How are you guys blueprinting these actions? I was going to indicate off raceway, true face up and open threads a little.
Thanks guys,
Kc
Thanks guys,
Kc
Gunsmithing Weatherby Mark 5 action truing
- Thread starter ugsly
- Start date
I build on my fair share of Weatherbys. While you can do that I have found that most Mark 5's are pretty darn straight as they come. I did recently find one with the scope screws out of line with the bolt raceway but the threads and action faces were right on. Maybe I have just been lucky?
I can't speak for SS but I mix a little slop on a slope and use it to lap them;-)
What part of yankeeland are you from pp2?
Last edited:
^No yankee here! The last time I checked Tennessee is well below the Mason-Dixon line! Prior to mixing up your Sloppy Joe concoction and start the lapping process, I think it would be safe for me to assume you ran some dye, and found out how much "slop" there was! Even if you were sitting on a slope, when you examined the lugs, did you find they were all in contact? I've read a couple of times, that not all the lugs are in contact (as delivered from factory), based only on the lugs that had a "shine", as compared to the others. What's been your findings?
Last edited:
If I was building a personal Mark 5 I wouldn't touch them. The purpose of truing and lapping lugs is to get good contact on each lug. This is important on a two lug action as having one not touching can cause a vibration during firing when that bolt comes up under the pressure of firing. On a 9 lug action it is far less important that each and every lug be wearing hard. I just do a light lapping and when it looks to be hitting 75 percent or so you are good. It doesn't take much. I believe you can do more harm from over lapping them than not enough. When the bolt and action are Cerakoted it is even less important as the Cerakote takes up a lot of the bolt clearance and combined with the extra large bolt diameter makes for a very well supportted bolt and it just doesn't jump around much on firing. The quality of the barrel, crown and bedding are far more important than having 2 or 3 out of 9 lugs not touching very much. This opinion is based on personal experience building on Mark 5 actions. They are my favorite factory action.
Similar threads
