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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 Ultra Mag Info
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<blockquote data-quote="benny1" data-source="post: 962500" data-attributes="member: 62701"><p>I also love the 338 rum I ran rl33 in a ladder with 300 gr Sierra </p><p>I started at 97 grs 2815</p><p>98 grs 2820</p><p>99 grs 2854</p><p>100 grs 2901</p><p>101 grs 2898</p><p>102 grs 2940</p><p>103 grs 2929</p><p>104 grs 2966</p><p>105 grs 3006</p><p>106 grs 2999</p><p>107 grs 3087</p><p>At 100 grs it's starting to b a compressed load no pressure signs </p><p>At 104 primers started to flatten out</p><p>At 107 stop bad pressure </p><p>It was very weird running such a compressed load but I wanted to c where it showed pressure so I backed it down to 105 and it shot a ragged hole at 100 yards 3 shots where 3009, 3016, 3026 the primers were a little flat but it shot well so I backed it down to 103 and shot 2 3 shot groups 2977,2994,2995 and 3008,3004,2998 and it shot 2 prefect triangles all three touching everything was good since I was playing around I went back to 100 where it started to compress and shot a 3 shot group 2882,2902,2896 2 were touching and the 3 rd was about 1/2 inch out </p><p>My gun really likes. 105 but since I showed bad pressure at 107 I think I'm not going to shoot it there I think 103 is where I need to b</p><p>When loading for ladder test I had to keep turning my mirco seating down in order to keep my oal which is 2.990 off the oglive necked sized 3/4 with a .64 bushing and cases trimmed to 2.741.5 barrel length 28.5</p><p>Rl 25 I was at 89 grs @ 2830 and it shot a ragged hole there with no pressure signs </p><p>So now I'm off to work again so when I get back I'll play some more with rl33 cuz I like this powder more speed less pressure signs I don't have to be that fast as long as it is easy on gun, primers and barrel after all it just comes down to a few clicks on the scope hope this helps ben</p></blockquote><p></p>
[QUOTE="benny1, post: 962500, member: 62701"] I also love the 338 rum I ran rl33 in a ladder with 300 gr Sierra I started at 97 grs 2815 98 grs 2820 99 grs 2854 100 grs 2901 101 grs 2898 102 grs 2940 103 grs 2929 104 grs 2966 105 grs 3006 106 grs 2999 107 grs 3087 At 100 grs it's starting to b a compressed load no pressure signs At 104 primers started to flatten out At 107 stop bad pressure It was very weird running such a compressed load but I wanted to c where it showed pressure so I backed it down to 105 and it shot a ragged hole at 100 yards 3 shots where 3009, 3016, 3026 the primers were a little flat but it shot well so I backed it down to 103 and shot 2 3 shot groups 2977,2994,2995 and 3008,3004,2998 and it shot 2 prefect triangles all three touching everything was good since I was playing around I went back to 100 where it started to compress and shot a 3 shot group 2882,2902,2896 2 were touching and the 3 rd was about 1/2 inch out My gun really likes. 105 but since I showed bad pressure at 107 I think I'm not going to shoot it there I think 103 is where I need to b When loading for ladder test I had to keep turning my mirco seating down in order to keep my oal which is 2.990 off the oglive necked sized 3/4 with a .64 bushing and cases trimmed to 2.741.5 barrel length 28.5 Rl 25 I was at 89 grs @ 2830 and it shot a ragged hole there with no pressure signs So now I'm off to work again so when I get back I'll play some more with rl33 cuz I like this powder more speed less pressure signs I don't have to be that fast as long as it is easy on gun, primers and barrel after all it just comes down to a few clicks on the scope hope this helps ben [/QUOTE]
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