it up with a CCI MAG. primer! Of course after the first shot, I had a one holer going! But……………….MY very first stuck primer in over 700 shots all using Win. 209’s?
?. Three quarters of one side on the primer was black. OK, so fire #2……….it hits 1 ¼” below……..Nice! AGAIN, stuck primer?............So I fire #3 and it hits a little lower and further left for a 2.5” spread! And AGAIN, a stuck primer! So, it is the primers fault or the straight powder load? For shot #4, I go back to the Win.209 and the shot hits the “dot” at the same velocity as with the CCI’s and NO stuck primer. The same with shot #5. I had noticed that the CCI’s went into my BP with less resistance. Whenever I had fired those CCI’s in the past in my other ML’er they always got blackened on one side. So what have I learned?....................Don’t shoot CCI’s as they do nothing for your velocity, accuracy and they get stuck!Here is another point to ponder. If you look at the holes in that target you will see they are noticeably blacker than the others? I normally highlight around the circumference of the bullet holes since they show up better in the pic’s. The holes on that bull did not really need any blackening. (whether the ones with the CCI’s or the Win. 209’s) What I am thinking is this: The duplex loads cause the 4198 to burn better and hence, less soot on the bullet when it exits the muzzle. Also, if you look at the velocities for the single powder load with 2 more total grains of weight and compare to the duplex, the duplex is faster. So, “More bang for the buck!” I will shot it some more for the accuracy aspect of it.
Got some Parkers coming from Luke to shoot next week.
free upload image
click image upload
