We continue to "peel the onion" on the issue of the R-51 trigger performance!  What I have learned so far, is that there is a surprisingly long list of mechanical interactions and variables that have  impacted trigger function.
  I appreciate the thoughtful insights and observations of what is happening with your weapons.

Good info on take-up slack.  I'm pleased that the trigger stops before contacting the bump inside the trigger guard.
Looking forward to hear if the other members observe the same thing.  Greatly appreciate the input








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1.  There are any number of mechanical abnormalities and malfunctions that I have not personally experienced (broken collet bushing, sheared slide stops, squib-fires, etc. etc.).  That does NOT mean that these things never happened, or that I have no need to be aware of them (I've never been run-over by a car, but I damn sure look both ways before I step off the curb!).
2. The recoil impulse, and the force of the slide/barrel going back into battery provide motion and energy that will typically cause the trigger to reset unless the shooter has a white-knuckle death-grip on the weapon.
3. Could someone check and see if there is any "take-up" slack at the beginning of the trigger pull?  Both of the .45's I experienced a problem w/had the take-up adjusted to zero.
4. Thank you in advance for your assistance and input.  The previous post certainly raises some questions!
5.  The fact that there is a trigger stop molded or milled into the trigger guard also makes me curious. . . 

  Thanks for the great replies.  "Unconscious training."   Good insight.
  This only happened with two weapons:  A Govt. Match .45, and my .45 after installing an adjustable trigger.  I have fired more single action (and other) pistols than I can remember.  Only a prob w/these two examples.  I directly relate the problem w/the near-total lack of travel after the break w/these two examples.  The R-51 is the only other pistol I have tried where there is little or no over-travel.  I have read magazine reviews where the tester did not get a follow-up shot. . . The tester attributed this to failure to keep the grip safety engaged . . .  I really wonder if that was the case!
  I have never tried to "ride" the trigger, but obviously HAVE been doing this to some extent.  The "mechanical feedback" referred to is what I have unconsciously been relying on.  (Having to qualify w/DA revolvers over the years may have contributed to this).
  I guess I will have to wait until I can get to a range that has a rental, to find out for sure.  Thanks again for the insight!

 Does anyone have experience improving the "crunchy" trigger break?  It feels somewhat like crushing an aspirin tablet. . .  Sort of the opposite of "breaking a glass rod."
  The second trigger issue is over-travel.  There is not-a-chance for 'follow-through', since trigger travel stops while the aspirin tablet is still being crunched.
  This is directly related to the trigger reset probability. . .  I have had a problem with triggers reset to zero, or little over travel.  I DO sometimes fail to get a reset and am unable to discharge the next round.  . .  This could lead to a terminally embarrassing situation. . .
  I value any experience or input on this as it is the   primary reason I have not purchased  an R-51.

Thanx for the range report/first impression.  The comparisons you made were very (very) informative.  This is why I joined this forum.

  I have shot and maintained Thompsons.  So I am familiar w/the Blish system.  Have been a military small arms instructor and chief range officer of a pistol range.  Have been an NRA certified fireams instructor, and civilian range officer at a club in S Fla.
  I have used/carried a handgun (usually a .45) in military, paramilitary and civilian work, abroad and at home.
  Interested in buying an R-51, but am really put-off by the crunchy trigger w/little or no over-travel.  Otherwise, the gun is VERY attractive to me. . .