New 6x47L - I like it!
- Thread starter kombayotch
- Start date
Thanks!
RL-26 is slow, but the kernels are very small. I packed 45 gr. into the little x47 case and it got the 105 Hybrid up to 3200 fps. when I was breaking in the first barrel. Have some RL-23 as well that I will also try with the 115s.
I haven't shot any 115s in the 6x47L. I have in my 6mm Crusader, and have shot the Matrix Ballistics 117 VLDs. I blew up half of the old Matrix bullets when I first tried them. Then Marshal changed the bullet jacket to a thicker one that was also longer. This resulted in a longer ogive with a very tiny metplat. Shooting it in a round robin with the 115 DTAC and measuring the velocities and difference in impact, I calculated the BC of the new Matrix 117 VLD to be around 0.620.
I don't bother chronographing anything for the first 200 rounds unless it's a new cartride or I'm playing with some new components or powder. Barrels speed up a lot in the first 200 rounds, so there isn't much point until they settle if you're sticking with the same bullet and powder.
RL-26 is slow, but the kernels are very small. I packed 45 gr. into the little x47 case and it got the 105 Hybrid up to 3200 fps. when I was breaking in the first barrel. Have some RL-23 as well that I will also try with the 115s.
I haven't shot any 115s in the 6x47L. I have in my 6mm Crusader, and have shot the Matrix Ballistics 117 VLDs. I blew up half of the old Matrix bullets when I first tried them. Then Marshal changed the bullet jacket to a thicker one that was also longer. This resulted in a longer ogive with a very tiny metplat. Shooting it in a round robin with the 115 DTAC and measuring the velocities and difference in impact, I calculated the BC of the new Matrix 117 VLD to be around 0.620.
I don't bother chronographing anything for the first 200 rounds unless it's a new cartride or I'm playing with some new components or powder. Barrels speed up a lot in the first 200 rounds, so there isn't much point until they settle if you're sticking with the same bullet and powder.
Zeroed for the PNTC match this morning.
Zeroing group (includes cold bore, rifle already fouled). Aiming points are 1/2" dots:
This is the 1-7 twist barrel with 299 rounds on it prior to this. 105 Hybrid, 39.7gr. H4350, CCI450 Primer, once fired brass (not turned).
Zeroing group (includes cold bore, rifle already fouled). Aiming points are 1/2" dots:
This is the 1-7 twist barrel with 299 rounds on it prior to this. 105 Hybrid, 39.7gr. H4350, CCI450 Primer, once fired brass (not turned).
Put on the original 1-7.5 twist 26" medium palma barrel and started doing some load work-up with 115 DTACs and a few powders. The results are pretty promising. Was nearing 1100 rounds on the barrel when I started this test. 105 hybrids had slowed down in the barrel and weren't shooting that great anymore.
These were all at 400 yards off a Harris. Wind started to kick up as the test progressed.
My conclusion is that 115 DTACS work well in the 6x47L. I could easily get them up to 3100 fps with RL-26 and close to that with RL-23. Should be able to get over 3150 fps. with a new barrel. RL-23 seems to be the most consistent and gives the lowest SDs. Brass hasn't been annealed in 3 firings, so I think they could be better.
I would like to try some N150 and N160 with these as well.
These were all at 400 yards off a Harris. Wind started to kick up as the test progressed.
My conclusion is that 115 DTACS work well in the 6x47L. I could easily get them up to 3100 fps with RL-26 and close to that with RL-23. Should be able to get over 3150 fps. with a new barrel. RL-23 seems to be the most consistent and gives the lowest SDs. Brass hasn't been annealed in 3 firings, so I think they could be better.
I would like to try some N150 and N160 with these as well.
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