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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.277 Ruger wildcat
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<blockquote data-quote="diriel" data-source="post: 620131" data-attributes="member: 26983"><p>I had not thought about the Matrix bullets, thank you for bringing that up. Anyone have any measurements on a 165 / 175 Matrix .277?</p><p></p><p>As for the modest FPS and Ft.Lbs I was really just "worst case" thinking so I could compare things in JBM and still have numbers that would push me one way or the other. </p><p></p><p>I had a 300WM for several years and shot the 208 / 210s out of it. I like to shoot a fair bit, and by about the 40 to 50 rounds down range mark those 200gr.+ pills were beginning to take a toll. I would like to have just a tad bit less recoil. I have considered a brake, and that idea is still very much on the table.</p><p></p><p>All in all it seems like with these new super bullets the .277 cal. really has a nice overall balance to offer up for shooters. Not saying it is magic snake oil.. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> It would be Really Nice to retain 2000 Fps and 1000 Ft.Lbs + out to 1k or just a bit farther. The remaining energy seems easily there, just the Fps to ensure proper bullet expansion etc.</p><p></p><p>Fun with numbers... *IF* I maintain my 3.340" COAL limitation then the base of the 1.52" bullet would be at 1.82" from the head of the case. Ouch <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> Conversely the .270 WSM neck / shoulder junction is located at 1.824, and the actual shoulder / case body junction at 1.664. Now the listed OAL is only 2.860 Vs. a standard LA of 3.340. So, if I take 1.82 as the base of the bullet, then add in the length of the boat tail, I get the location of the Bullet Shank / Neck Shoulder Junction. From there I can decide on how much Neck Length I want, and come up with a OAL Brass Length. For kicks, the 270 Win has a neck length of .384. </p><p></p><p>-- So, 1.82" + Approximately .23"-ish boat tail length = 2.05" Neck / shoulder junction.</p><p>-- 2.05" + .384" = 2.434" OAL brass length.</p><p>The problem at the moment is I have too many assumptions and not enough hard numbers bullet wise. </p><p></p><p>It would be nice to be able to load to COAL and have a 170 gr. Hybrid about .015 off the lands and not worry about possible doughnut problems <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> I know that is being kinda lazy... but the main focus is Hunting .. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /> Less Problems by design = a good thing. </p><p></p><p>Now for a more esoteric consideration. Does anyone know for sure what the throat leade angle on the old M96 Swede's were? I Think it is .5*, but am having a hard time pinning that down. I love how my original M96 was so easy to tune loads for. I figure those Swede's must have known something when they chose the setup they did.</p><p></p><p>The extra case capacity should give a bit of a velocity boost which will be nice. I have 24 Lbs. of H1000 sitting here waiting for a Party to Go-To <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> Most important to me is an over all elegant design that just happens to be a Hammer! </p><p></p><p>Thoughts and Information are more than welcome,</p><p>Gary</p></blockquote><p></p>
[QUOTE="diriel, post: 620131, member: 26983"] I had not thought about the Matrix bullets, thank you for bringing that up. Anyone have any measurements on a 165 / 175 Matrix .277? As for the modest FPS and Ft.Lbs I was really just "worst case" thinking so I could compare things in JBM and still have numbers that would push me one way or the other. I had a 300WM for several years and shot the 208 / 210s out of it. I like to shoot a fair bit, and by about the 40 to 50 rounds down range mark those 200gr.+ pills were beginning to take a toll. I would like to have just a tad bit less recoil. I have considered a brake, and that idea is still very much on the table. All in all it seems like with these new super bullets the .277 cal. really has a nice overall balance to offer up for shooters. Not saying it is magic snake oil.. :) It would be Really Nice to retain 2000 Fps and 1000 Ft.Lbs + out to 1k or just a bit farther. The remaining energy seems easily there, just the Fps to ensure proper bullet expansion etc. Fun with numbers... *IF* I maintain my 3.340" COAL limitation then the base of the 1.52" bullet would be at 1.82" from the head of the case. Ouch :) Conversely the .270 WSM neck / shoulder junction is located at 1.824, and the actual shoulder / case body junction at 1.664. Now the listed OAL is only 2.860 Vs. a standard LA of 3.340. So, if I take 1.82 as the base of the bullet, then add in the length of the boat tail, I get the location of the Bullet Shank / Neck Shoulder Junction. From there I can decide on how much Neck Length I want, and come up with a OAL Brass Length. For kicks, the 270 Win has a neck length of .384. -- So, 1.82" + Approximately .23"-ish boat tail length = 2.05" Neck / shoulder junction. -- 2.05" + .384" = 2.434" OAL brass length. The problem at the moment is I have too many assumptions and not enough hard numbers bullet wise. It would be nice to be able to load to COAL and have a 170 gr. Hybrid about .015 off the lands and not worry about possible doughnut problems :) I know that is being kinda lazy... but the main focus is Hunting .. ;) Less Problems by design = a good thing. Now for a more esoteric consideration. Does anyone know for sure what the throat leade angle on the old M96 Swede's were? I Think it is .5*, but am having a hard time pinning that down. I love how my original M96 was so easy to tune loads for. I figure those Swede's must have known something when they chose the setup they did. The extra case capacity should give a bit of a velocity boost which will be nice. I have 24 Lbs. of H1000 sitting here waiting for a Party to Go-To :) Most important to me is an over all elegant design that just happens to be a Hammer! Thoughts and Information are more than welcome, Gary [/QUOTE]
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