i just did a ladder test on a 260. 15 shots fell within 1 moa vertical @ 250 yds. my windage was 2.5moa what now?
using nosler brass, 130 vdl bullet, h4350 powder
using nosler brass, 130 vdl bullet, h4350 powder
260 load development question
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Re: 260 load development question
What's the velocity,es,sd?
These are the thing you need to look for when doing load development. Just shooting small groups at 100,200yrds won't tell you what the load is doing. You need to find out what the velocity and ex-stream spread and standard deviation is of each group in the ladder is.
What's the velocity,es,sd?
These are the thing you need to look for when doing load development. Just shooting small groups at 100,200yrds won't tell you what the load is doing. You need to find out what the velocity and ex-stream spread and standard deviation is of each group in the ladder is.
Re: 260 load development question
i have not shot the same load 2x yet so i haven't tested deviation
i have not shot the same load 2x yet so i haven't tested deviation
Re: 260 load development question
A chrono should be used while doing a ladder test. The shot pattern will show a accuracy node (each bullet hole should be marked) and the velocities will be close. On the upper end velocity gains will diminish, that will be the max load for that rifle. Where the accuracy node is (for 3-4 shots) load up 5 with each load and shoot groups over the chrono. Take the load with the lowest E/S and SD. and load 10 and shoot at 500 yards or more. If the load shoots to your expectations you're done.
Remember velocity isn't everything.
A chrono should be used while doing a ladder test. The shot pattern will show a accuracy node (each bullet hole should be marked) and the velocities will be close. On the upper end velocity gains will diminish, that will be the max load for that rifle. Where the accuracy node is (for 3-4 shots) load up 5 with each load and shoot groups over the chrono. Take the load with the lowest E/S and SD. and load 10 and shoot at 500 yards or more. If the load shoots to your expectations you're done.
Remember velocity isn't everything.
Re: 260 load development question
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Dallas12</div><div class="ubbcode-body">What are you trying to do by shooting one round of each load? </div></div>
by shooting one of each load i ment one of each powder charge. i was shooting over a chrono.
it is a bullet problem i had some 142smk bullets i use in another rifle. i loaded 5rds @43 gr (medimum charge) sohot them into a 1 inch group at 230yds. i just need to find a hunting bullet that acts like the 142 smk. i defintally know the 10vdl is a no go in this rifle
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Dallas12</div><div class="ubbcode-body">What are you trying to do by shooting one round of each load? </div></div>
by shooting one of each load i ment one of each powder charge. i was shooting over a chrono.
it is a bullet problem i had some 142smk bullets i use in another rifle. i loaded 5rds @43 gr (medimum charge) sohot them into a 1 inch group at 230yds. i just need to find a hunting bullet that acts like the 142 smk. i defintally know the 10vdl is a no go in this rifle
Re: 260 load development question
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: shootist2004</div><div class="ubbcode-body">windage doesnt matter in this test. </div></div>
true, but any time my windage is 6.5 inches on a calm day at 250 yds there is a problem somwhere. im not a great shot but im alot better than that
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: shootist2004</div><div class="ubbcode-body">windage doesnt matter in this test. </div></div>
true, but any time my windage is 6.5 inches on a calm day at 250 yds there is a problem somwhere. im not a great shot but im alot better than that
Re: 260 load development question
i will try and get pics tomorow. i ordered some 140 amaxes a few minutes ago im hoping they dont need to be as close to the lands as the 130 vlds did
i will try and get pics tomorow. i ordered some 140 amaxes a few minutes ago im hoping they dont need to be as close to the lands as the 130 vlds did
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