ladder test help analyzing please

[ubet]

I was looking for advice. I had followed tresmons post on ladder testing. I had done a primary test of 168 hornady hpbt and 155 amaxs both with varget and rl15. Then with the 168s did a two grain increment from 43-44.8 of the rl15. This OS what I got, 300yds REM 5r win case br2 ol 2.297. In my book it days this load maxs at 44.3 there were no pressure signs when I originally tested up to 45 grs.

The group to the left was 44.4, 44.6, 44.8 the group to the right was 43(cold bore), 43.4 44. Should I discount that one and just go with the hotter loads? I was going to do 5 shot groups next, should rounds be loaded for every increment from 44.4-44.8?
Thanks

 

[USMCj]

Re: ladder test help analyzing please

Load up 20 rounds at 44.6 and shoot up 4 5 shot groups and see how they do.

you should have loaded some fouler rounds to warm up your barrel before you started with the ladder test, the cold bore shot could be a fluke, or not.

 

[ubet]

Re: ladder test help analyzing please

When I do the next testing I should keep them ay the same ol correct? There were no extract marks the primer didn't seem cratered and the bolt lift was still easy

 

[USMCj]

Re: ladder test help analyzing please

ol as in overall length? if so, then yes. Once you find the load that works good, then you can play with OAL to get the sweet spot. You may not have to depending on how well they shoot.

 

[dpreston]

Re: ladder test help analyzing please

If your looking for advice in general about reading ladder tests, check this out.... http://www.6mmbr.com/laddertest.html

If I were doing a ladder test, I would atleast go out to 500-600 yards with it and be shooting 3 shots of each charge weight. That will give you better spaced results and much easier to read. From my personal testing, I would just start at 44 grains and work up, then try some groups after you ladder.

 

[Unsichtbar]

Re: ladder test help analyzing please

http://optimalchargeweight.embarqspace.com/#/ocw-vs-ladder/4529811360 Might also read some more on the sight if you find it interesting.

IMO OCW test works better others don't like about might interest you. Like USMCj said 44.6 looks likely test then ajust OAL both in and out to tune.

 

[TresMon]

Re: ladder test help analyzing please



Need longer range, then the obvious will jump out at you!

 

[Rhys]

Re: ladder test help analyzing please

Whenever I have used the ladder test method I found it awfuly hard to get any useful info unless shooting at 500 yards min. However from what is on you target there I would load up 15 of each 44.4, 44.6, and 44.8. get out a bit further, and shoot 3 5 round groups of each in a round robbin format, and then take the average of the 3 groups for each load.