Taurus Judge Gen 1 Dual-Caliber Revolver - .45 Colt & .410 GA Compact vs S&W Model 637 Lightweight .38 SPL +P Revolver - Compact Defense
The short answer
The Taurus Judge Gen 1 Dual-Caliber Revolver - .45 Colt & .410 GA Compact and the S&W Model 637 Lightweight .38 SPL +P Revolver - Compact Defense are both single/double action revolvers. The Taurus Judge Gen 1 Dual-Caliber Revolver - .45 Colt & .410 GA Compact is the more affordable option, starting at $399.99 versus $449.99. On the spec sheet, the S&W Model 637 Lightweight .38 SPL +P Revolver - Compact Defense is lighter (15 oz vs 29 oz).
Frequently asked questions
- What is the difference between the Taurus Judge Gen 1 Dual-Caliber Revolver - .45 Colt & .410 GA Compact and the S&W Model 637 Lightweight .38 SPL +P Revolver - Compact Defense?
- They differ mainly in caliber (.45 Colt vs .38 Special), barrel length (3" vs 1.9"), overall length (9.5" vs 6.31") and weight (29 oz vs 15 oz).
- Which is cheaper, the Taurus Judge Gen 1 Dual-Caliber Revolver - .45 Colt & .410 GA Compact or the S&W Model 637 Lightweight .38 SPL +P Revolver - Compact Defense?
- The Taurus Judge Gen 1 Dual-Caliber Revolver - .45 Colt & .410 GA Compact is currently the cheaper of the two, with a lowest listed price of $399.99 compared with $449.99 for the S&W Model 637 Lightweight .38 SPL +P Revolver - Compact Defense. Dealer prices are live and can change.
- Are the Taurus Judge Gen 1 Dual-Caliber Revolver - .45 Colt & .410 GA Compact and the S&W Model 637 Lightweight .38 SPL +P Revolver - Compact Defense the same caliber?
- No. The Taurus Judge Gen 1 Dual-Caliber Revolver - .45 Colt & .410 GA Compact is .45 Colt and the S&W Model 637 Lightweight .38 SPL +P Revolver - Compact Defense is .38 Special.

