Home Forums Hunting & Shooting Long Range Hunting Ladder test, How, why?

So you are the reason why I couldn't find any OTMs for hunting last fall.
Hoarder!

You might want to get the calipers out and recheck those groups....

They just made a new batch. Bought 1800...






I went full Carpenter with the tape... Hate to piss people off with thousandths of inches...

New Lot of H-4350, so a ladder was needed...

6.5 Creedmoor, H-4350, 139 Scenar seated .015" off the lands.

Shot at 600 yards...



Loads 41.9, 42.2, 42.5, 42.8 and even 43.1 formed a huge node. Ejector mark at 43.1


Load 42.2 and 42.5 went into the same hole before the wind stopped. I went with 42.5 as the middle of the accuracy node and shot a 4 shot group at 600...





Pretty obvious that this was the load. Decided to shoot the last 5 I had charged at 100 to see how it shot...




No seating depth adjustments needed



To summarize:

7 shots to find the node and choose the load.
4 shots at 600 to confirm
5 shots at 100 to confirm depth.


16 shots to a Bad Ass Long Range load to be completely confident in.

Rick did you shoot the US Open? I didn't notice your name but I scrolled thru pretty quick.

Out shooting ladders.... cause he can't shoot pool.... table is occupied...

KFPRO High School Football Rules

Nope. Haven't shot any Sporting for a few years now. Rifles have my attention. Been doing really well at quite a few shoots.





LOL!

Dubai 2015 Nad Al Sheba World Sporting isn't enough to lure you back in? First real payout in sporting. I know Gebben is smiling now.

Yep. I talked to him after I read the magazine. Unreal payout! I still remember the time he drove to Albuquerque at 16 years of age with 2 traps in the back of the truck to practice with me. Unbelievable talent.

Got Node?

16 rounds can tell you a lot.

Powder starts at 64.1 and goes to 66.2 in .3 increments, should have did this a year and half ago when this thread was started.

This was at 300 yards, slight wind left to right.

65.3 wins all.


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Here's one without a node fired from my 6.5SLR. The case duplicates the .264 Win Mag. The loads consist of Nosler ABLR 142, RL33 sparked by a CCI250 Magnum primer. They went from 65.0 to 69.5 by .5 grain increments. They centered 22" below the circle. Total waste of time except to know I wont try this again.



I also fired five Nosler ABLR 129 using IMR7828 loaded to 68.0 grains. These also used the CCI250 Magnum primer.

The reason I tried the 142 is because I wanted a little heavier bullet. Sometimes good enough is.

Shoot 5 shot groups with #2 and #3

1 through 4 is a node, Ring.




shoot groups will those 4 loads to see which one shoots best. Take that load and adjust seating depth if necessary

rcamuglia,

Thank you, sir, for the education. I didn't see anything, but it is there now that you pointed it out. It was there all the time. I just didn't see it.

Ring

On a ladder test don't worry about horizontal differences. Your looking for the shots with the least vertical and then retesting those. I bet the results might surprise you once you load your retest.

Why ignore horizontal difference?

[quote=Ringman]Here's one without a node fired from my 6.5SLR. The case duplicates the .264 Win Mag."


I'm sure you know, but there already is a cartridge that goes by 6.5slr based on a 243 win case that's been around for years. In case you don't want to add confusion to your round.

Usually I shoot my ladders at a minimum of 300 and mostly 500 or further. Reading the wind and getting a constant wind or even consistent direction is tough. Also a ladder test is based off the harmonics of the barrel and finding that sweet spot which is why when you find the shots that have the least vertical then you retest for group size within the given node and fine tune from there. This is just how I start my tests. Others may do it different.

NMpistolero,



Never heard of it before the other day when one of our .com friends told me what you are telling me. I have no idea what the slr in 6.5slr stands for. SLR in 6.5SLR stands for Sue Loves Rich and doesn't hassle him about his wildcats. I had a dozen prior to this one and one after this one. The reason for this one is to fit the twenty-six ounce six lug Weatherby Mark V action; which was made around the .30-06. The bolt and rails were opened up to fit the .030" larger 9.3X64 Brenneke case head.

I realized I didn't give a distance for the 142 grainer ladder test and group. The ladder test was 400 yards. The wind came up and knocked the stand over so I leaned it against a tree at 410 yards for the 129 grainers.