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Hunting
Long Range Hunting & Shooting
300 Norma Improved. Load testing, info, and builds
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<blockquote data-quote="rpierce" data-source="post: 2234886" data-attributes="member: 20643"><p>Well I decided to throw my 338 norma improved barrel on my borden setup. I grabbed 6 pieces of hydro formed brass and got it dialed in at 100 with 86 gr of h1000 and 300 gr bergers. 4 of the 6 shots had a ES of single digits at 2705 fps. The 2 fliers were 20 fps slower. I figured I was at the bottom of the node. </p><p></p><p>I loaded up 3 rounds of 86.3 gr and backed it up to 580 yds. 1.450"/.238 moa at 580 yds for the 3 shots. ES of 10 fps. Easiest load development for breaking in a barrel Ive seen so far LOL. I took a video of Brock shooting it while breaking it in. I had thrown my titanium cheytac brake on it. Kills the recoil. I can watch vapor trail and spot hits no problem with this forming load. Recoil about like the 300 norma improved. Not bad at all. Wouldn't have a problem letting my wife shoot it. </p><p></p><p>After she gets broke in and speeds up Ill try some n570. In my 32" barrel I didn't hit pressure until 3100 fps. Guessing Ill hit pressure around 2950-2975 in the 26" barrel. If I get a accuracy node at 2900 Ill be happy.</p></blockquote><p></p>
[QUOTE="rpierce, post: 2234886, member: 20643"] Well I decided to throw my 338 norma improved barrel on my borden setup. I grabbed 6 pieces of hydro formed brass and got it dialed in at 100 with 86 gr of h1000 and 300 gr bergers. 4 of the 6 shots had a ES of single digits at 2705 fps. The 2 fliers were 20 fps slower. I figured I was at the bottom of the node. I loaded up 3 rounds of 86.3 gr and backed it up to 580 yds. 1.450"/.238 moa at 580 yds for the 3 shots. ES of 10 fps. Easiest load development for breaking in a barrel Ive seen so far LOL. I took a video of Brock shooting it while breaking it in. I had thrown my titanium cheytac brake on it. Kills the recoil. I can watch vapor trail and spot hits no problem with this forming load. Recoil about like the 300 norma improved. Not bad at all. Wouldn't have a problem letting my wife shoot it. After she gets broke in and speeds up Ill try some n570. In my 32" barrel I didn't hit pressure until 3100 fps. Guessing Ill hit pressure around 2950-2975 in the 26" barrel. If I get a accuracy node at 2900 Ill be happy. [/QUOTE]
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300 Norma Improved. Load testing, info, and builds
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