Lapping a 1-piece mount

[jdben92883]

I lap everything I put a scope into for the obvious accuracy benefits as well as the greatly reduced marking to the optic. I was pretty surprised when I lapped a 30mm Burris PEPR mount how BAD it was!! Both the top rings and the base were pretty uneven. I know it's not an expensive base, but I would have figured at least the lower half of the PEPR would have been more true.

[TTundra]

Been there too. Its amazing at much shiny metal you see on that black mount when you're done.

Trevor

[Dave626]

yup, i've been lapping most of my rings too except the badger and NF. everytime i took out about 40% of uneven contact surfaces.

[jdben92883]

I just did a Trijicon Accupoint mount by Bobro. It MSRPs for >$300. It took off more material than I expected as well. The crazy thing about it is I mounted a new-in-box Weaver Tactical 1-5x to it and zeroed it yesterday for 100 yards on a LWRC upper. It required 1 click on elevation and 4 clicks windage to get it spot on. It was like it had already been zeroed.

[TTundra]

I just read a thread where Lynn, pretty well accomplished and awarded LR shooter, beds his rings still. Says its the only way to have 100% contact. I've never done it before, but I think Im going to do some tests. I'd also like to see a Spuhr mount lapped....see if any material comes off.

Trevor

[OpticsPlanet]

I'm a fan of DNZ products, i believe I'm up to seven as of last week.

They advertise "no lapping required" and I've found that to be the case.

Big bonus - made in the USA, in North Carolina. Go UNC Tar Heels!

Mark H.

['ol shooter]

Second the accuracy of DNZ mounts.

[klewan]

Do some accurate measurements before you start hogging out the rings. I bet it's a couple of thousandths you are removing...I'm going to measure and lap some rings, see what I get.

[Khromo]

I had gotten lazy over the last few years, and stopped lapping rings. I wasn't seeing any problems, and I hated the clean-up.

I was helping a friend mount a scope recently, and his attention to detail kind of woke me up, or maybe kicked me in the butt! I decided to go back and lap about ten sets of rings, ranging from Burris Tactical Extremes through TPS rings and up to Badger and Vortex/Seekins.

The Badgers and Vortex/Seekins rings were close, but they still needed to be lapped a bit. I was really glad I went back and got it done.

The Burris and TPS rings really needed lapping. It looked like in some cases they were only making contact over about 30% of the inner surface out of the box.

The only rings that looked like they were acceptable as they came out of the box were a set of Leupold Mark 4's.

All of those rings had seen some use, and I didn't have to do any serious trouble shooting. Nothing with too much recoil, .308 Winchester tops, and a lot of that was loaded with moderate powder charges. But some of those rings weren't making that much contact, and after seeing about ten spooky patterns over a couple of days, I decided I will never skip that step again.