Edit:
The following post are taken from another thread I started.
I have had my B-14R for a few months now and have quite a bit of time and rounds invested in shooting it with various ammo torque settings and triggers. Torque settings on the action screw is something I haven't played with much on any rifle of mine; I normally set it on 20 in/lbs and leave it. Currently I am torn between 20 and 40 for my setting. So far I have accounted for 3,100 rounds shot with 3,500 being a more accurate number.
What I want to touch on with this review are things you can't already read about but if you have specific question, ask and I will try to help.
First item to discuss are triggers.
Factory Trigger:
My factory trigger was very bad if I recall it was around 3 lb. It may have been a little less but even so.... So to shoot to the full potential of the rifle I felt I needed to get a different trigger.
TriggerTech Diamond:
Based on recommendations in here and what I read I went with the TT Diamond as first choice. The TT Diamond was a total fail. To be a safe trigger without AD's the advertised pull weight was not even close. Even when getting it safe the pull itself was very inconsistent which resulted in a few AD's from that. AD's in the beginning was caused by bolt closure, AD's in the end was caused by trigger pull weight inconsistency. Also the bolt was very hard to open and hard to move back and forth. Keep in mind, I'm not talking hard to the point it could barely be done but it was noticeably more difficult than with the factory trigger. One thing I did like was the flat trigger shoe.
Elftmann Tactical R700 SE:
I decided on Elftmann because I got a good deal at $200 shipped. What I didn't know was I was only getting the curved trigger shoe and the flat one was not included. The installation was straight forward without issue. But, when I tried to put the trigger guard on, it wouldn't fit and was hitting the bottom of the trigger housing. I'm not going to go into it much with Elftmann unless someone wants to hear the finer details. Currently they know about the issue with the Bergara HMR stock and are in the process of developing a new, slimer housing. Mine is at Elftmann being fitted. According to Cara at Elftmann it will ship out next week. We will see. Things I notice while I had it in was the same hard bolt manipulation as with the TT Diamond. The minimum trigger pull weight was also not as advertised. For the price I paid I'll just wait on this one and use in a RimX, Deuce or Vudoo barreled action. Also it will come with both shoes when received.
Bix'n Andy TacSport PRO Single Stage:
Grand Slam! This trigger is amazing. I never did anything to it but install it. The pull weight is a consistent 2 oz just as advertised. The bolt manipulation is just like it was with the factory trigger. It does have an extremely small amount of take up then a nice break. It does have overtravel that I talked with Bullet Central about and they tell me it's supposed to be that way and that B & A has a different way of thinking about having overtravel and no having it. I may try some things to remedy this. I credit the easier bolt manipulation on the fact they B&A offers their trigger with 3 choices of bottom sears. When I measured my cocking point to the trigger pin hole mine was close to the middle of the default 3.8mm bottom sear.
i have read where people say the bolt is harder to work because of the firing pin and/or firing pin spring. Based on my experience it is directly related to the upper and lower sear relationship and has nothing to do with the firing pin spring weight.
Some rifle characteristics that may not be know.
1. The barrel is threaded into the receiver.
2. The bolt knob has a M6X1 thread pitch. This is the same as the CZ 457. Your typical R700 knob will not fit without an adapter.
3. There's no plastic anywhere except for the spacer system for LOP adjustment.
4. The feeding is controlled round feeding, just like the Vudoo is.
5. Chamber is a match chamber where the bullet engraves the rifling.
Here are a few photos that may be of interest.
Some don't like this design because of the supposed increase lock time. IDK, I like the ease of disassembly. I will continue on with another post showing accuracy results from a few days ago.