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My ladder test

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  #1  
Unread 05-18-2006, 09:03 AM
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Join Date: Aug 2005
Location: White City, Saskatchewan
Posts: 218
My ladder test

Here is my 300WM ladder test that I did at 300 yards.

The loads were 72gn RL-22 up to 74gn in .2gn incriments.
210gn Berger bullets
Nosler brass
Fed 215M primers.

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  •   #2  
    Unread 05-18-2006, 01:49 PM
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    Re: My ladder test

    300 yards eh? Well if you want to get picky then graph the vertical spread of each shot and the velocity string and look for a node, or just use which ever load you want from that ragged cluster and call it good. [img]/ubbthreads/images/graemlins/wink.gif[/img]
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      #3  
    Unread 05-18-2006, 02:04 PM
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    Re: My ladder test

    Too bad you hit the yardstick, did you call that one? [img]/ubbthreads/images/graemlins/grin.gif[/img]

    edge.
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      #4  
    Unread 05-18-2006, 08:29 PM
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    Re: My ladder test

    no chrony data?
    2-3 is the most obvious... but I hate looking at 10 shot ladders with no chrony downrange. 20 shots is easier to make sense of if no chrony.
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      #5  
    Unread 05-18-2006, 10:10 PM
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    Re: My ladder test

    I have been shooting the 72.2gn load which is the second shot of that group. I found that the rounds I fired with 74gn and higher were stretching the primer pocket more than I liked. It has given me great accuracy and I have shot a few 3" groups at 600yards with less than 1" vertical spreads. Here is some info on my rifle. It is a trued remington action,bedded in the factory sendero HS precision stock wearing a 28 5/8" #7 contoured Ted Gailard (canadian) barrel.It has a 6.5-22X50 Leupold Mark 4 scope mounted in Farrell rings and bases on top.
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      #6  
    Unread 05-19-2006, 08:26 PM
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    Re: My ladder test

    That has to be the largest picture I have ever viewed portions of [img]/ubbthreads/images/graemlins/laugh.gif[/img]

    Seriously , it looks like a painting its so big [img]/ubbthreads/images/graemlins/grin.gif[/img]

    Just curious what these rounds are coming out of , length of bbl etc .

    I just got back from the range shooting my 300 winnie with RL22 and 190 smk's . Strange doings for sure .

    I had previously developed a load using these components that has shot .3's at 100, .7's at 300 and 2" and a bit groups at 700. Load was 73.2 grs. of RL 22 under a 190 smk out of a 28" bbl. This load was avging 3050 over an Oehler 35p.All this out of a 28" Broughton 5c bbl

    A short time ago I realized that I had not pushed this combo to the doorstep of the OP dog ( overpressure )So , I loaded up some all the way to 74 grs . 73.5 grs had a esof 15 and sd of 7 for 5 rounds and went into .4 something at 100 , 73.8 grs also had a es of 15 and a sd of 7 for 5 rounds and went into .3 something at 100 , 74. grs had a es 0f 22 and sd of 9 and went into .162 at 100. The first two strings were 5 shot groups and t6he last was 4 shots because I did not want to fire the fourth shot...............not because it might mess up the group but because I wanted to weigh iot to see if I had put the last two strings out of order in my ammo box . The velocities were that crazy with the last 5 ( 4 ) shot group.

    I will pursue this madness , 3100 fps 190smk's is kicking for an accurate load out of a 300 winnie and there are no op signs at all !

    Reckon my point is to " keep on looking " you never know what you might find .

    Jim B.
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      #7  
    Unread 05-19-2006, 10:42 PM
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    Re: My ladder test

    Jimm sorry about the size of the picture. It was the first one that I have ever posted. The specs on my gun are right above your post.
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