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Hunting
Long Range Hunting & Shooting
338-300 PRC... Sherman Improved!
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<blockquote data-quote="KH_Outdoors" data-source="post: 3100313" data-attributes="member: 123559"><p>Next up, circling back around to the McGuire Ballistics 225 Copper Rose mono's. I have a load with these using 77 gr of H4350 at 2900 fps already, but I feel that they'll do a bit better with something faster burning. I can only get 77/78 gr of H4350 in the case with these. They take up a bit of case capacity. So never did pressure out. From my past experience with the McGuires they've always shot to their full potential 1-2 gr under first pressure signs. </p><p></p><p>Going with N550 on this one, starting extra low just incase! With the hammers, N550 produced the same speed as H4350 with 5 gr less powder. The N550 kernel size is also smaller than H4350 kernels. So this combo could be just about right. </p><p></p><p>This is the last combination that I'll be tinkering with for a while. If these pan out, they'll likely be going to Alaska for some real testing <img class="smilie smilie--emoji" loading="lazy" alt="😎" title="Smiling face with sunglasses :sunglasses:" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f60e.png" data-shortname=":sunglasses:" /></p><p></p><p></p><p>[ATTACH=full]569763[/ATTACH]</p></blockquote><p></p>
[QUOTE="KH_Outdoors, post: 3100313, member: 123559"] Next up, circling back around to the McGuire Ballistics 225 Copper Rose mono's. I have a load with these using 77 gr of H4350 at 2900 fps already, but I feel that they'll do a bit better with something faster burning. I can only get 77/78 gr of H4350 in the case with these. They take up a bit of case capacity. So never did pressure out. From my past experience with the McGuires they've always shot to their full potential 1-2 gr under first pressure signs. Going with N550 on this one, starting extra low just incase! With the hammers, N550 produced the same speed as H4350 with 5 gr less powder. The N550 kernel size is also smaller than H4350 kernels. So this combo could be just about right. This is the last combination that I'll be tinkering with for a while. If these pan out, they'll likely be going to Alaska for some real testing 😎 [ATTACH type="full"]569763[/ATTACH] [/QUOTE]
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338-300 PRC... Sherman Improved!
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