Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Hunting
Long Range Hunting & Shooting
6.5prc to 7saum conversion?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="gregsjt" data-source="post: 2637028" data-attributes="member: 88091"><p>OK, I want to be clear up front, I'm not trying to argue, I really want to get to the bottom of this. Here are my questions / comments:</p><ul> <li data-xf-list-type="ul">Are reamer's cut to the dimensions listed in the SAAMI specs for chamber dimensions? For example, when you look at the below picture the first drawing is the case dimensions and the second drawing is the chamber dimensions, is the second drawing the basis for the reamer design? </li> </ul><p>[ATTACH=full]400532[/ATTACH]</p><p></p><ul> <li data-xf-list-type="ul">If the answer to question 1 is yes, and reamers are cut to the spec's laid out on the SAAMI cut sheets. How are the PRC cases different from the other cases listed below? Why are most of the popular cartridges designed the same way? Almost all have .001 (+/- .0001) difference between the cartridge diagram and the chamber diagram at .200 from the cartridge base. The only exceptions are the WSM cases and the 338 Lapua. </li> </ul> <table style='width: 100%'><tr><td>Case</td><td>Cartridge Dimension @ .200</td><td>Chamber Dimension @ .200</td><td>Difference</td></tr><tr><td>7mm WSM</td><td>0.5550</td><td>0.5563</td><td>0.0013</td></tr><tr><td>33 Nosler</td><td>0.5500</td><td>0.5510</td><td>0.0010</td></tr><tr><td>338 RUM</td><td>0.5500</td><td>0.5510</td><td>0.0010</td></tr><tr><td>7mm SAUM</td><td>0.5500</td><td>0.5510</td><td>0.0010</td></tr><tr><td>300 PRC</td><td>0.5320</td><td>0.5330</td><td>0.0010</td></tr><tr><td>6.5 PRC</td><td>0.5320</td><td>0.5330</td><td>0.0010</td></tr><tr><td>338 RCM</td><td>0.5320</td><td>0.5330</td><td>0.0010</td></tr><tr><td>338 Lapua</td><td>0.5854</td><td>0.5873</td><td>0.0019</td></tr><tr><td>26 Nosler</td><td>0.5500</td><td>0.5510</td><td>0.0010</td></tr><tr><td>300 WSM</td><td>0.5550</td><td>0.5563</td><td>0.0013</td></tr><tr><td>375 Ruger</td><td>0.5320</td><td>0.5330</td><td>0.0010</td></tr><tr><td>300 Win Mag</td><td>0.5126</td><td>0.5136</td><td>0.0010</td></tr><tr><td>7mm Rem Mag</td><td>0.5127</td><td>0.5136</td><td>0.0009</td></tr><tr><td>6.5 Creed</td><td>0.4703</td><td>0.4714</td><td>0.0011</td></tr><tr><td>260 Rem</td><td>0.4703</td><td>0.4714</td><td>0.0011</td></tr><tr><td>270 Win</td><td>0.4698</td><td>0.4708</td><td>0.0010</td></tr><tr><td>7mm-08</td><td>0.4703</td><td>0.4714</td><td>0.0011</td></tr></table><p></p><p>So, final question: If Hornady botched the design of the PRC cases or reamers, why is the difference from cartridge to chamber the same as all of these other cartridges?</p><p></p><p>I guess the most pressing question is, if the design is the same or similar, why are we seeing "clickers" with PRC cases and not all of the others? </p><p></p><p>Thanks!</p></blockquote><p></p>
[QUOTE="gregsjt, post: 2637028, member: 88091"] OK, I want to be clear up front, I'm not trying to argue, I really want to get to the bottom of this. Here are my questions / comments: [LIST] [*]Are reamer's cut to the dimensions listed in the SAAMI specs for chamber dimensions? For example, when you look at the below picture the first drawing is the case dimensions and the second drawing is the chamber dimensions, is the second drawing the basis for the reamer design? [/LIST] [ATTACH type="full"]400532[/ATTACH] [LIST] [*]If the answer to question 1 is yes, and reamers are cut to the spec's laid out on the SAAMI cut sheets. How are the PRC cases different from the other cases listed below? Why are most of the popular cartridges designed the same way? Almost all have .001 (+/- .0001) difference between the cartridge diagram and the chamber diagram at .200 from the cartridge base. The only exceptions are the WSM cases and the 338 Lapua. [/LIST] [TABLE] [TR] [TD]Case[/TD] [TD]Cartridge Dimension @ .200[/TD] [TD]Chamber Dimension @ .200[/TD] [TD]Difference[/TD] [/TR] [TR] [TD]7mm WSM[/TD] [TD]0.5550[/TD] [TD]0.5563[/TD] [TD]0.0013[/TD] [/TR] [TR] [TD]33 Nosler[/TD] [TD]0.5500[/TD] [TD]0.5510[/TD] [TD]0.0010[/TD] [/TR] [TR] [TD]338 RUM[/TD] [TD]0.5500[/TD] [TD]0.5510[/TD] [TD]0.0010[/TD] [/TR] [TR] [TD]7mm SAUM[/TD] [TD]0.5500[/TD] [TD]0.5510[/TD] [TD]0.0010[/TD] [/TR] [TR] [TD]300 PRC[/TD] [TD]0.5320[/TD] [TD]0.5330[/TD] [TD]0.0010[/TD] [/TR] [TR] [TD]6.5 PRC[/TD] [TD]0.5320[/TD] [TD]0.5330[/TD] [TD]0.0010[/TD] [/TR] [TR] [TD]338 RCM[/TD] [TD]0.5320[/TD] [TD]0.5330[/TD] [TD]0.0010[/TD] [/TR] [TR] [TD]338 Lapua[/TD] [TD]0.5854[/TD] [TD]0.5873[/TD] [TD]0.0019[/TD] [/TR] [TR] [TD]26 Nosler[/TD] [TD]0.5500[/TD] [TD]0.5510[/TD] [TD]0.0010[/TD] [/TR] [TR] [TD]300 WSM[/TD] [TD]0.5550[/TD] [TD]0.5563[/TD] [TD]0.0013[/TD] [/TR] [TR] [TD]375 Ruger[/TD] [TD]0.5320[/TD] [TD]0.5330[/TD] [TD]0.0010[/TD] [/TR] [TR] [TD]300 Win Mag[/TD] [TD]0.5126[/TD] [TD]0.5136[/TD] [TD]0.0010[/TD] [/TR] [TR] [TD]7mm Rem Mag[/TD] [TD]0.5127[/TD] [TD]0.5136[/TD] [TD]0.0009[/TD] [/TR] [TR] [TD]6.5 Creed[/TD] [TD]0.4703[/TD] [TD]0.4714[/TD] [TD]0.0011[/TD] [/TR] [TR] [TD]260 Rem[/TD] [TD]0.4703[/TD] [TD]0.4714[/TD] [TD]0.0011[/TD] [/TR] [TR] [TD]270 Win[/TD] [TD]0.4698[/TD] [TD]0.4708[/TD] [TD]0.0010[/TD] [/TR] [TR] [TD]7mm-08[/TD] [TD]0.4703[/TD] [TD]0.4714[/TD] [TD]0.0011[/TD] [/TR] [/TABLE] So, final question: If Hornady botched the design of the PRC cases or reamers, why is the difference from cartridge to chamber the same as all of these other cartridges? I guess the most pressing question is, if the design is the same or similar, why are we seeing "clickers" with PRC cases and not all of the others? Thanks! [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Hunting
Long Range Hunting & Shooting
6.5prc to 7saum conversion?
Top