Neck Tension Testing

[trailrider121]

Lots of great advise with wind conditions and testing. I'm always learning something from this site. I got myself a roll of 1" ribbon tape , and plan to use it on my next outing.

Seymour, My groups were triangle with 2" vertical. The best were .019" -.025" off the lands were horizontal 1/2"-1". I have a good node from 60.7- 61.6grs H1000. I recall now while testing I had a tailwind maybe 2-3mph. I can now understand how the wind flags would have help me understand what the wind was doing. It's damn hard to get a day without wind, and I'm sure goes for everyone... Thanks for all the tips, and will makes some adjustments during testing.

 

[Toby Bradshaw]

Good luck, and once you have some experience reading your flags, enjoy the feeling of having the wind blow the bullet INTO the group for a change. ;D

 

[Joe Salt]

How Many of you Ever shot at the PA. 1000 Yard range? If you haven't you don't know what a let up is or when the wind is blowing Diagonal away from you but when you see the dust fly from the hit and its going left or straight up and you're in the middle of the ten ring, but when your record target comes back and everyone went left in the 8 or 9 ring what did you all miss. And yes we have a number of flag at all different ranges. What I would like to try are some Smudge pots that let out colored smoke at different ranges. I think then and only then would you really see what's happening!

I know there Smudge pot out there but I think the cost is High.

Joe Salt

 

[dragman]

PA wind is horrible! Lol

 

[seymour fish]

Trail, With that good an ES, and 2" of vertical, and a triangle-shape, and assuming you are roughly in the middle of your 100 yard node, I would 1) tweek the powder charge in half a tenth increments, tweek the neck tension, re-visit seating depth and don't be afraid to go Into the lands if you haven't yet (seems to over-ride vagarities of neck tension by burying all that in the noise floor). You should find a combo that has a lower ES and much tighter accuracy. Bipod placement on the forend, thus Balance is important. Same for placement on the front bag. Many systems need weight in the butt. consider that , assuming you could still make weight. Read everything J O'Hara has ever written. If you are holding the gun, pay exquisite attention to cheek pressure, find a pressure you can duplicate when the pressure is on, not what seems to work when just fiddling around. Dial to that for elevation zero's. Make it repeat day to day. Tail-winds can produce plenty vertical, but generally not at the speed you mentioned. Mirage can easily at times when the bull is moving and you cant determine its true position, but you didn't mention such. If its the load, you can tune it efficiently. If you, an airgun is your friend, if set-up a rimfire will quickly verify this business is real. Seymour p.s. : I read it all on the internet.

 

[dkhunt14]

A big thing that I didn't see mentioned is, did you make sure the parallax is out of the scope. Bob your head up and down and left to right and make sure the crosshair isn't moving. This can really open up groups especially when the distance gets longer. I also seem to favor more neck tension. I think it helps to even things out especially for long range. Bullet seating depth can really change groups. I prefer 5 in the lands with a lot of bullets. Matt

 

[dragman]

A big thing that I didn't see mentioned is, did you make sure the parallax is out of the scope. Bob your head up and down and left to right and make sure the crosshair isn't moving. This can really open up groups especially when the distance gets longer. I also seem to favor more neck tension. I think it helps to even things out especially for long range. Bullet seating depth can really change groups. I prefer 5 in the lands with a lot of bullets. Matt

+1 on the parallax! Had a Leupold on time I had to send back just couldn't get it right wasn't horrible @ 100 but you defiantly could tell it had an effect.

 

[trailrider121]

Went out today to my buddies work and did some testing. Put up wind flags, and was a steady light breeze of 2mph going left to right. Target was set at 385 yards. All shots felt great great. My fouling shots were the best on , go figure!

Three shot groups.Just want see whats it's doing. I'm just going to load the .003" load and go have fun. Just wanted to share my results. BTW parallax is good.Thanks for all the tips.

Top Left : .004" neck tension / Speed 3122, 3018, 3122 / Group 3.75"
Top Right: .003" neck tension / " 3122, 3122, 3129 / Group 2.75"
Middle: .002" neck tension. " 3086, 3122,3129 / Group 3.75"

 

[seymour fish]

Trail, the .003 neck tension triangle looks good. Should tighten up to sub-1" with seating depth test. Don't wimp out now, dude. Seymour

 

[UltraBR30]

Went out today to my buddies work and did some testing. Put up wind flags, and was a steady light breeze of 2mph going left to right. Target was set at 385 yards. All shots felt great great. My fouling shots were the best on , go figure!

Three shot groups.Just want see whats it's doing. I'm just going to load the .003" load and go have fun. Just wanted to share my results. BTW parallax is good.Thanks for all the tips.

Curious, what was the neck tension of the fouling shots that went the best?
All sounds good! Especially your use of flags!
Philip