I too shoot my 625 JM and am having a hoot. Here are the specifics:
8.2.5 Revolver Division (REV)
Revolvers will be categorized into one of the two following sub-categories: Stock Revolver or Enhanced Revolver
8.2.5.1 Stock Revolver handguns permitted for use must be:
8.2.5.1.1 Any revolver that uses .38 Special or larger cartridges with a rimmed case and is not loaded
with moon clips.
8.2.5.1.2 The unloaded firearm must weigh 43.00 oz. (1219.0 grams) or less.
8.2.5.2 Enhanced Revolver handguns permitted for use must be:
8.2.5.2.1 Any revolver that uses .357 magnum or larger cartridges with rimmed or rimless cases. 8.2.5.2.2 The unloaded firearm must weigh 50.00 oz. (1417.5 grams) or less.
8.2.5.2.3 May be loaded via speed loader or full moon clip.
8.2.5.3 Stock and Enhanced Revolver requirements:
8.2.5.3.1 The use of trimmed (shortened) ammunition is not allowed.
8.2.5.3.2 Ammunition used must match the cartridge listed on the firearm with the following
exceptions:
8.2.5.3.2.1 .38 special in .357 magnum 8.2.5.3.2.2 .44 special in .44 magnum 8.2.5.3.2.3 .45 Auto Rim or .45 GAP in .45 ACP 8.2.5.3.2.4 .45 ACP or .45 GAP in .45 Colt 8.2.5.3.2.5 .40 S&W in 10mm
8.2.5.3.3 Barrel length of 4.25” (108 mm) or less.
8.2.5.3.4 Be loaded to the division capacity of six (6) rounds in the cylinder. Seven (7) and eight (8)
shot revolvers are permitted, but may only load six (6) rounds.
8.2.5.4 Stock and Enhanced Revolver Permitted Modifications (Inclusive list):
8.2.5.4.1 Sights may be changed to another notch and post type. The frame and barrel may be machined to accept different style sights.
8.2.5.4.2 Action work to enhance trigger pull as long as safety is maintained (smoothing the trigger face, removing the hammer spur, use of over travel stop, conversion to DA only and addition of ball detent are considered action work and are permitted).
8.2.5.4.3 Grips may be changed to another style or material that is similar to factory configuration, provided they do not weigh more than 2.00 oz. (56.7 grams) more than the factory standard weight for that model.
8.2.5.4.4 Grip tape, skateboard tape, etc. may be used.
8.2.5.4.5 Cylinder latches may be changed to another factory offering from the firearm manufacturer. 8.2.5.4.6 Chamfer the rear of the chambers.
8.2.5.4.7 Shortening of factory barrels.
8.2.5.4.8 Re-barreling to another factory offering for that model.
8.2.5.4.9 Firearms converted to accept moon clips may be used in Stock Revolver provided moon clips
are not used.
8.2.5.4.10 Custom finishes.
8.2.5.5 Enhanced Revolver Additional Permitted Modifications (Inclusive list):
8.2.5.5.1 Cylinder latches may be modified or replaced, but may not protrude past the frame in any direction and may not be thicker than 3/8" (9.5 mm) as measured from the side plate of the frame.
8.2.5.5.2 Conversion to accept moon clips.
8.2.5.6 Stock and Enhanced Revolver Excluded Modifications (Non-Inclusive list):
8.2.5.6.1 Oversize or heavy barrels.
8.2.5.6.2 Hogue Big Butt grips and similar are not allowed. The maximum grip dimensions allowed
are:
5.00” (127mm) maximum height, measured from the bottom of the hammer opening in the frame to
the bottom of the grip
2 3/8” (60.3mm) maximum depth. 1 5/8” (41.3mm) maximum width
