Anyone out there using the BNM breech and shroud on their Discovery?

Anyone out there using the BNM breech and shroud on their Discovery?

Joined: September 22nd, 2010, 12:29 am

June 6th, 2013, 2:04 am #1

I've been struggling with POI shifts on my Discovery/Katana. I think I'm getting there, definitely had to rework the transfer port to get the breech down in front. I'd love to have a repeater with a shroud at the low fill pressure that the Discovery uses. So, what kind of accuracy do you BNM breech users get and how do you like the setup?
Thanks,
John
Quote
Share

Joined: April 30th, 2012, 11:43 am

June 6th, 2013, 1:25 pm #2

Get the rear bolt!!! First I got the side bolt and would have loved the ergonomics but that was the most difficult thing to cock ever! Had to get just the right leverage for the thing to budge. Luckily Sergio let me exchange it for the rear bolt. Now that one is buttery smooth!

I have a TKO ldc on mine but I've heard the bnm shroud is similarly quiet...
Quote
Share

Joined: September 22nd, 2010, 12:29 am

June 6th, 2013, 1:44 pm #3

If I remember right from the install video, the BNM uses a new transfer port, which hopefully will fix my POI shifts along with giving me a repeater. Thanks for the tip on the rear bolt by the way.
John
Quote
Share

Joined: April 30th, 2012, 11:43 am

June 6th, 2013, 1:58 pm #4

I'm no bench rest target shooter, so I can't really speak to well on this. But as far as plinking and pest elimination, I haven't found accuracy to be an issue. I also have a Bryan and Associates 19" crosman barrel on it now. But has been accurate enough with both...
Quote
Share

Joined: June 30th, 2011, 11:13 pm

July 12th, 2013, 2:15 am #5

I've been struggling with POI shifts on my Discovery/Katana. I think I'm getting there, definitely had to rework the transfer port to get the breech down in front. I'd love to have a repeater with a shroud at the low fill pressure that the Discovery uses. So, what kind of accuracy do you BNM breech users get and how do you like the setup?
Thanks,
John
Using a single shot tray, accuracy is quite good with a BNM breach. Using a magazine though, you may see your groups open up a little bit. Probably something you would not notice pesting or plinking, but benchresting for pinpoint accuracy, you will see some slight variation. Just the nature of magazines and friction, I suppose.
Quote
Share