+1 on the 6br imp......... They are the cats a$$....... Jim
Accuracy VS velocities
- Thread starter AWLEAPHART
- Start date
+1 on the 6br imp......... They are the cats a$$....... Jim
Tom this has been very interesting to say the least. People there is only one set of numbers you need to know. Here they are. 4" and 2" of you aren't shooting in this range at 1000 in good conditions you aren't winning consistently. I really don't care how you reach this but this should be the goal for all 1000 yard bench rest shooter.
Jim Williams
Not trying to make anyone mad just my opinion
Northridge
Gold $$ Contributor
Jim Williams (powderwagon2)
did you read this? how and what Jack Neary looks for in a 100 yard tune, we would get along great with this man i bet.. reminds me of a local old timer we know.
Shawn Williams
edit: there is a lot of forgiveness in powder charge at 100 yards depending on powder and how it is implemented.
Lol! I suspect we would.
Lol!
Hell Tom you are strong and powerful and handsome long range shooter with a 1000 yard range. So I'd tune it there!
For us poor and down trodden folks that would have to drive 7 hours and can't get in the gate when we arrive to the 1000 yard range. We have to make due with what we have. I never said that the tuning rituals of the Long rangers weren't the best way for 1000 yards. BUT YOU CANNOT TUNE AT A 1000 if you DONT HAVE A 1000. You 1000 yard girls are Mean!
Tommys bullets will be great! You already have them tuned up! Chip Chop chip let's have it!
I'll have you one ready for the 100/200 yard Nats. I'll line my three competition rifles up! You can shoot all three and see which one you prefer. No betting, no badgering, no pressure. I've got two sets of identical reloading gear! Come shoot and hang out! You can register under a alias like John Smith or something! If you want to!
Bart
Alex Wheeler
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You have never met Tom I see.....
X-Caveman
Gold $$ Contributor
Sorry to hijack, but I assume anything goes in this thread... I see 12 twist for the 80gr Dominators in a BRA. Is there a consensus on bore diameter? .236 or .237??? Thanks. Now you guys can have back at it.
I am in... here is my assumption the tuner was turned all the way in and the .002 was turning the tuner outwards.
The groups show a pattern from high to low suggesting the barrel is more alive in group 4 and least in group 8
#4. Worst. the barrel is at the hi point in the tune and is displaying vertical the tuner has not changed the wave of the barrel to believe the bullet has past the crown and free from the barrel.
#6. Best the tuner has positioned itself far enough out the bullet has left the barrel while the barrel has minimal disturbance. The group would need to be 2 1/2 times larger to become worse the either of the other groups.
#4. Vertical for the same reason as described above the barrel is most active of the three positions and already showing vertical.
#8. is an unknown. the tuner has moved the barrel wave near the low point and could be the the best group but i can't tell on three shots. if you would have taken a forth shot it would have either fallen into the first two which could suggest a position change behind the rifle and lots of potential OR fallen in with the single shot which means time to move on.
I will tell you this group 4 and group 8 would have been tested again to confirm.
All the best
Trevor
The groups show a pattern from high to low suggesting the barrel is more alive in group 4 and least in group 8
#4. Worst. the barrel is at the hi point in the tune and is displaying vertical the tuner has not changed the wave of the barrel to believe the bullet has past the crown and free from the barrel.
#6. Best the tuner has positioned itself far enough out the bullet has left the barrel while the barrel has minimal disturbance. The group would need to be 2 1/2 times larger to become worse the either of the other groups.
#4. Vertical for the same reason as described above the barrel is most active of the three positions and already showing vertical.
#8. is an unknown. the tuner has moved the barrel wave near the low point and could be the the best group but i can't tell on three shots. if you would have taken a forth shot it would have either fallen into the first two which could suggest a position change behind the rifle and lots of potential OR fallen in with the single shot which means time to move on.
I will tell you this group 4 and group 8 would have been tested again to confirm.
All the best
Trevor
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Neither Jack nor I use a tuner on our barrels. Thanks for the reply and the analysis. James
Alex Wheeler
Site $$ Sponsor
Ok, I'll take a stab. From what I know most guys shooting the short bullets in a ppc prefer a .237. I prefer a .237 because most popular long bullets are running a little fat. Plus the best barrels I have seen have been 237, so I think they are working with the bullets. I know some guys do prefer a .236" But unless those 80s run skinny I would stay with a 237
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X-Caveman
Gold $$ Contributor
Thanks. My logic was 236 but I can switch the order if need be.
Several of us have shot the Dominators in 237s and 236s. Both seem to work! But if I was buying one barrel. It would be a 237.
Bart
Alex Wheeler
Site $$ Sponsor
I dont know if you will notice the difference to be honest. I have no experience with that bullet so my opinion has little merit.
Hi James
Sorry i was making a predicting on scenario2: should have made myself more clear it used a PDT Ezell Tuner.
Trevor
Sorry i was making a predicting on scenario2: should have made myself more clear it used a PDT Ezell Tuner.
Trevor
dmoran
Donovan Moran
Round 2 --24-hours later; fallow up reply:
Again from July 16th, 2014, a 100/\1000 test with a “shoot through” paper target at 100 yards (non-printed newspaper) and then the final target at 1000 yards (4'x8'). Aiming and shooting at the 100 yard target, with the bullets passing through to the final target at 1000 yards (like I have done at many distances over the years, as many of you know).
Group 4 = 8.282" (vertical = 7.277")
Group 6 = 2.561" (vertical = 2.436")
Group 8 = 6.543" (vertical = 6.128")
6Dasher with a PDT Ezell tuner
3 separate tuner settings, each 0.002" apart, from one same load
With most tuner's, a 0.002" adjustment is a lot, as was the case here, which took the load well off tune (4), to on tune (6), to back off tune (8).
1/4 to 1/2-thousandth adjustments to each side of optimal is typically the extent that one wants to move a tuner from optimal positions, or so has been my experience.
With the tuner off the barrel completely, this load produced very similar accuracy, but felt the tuner gave it a larger window of opportunity to ambient and charge windows. That load and tuner setting was capable of mid to upper-3" 5-shot groups at 1000yds. To get the load to shoot smaller yet at 1000yds, I ended making a small seating adjustment (which hurt its 100yd performance a little vertically). Also very noticeably, small tuner adjustments would not shrink its capability at 1000yds but would at 100yds and at 450yds (another distance I test at).
Used that load and tuner setting for 2014 and 2015 competitions. Then in July of 2016, I switched from RL15 to RL16, which woke it up some and shaved off another +1" of vertical. The optimal 1000yd tuner setting remains the same with both powders, which I feel is very interesting as well.
All for now,
Donovan
Edit -
Below is a picture of all the 100yd tuner setting results for that rifle from that day:
Notice how the Ezell PDT totally repeats every 0.006" of adjustments on that barrel.
Again from July 16th, 2014, a 100/\1000 test with a “shoot through” paper target at 100 yards (non-printed newspaper) and then the final target at 1000 yards (4'x8'). Aiming and shooting at the 100 yard target, with the bullets passing through to the final target at 1000 yards (like I have done at many distances over the years, as many of you know).
Group 4 = 8.282" (vertical = 7.277")
Group 6 = 2.561" (vertical = 2.436")
Group 8 = 6.543" (vertical = 6.128")
6Dasher with a PDT Ezell tuner
3 separate tuner settings, each 0.002" apart, from one same load
With most tuner's, a 0.002" adjustment is a lot, as was the case here, which took the load well off tune (4), to on tune (6), to back off tune (8).
1/4 to 1/2-thousandth adjustments to each side of optimal is typically the extent that one wants to move a tuner from optimal positions, or so has been my experience.
With the tuner off the barrel completely, this load produced very similar accuracy, but felt the tuner gave it a larger window of opportunity to ambient and charge windows. That load and tuner setting was capable of mid to upper-3" 5-shot groups at 1000yds. To get the load to shoot smaller yet at 1000yds, I ended making a small seating adjustment (which hurt its 100yd performance a little vertically). Also very noticeably, small tuner adjustments would not shrink its capability at 1000yds but would at 100yds and at 450yds (another distance I test at).
Used that load and tuner setting for 2014 and 2015 competitions. Then in July of 2016, I switched from RL15 to RL16, which woke it up some and shaved off another +1" of vertical. The optimal 1000yd tuner setting remains the same with both powders, which I feel is very interesting as well.
All for now,
Donovan
Edit -
Below is a picture of all the 100yd tuner setting results for that rifle from that day:
Notice how the Ezell PDT totally repeats every 0.006" of adjustments on that barrel.
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It's in a Kreiger, I don't even worry about that a.0005 on a land I don't see any difference. I would guess it is a .237.... Jim
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