Range Report Isn't 375yds enough for a ladder?
- Thread starter mnhntr
- Start date
I don't see the point of ladder tests. I just load the max amount of powder that groups acceptably. (I'm looking for 0.50 MoA)
The max amount of powder is determined by when pressure signs start showing. At that point, you have the flattest possible trajectory, and if it groups well - DONE.
The max amount of powder is determined by when pressure signs start showing. At that point, you have the flattest possible trajectory, and if it groups well - DONE.
What caliber and powder are you testing?
I've never seen a good benefit to the ladder tests. With all these results so close I think it's a good thing. Gives a lot of room wiggle room. I'd focus on the groups from here.
I've never seen a good benefit to the ladder tests. With all these results so close I think it's a good thing. Gives a lot of room wiggle room. I'd focus on the groups from here.
). I see some results there, assuming no human factor. I'd say your sweet spot is the 42.6-42.9 range.I just shot some charges out of my Remington 260(Krieger 8.5 twist-freebore .060 over saami spec), just breaking the barrel in, but i did load different charges under 140 amax it appears that I'll want to work on 42.9-43.5gr of h4350. I started to have heavy bolt lift at 43.8 and very erratic vertical stringing with 44.1. I'll assume i can put just a tad more powder in mine before pressure signs, given the longer freebore. I loaded 2.850 for a .015 jump to the lands. The amax's definitely like a little jump.
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I was editing while you were typing, lol
What was your oal?
In that pic i posted my groups started tightening up at 42.9(upper right, .391 MOA even with the called flier- 4 shots were .185) and stayed reasonably tight for 43.2 (upper left) and 43.5(9o'clock).
Fwiw, the two 12o'clock groups were 43.5 also and 43.8 but loaded to the lands at 2.865. Notice the vertical stringing yet again. So make sure you've got a decent jump - .015-.025...
What was your oal?
In that pic i posted my groups started tightening up at 42.9(upper right, .391 MOA even with the called flier- 4 shots were .185) and stayed reasonably tight for 43.2 (upper left) and 43.5(9o'clock).
Fwiw, the two 12o'clock groups were 43.5 also and 43.8 but loaded to the lands at 2.865. Notice the vertical stringing yet again. So make sure you've got a decent jump - .015-.025...
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Was editing again!
What barrel are you running that your having a hard time with? Every barrel/chamber is going to be different. Other than slightly heavy bolt lift I'm still not showing pressure on the brass at 44.1 but it's not worth it to me to go over book to find another node. I'll be happy with 42.9-43.8 do long as mv stays consistent...
What barrel are you running that your having a hard time with? Every barrel/chamber is going to be different. Other than slightly heavy bolt lift I'm still not showing pressure on the brass at 44.1 but it's not worth it to me to go over book to find another node. I'll be happy with 42.9-43.8 do long as mv stays consistent...
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