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338-300 PRC... Sherman Improved!
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<blockquote data-quote="300 Driver" data-source="post: 3094237" data-attributes="member: 91257"><p>Made it back out to finish pressure testing today. All loads were R26. I have the .312FB reamer. I hunt mostly Hawaii these days and even though it's hot, the temp swings very little. It was 79 degrees today and these are sea level speeds.</p><p></p><p>230 ELDx was a standout, but it's not the bullet I really hoped to use. The entire 230 ladder stayed within an inch. A decent node shows up at 86.0-87.0 and is around 3075fps. I got a slightly sticky bolt lift at 88gr of R26. I may end up with this bullet though as a 3000+ 230 ELDx is no slouch.</p><p></p><p>The 225 CE MTH was all over the place until the charges got compressed. 88.5-90 clustered very tight and speeds exceeded 3100. I need to try a faster powder, these results match KH's results with H10000. R26 and H1000 are #160 and 161 on the current burn rate charts. The loads are highly compressed as the powder was nearly at the base of the case neck!</p><p></p><p>270 ELDx didn't pressure out, but I also expected more speed. Rich achieved 2800+ with a 285 in his 24" gun and I was hoping for similar. I plan to try 82-85 in .5gr increments later. But I did get a cluster at 80.5-81.5 and 2700fps with a 270 isn't shabby. </p><p></p><p>I've got some 300gr Sierras to try, but I don't have high hopes given the long bearing surface. My goal was to run the heavy 338 pills faster than my Win Mag could and use that rifle as my project. My pet 338WM load was the 225 CE at 2950, so I didn't gain much with that bullet. But I gained about 150fps on the 230 and 250fps on the 270, so I'm liking the 33SM so far!</p><p></p><p>I need to trash my Magnetospeed. It's 10yrs old and lived a rough life…</p><p></p><table style='width: 100%'><tr><td><strong>R26</strong></td><td><strong>225 CE MTH</strong></td><td><strong>230 ELDx</strong></td><td><strong>270ELDx</strong></td></tr><tr><td><strong>72.5</strong></td><td></td><td></td><td>NR</td></tr><tr><td><strong>73</strong></td><td></td><td></td><td>NR</td></tr><tr><td><strong>73.5</strong></td><td></td><td></td><td>NR</td></tr><tr><td><strong>74</strong></td><td></td><td></td><td>NR</td></tr><tr><td><strong>74.5</strong></td><td></td><td></td><td>NR</td></tr><tr><td><strong>75</strong></td><td></td><td></td><td>NR</td></tr><tr><td><strong>75.5</strong></td><td></td><td></td><td>NR</td></tr><tr><td><strong>76</strong></td><td></td><td></td><td>NR</td></tr><tr><td><strong>76.5</strong></td><td></td><td></td><td>NR</td></tr><tr><td><strong>77</strong></td><td></td><td></td><td>NR</td></tr><tr><td><strong>77.5</strong></td><td></td><td></td><td>NR</td></tr><tr><td><strong>78</strong></td><td></td><td></td><td>NR</td></tr><tr><td><strong>78.5</strong></td><td></td><td></td><td>NR</td></tr><tr><td><strong>79</strong></td><td></td><td></td><td>NR</td></tr><tr><td><strong>79.5</strong></td><td></td><td></td><td>NR</td></tr><tr><td><strong>80</strong></td><td>No Reading (NR)</td><td></td><td>NR</td></tr><tr><td><strong>80.5</strong></td><td>2836</td><td></td><td>2679</td></tr><tr><td><strong>81</strong></td><td>2871</td><td></td><td>2699</td></tr><tr><td><strong>81.5</strong></td><td>2884</td><td></td><td>2681</td></tr><tr><td><strong>82</strong></td><td>NR</td><td></td><td>2721</td></tr><tr><td><strong>82.5</strong></td><td>NR</td><td></td><td></td></tr><tr><td><strong>83</strong></td><td>NR</td><td>NR</td><td></td></tr><tr><td><strong>83.5</strong></td><td>2874</td><td>2950</td><td></td></tr><tr><td><strong>84</strong></td><td>2902</td><td>2954</td><td></td></tr><tr><td><strong>84.5</strong></td><td>NR</td><td>3009</td><td></td></tr><tr><td><strong>85</strong></td><td>2968</td><td>3049</td><td></td></tr><tr><td><strong>85.5</strong></td><td>2983</td><td>3035</td><td></td></tr><tr><td><strong>86</strong></td><td>2970</td><td>NR</td><td></td></tr><tr><td><strong>86.5</strong></td><td>NR</td><td>3078</td><td></td></tr><tr><td><strong>87</strong></td><td>3032</td><td>3083</td><td></td></tr><tr><td><strong>87.5</strong></td><td>NR</td><td>3157</td><td></td></tr><tr><td><strong>88</strong></td><td>3027</td><td>Pressure</td><td></td></tr><tr><td><strong>88.5</strong></td><td>3072</td><td></td><td></td></tr><tr><td><strong>89</strong></td><td>3059</td><td></td><td></td></tr><tr><td><strong>89.5</strong></td><td>3107</td><td></td><td></td></tr><tr><td><strong>90</strong></td><td>3149</td><td></td><td></td></tr></table></blockquote><p></p>
[QUOTE="300 Driver, post: 3094237, member: 91257"] Made it back out to finish pressure testing today. All loads were R26. I have the .312FB reamer. I hunt mostly Hawaii these days and even though it's hot, the temp swings very little. It was 79 degrees today and these are sea level speeds. 230 ELDx was a standout, but it's not the bullet I really hoped to use. The entire 230 ladder stayed within an inch. A decent node shows up at 86.0-87.0 and is around 3075fps. I got a slightly sticky bolt lift at 88gr of R26. I may end up with this bullet though as a 3000+ 230 ELDx is no slouch. The 225 CE MTH was all over the place until the charges got compressed. 88.5-90 clustered very tight and speeds exceeded 3100. I need to try a faster powder, these results match KH’s results with H10000. R26 and H1000 are #160 and 161 on the current burn rate charts. The loads are highly compressed as the powder was nearly at the base of the case neck! 270 ELDx didn't pressure out, but I also expected more speed. Rich achieved 2800+ with a 285 in his 24" gun and I was hoping for similar. I plan to try 82-85 in .5gr increments later. But I did get a cluster at 80.5-81.5 and 2700fps with a 270 isn't shabby. I've got some 300gr Sierras to try, but I don't have high hopes given the long bearing surface. My goal was to run the heavy 338 pills faster than my Win Mag could and use that rifle as my project. My pet 338WM load was the 225 CE at 2950, so I didn't gain much with that bullet. But I gained about 150fps on the 230 and 250fps on the 270, so I'm liking the 33SM so far! I need to trash my Magnetospeed. It's 10yrs old and lived a rough life… [TABLE] [TR] [TD][B]R26[/B][/TD] [TD][B]225 CE MTH[/B][/TD] [TD][B]230 ELDx[/B][/TD] [TD][B]270ELDx[/B][/TD] [/TR] [TR] [TD][B]72.5[/B][/TD] [TD][/TD] [TD][/TD] [TD]NR[/TD] [/TR] [TR] [TD][B]73[/B][/TD] [TD][/TD] [TD][/TD] [TD]NR[/TD] [/TR] [TR] [TD][B]73.5[/B][/TD] [TD][/TD] [TD][/TD] [TD]NR[/TD] [/TR] [TR] [TD][B]74[/B][/TD] [TD][/TD] [TD][/TD] [TD]NR[/TD] [/TR] [TR] [TD][B]74.5[/B][/TD] [TD][/TD] [TD][/TD] [TD]NR[/TD] [/TR] [TR] [TD][B]75[/B][/TD] [TD][/TD] [TD][/TD] [TD]NR[/TD] [/TR] [TR] [TD][B]75.5[/B][/TD] [TD][/TD] [TD][/TD] [TD]NR[/TD] [/TR] [TR] [TD][B]76[/B][/TD] [TD][/TD] [TD][/TD] [TD]NR[/TD] [/TR] [TR] [TD][B]76.5[/B][/TD] [TD][/TD] [TD][/TD] [TD]NR[/TD] [/TR] [TR] [TD][B]77[/B][/TD] [TD][/TD] [TD][/TD] [TD]NR[/TD] [/TR] [TR] [TD][B]77.5[/B][/TD] [TD][/TD] [TD][/TD] [TD]NR[/TD] [/TR] [TR] [TD][B]78[/B][/TD] [TD][/TD] [TD][/TD] [TD]NR[/TD] [/TR] [TR] [TD][B]78.5[/B][/TD] [TD][/TD] [TD][/TD] [TD]NR[/TD] [/TR] [TR] [TD][B]79[/B][/TD] [TD][/TD] [TD][/TD] [TD]NR[/TD] [/TR] [TR] [TD][B]79.5[/B][/TD] [TD][/TD] [TD][/TD] [TD]NR[/TD] [/TR] [TR] [TD][B]80[/B][/TD] [TD]No Reading (NR)[/TD] [TD][/TD] [TD]NR[/TD] [/TR] [TR] [TD][B]80.5[/B][/TD] [TD]2836[/TD] [TD][/TD] [TD]2679[/TD] [/TR] [TR] [TD][B]81[/B][/TD] [TD]2871[/TD] [TD][/TD] [TD]2699[/TD] [/TR] [TR] [TD][B]81.5[/B][/TD] [TD]2884[/TD] [TD][/TD] [TD]2681[/TD] [/TR] [TR] [TD][B]82[/B][/TD] [TD]NR[/TD] [TD][/TD] [TD]2721[/TD] [/TR] [TR] [TD][B]82.5[/B][/TD] [TD]NR[/TD] [TD][/TD] [TD][/TD] [/TR] [TR] [TD][B]83[/B][/TD] [TD]NR[/TD] [TD]NR[/TD] [TD][/TD] [/TR] [TR] [TD][B]83.5[/B][/TD] [TD]2874[/TD] [TD]2950[/TD] [TD][/TD] [/TR] [TR] [TD][B]84[/B][/TD] [TD]2902[/TD] [TD]2954[/TD] [TD][/TD] [/TR] [TR] [TD][B]84.5[/B][/TD] [TD]NR[/TD] [TD]3009[/TD] [TD][/TD] [/TR] [TR] [TD][B]85[/B][/TD] [TD]2968[/TD] [TD]3049[/TD] [TD][/TD] [/TR] [TR] [TD][B]85.5[/B][/TD] [TD]2983[/TD] [TD]3035[/TD] [TD][/TD] [/TR] [TR] [TD][B]86[/B][/TD] [TD]2970[/TD] [TD]NR[/TD] [TD][/TD] [/TR] [TR] [TD][B]86.5[/B][/TD] [TD]NR[/TD] [TD]3078[/TD] [TD][/TD] [/TR] [TR] [TD][B]87[/B][/TD] [TD]3032[/TD] [TD]3083[/TD] [TD][/TD] [/TR] [TR] [TD][B]87.5[/B][/TD] [TD]NR[/TD] [TD]3157[/TD] [TD][/TD] [/TR] [TR] [TD][B]88[/B][/TD] [TD]3027[/TD] [TD]Pressure[/TD] [TD][/TD] [/TR] [TR] [TD][B]88.5[/B][/TD] [TD]3072[/TD] [TD][/TD] [TD][/TD] [/TR] [TR] [TD][B]89[/B][/TD] [TD]3059[/TD] [TD][/TD] [TD][/TD] [/TR] [TR] [TD][B]89.5[/B][/TD] [TD]3107[/TD] [TD][/TD] [TD][/TD] [/TR] [TR] [TD][B]90[/B][/TD] [TD]3149[/TD] [TD][/TD] [TD][/TD] [/TR] [/TABLE] [/QUOTE]
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338-300 PRC... Sherman Improved!
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