Ring Height Comparisons

  Burris Burris Leupold Millett Redfield Tasco Weaver
  Signature   Std/QR/DD        
Standard Super Low 1"     .050 (no QR/DD)        
Standard Low 1"   .150 (noDD) .150   .150    
Standard Medium1" .270(+DD) .270 (noDD) .270   .270    
Standard High 1" .390(+DD) .390 (noDD) .400   .400    
Standard Super High 1"     .500   .520    
Standard Extension Low 1"   .150 (.625 extn) .150 (no QR/DD)(.625 extn)        
Standard Extension Medium 1"     .270 (no DD) (.625 extn)   .270 (.625 extn)    
Standard Extension High 1"     .400 (no DD) (.625 extn)   .400 (.625 extn)    
Standard 30mm Low     .060        
Standard 30mm Medium .180 .180 .180        
Standard 30mm High .300 .300 .310   .480    
Standard 30mm Super High     .410        
Standard 30mm Extension Medium     .180 (no QR/DD) (.625 extn)        
Standard 30mm Extension High     .310 (no DD) (.625 extn)        
Weaver Style 1" Super Low   .044(Zee)          
Weaver Style 1" Low   .130(Zee) .230(QRW) .275 (Angle-loc)   .160 .089
Weaver Style 1" Medium .270 (Zee) .255(Zee) .350(QRW) .340(Mk4) .395(Angle-loc)     .168
Weaver Style 1" High .420 (Zee) .450(Zee) .480(QRW) .560(Mk4) .525(Angle-loc)   .385 .332
Weaver Style 1" Extra High     .900(Mk4) 1.025(Angle-loc)     .560
Weaver Style 1" See Through             .750
Weaver Style 1" See Through Extended             .750 (.750 extn)
Weaver Style 1" Extension Medium       .395 (Angle-loc) (.625 extn)      
Weaver Style 1" Extension High       .525 (Angle-loc) (.625 extn)     .332 (.750 extn)
Weaver Style 30mm Low       .330(Angle-loc)   .235 .288
Weaver Style 30mm Medium     .260 (QRW) .250(Mk4) .477(Angle-loc)      
Weaver Style 30mm High .455 (Zee) .455 (Zee) .390 (QRW) .470(Mk4) .622(Angle-loc)   .390 .500
Weaver Style 30mm Super High     .390 (QRW) .810(Mk4)        
Weaver Style 30mm Extension Medium       .477 (Angle-loc) (.625 extn)      
Weaver Style 30mm Extension High       .622 (Angle-loc) (.625 extn)      
.22 Rimfire Rings Low 1"     .220 .295(Windage adjustable)      
.22 Rimfire Rings Medium 1"   .400 .550 .420(Windage adjustable) .382 .390  
.22 Rimfire Rings High 1" .793 .550   .600(Windage adjustable)      
.22 Rimfire 30mm Medium       .429(Windage adjustable) .392 .400  
Sako Low 1"     .230        
Sako Medium 1"     .360        
Sako High 1"     .560        
Sako Super High 1"     .660        
Sako 30mm Medium     .270        
Sako 30mm High     .470        
Sako 30mm Super High     .570        
"Ruger" rings 1"Low .410 .410 .390        
"Ruger" rings 1" Medium .535 .535 .530        
"Ruger" rings 1" High .660 .660 .640        
"Ruger" rings 1" Extension Medium     .530        
"Ruger" rings 1" Extension High     .640        
"Ruger" rings 1" Extension Super High     .750        
"Ruger" rings 30mm Medium   .545 .440        
"Ruger" rings 30mm High   .670 .560        
"Ruger" rings 30mm Extension Medium     .440 (.625 extn)        
"Ruger" rings 30mm Extension High     .550 (.625 extn)        
"Ruger" rings 30mm Extension Super High     .660 (.625 extn)        
M77 Ruger 1" Medium (Front Ring Height)       .473      
M77 Ruger 1" High (Front Ring Height)     .510 Extn Rings .510 (.625 extn) .586      
M77 Ruger 1" Super High (Front Ring Height)     .610 Extn Rings .610 (.625 extn)        
M77 Ruger 30mm Medium (Front Ring Height)     .310 .397      
M77 Ruger 30mm High (Front Ring Height)     .440 .510      
M77 Ruger 30mm Super high (Front Ring Height)     .540        

Measurements are in inches from top of base to bottom of scope tube.

Burris makes Double Dovetail in Signature rings only.
Burris extension is .625" (5/8").
Leupold extension is .625" (5/8").
Millet extension is .625" (5/8").
Weaver extension is .750" (3/4").