Recent content by carlos_hathcock

I think if I were to do this again I would use an epoxy less viscous than JB Weld, like maybe West System epoxy. The small clearance between liner and carbon sleeve makes me think the thick JB Weld may have left voids between the two, but that's just a guess.

I’ve been wondering about a moderator with a small chamber filled say 50% with a fluid or a gel. Would it have some beneficial damping effect. Imagine filling such a thing with magnetic fluid and making it tunable like a magnetorheological shock absorber in a performance car.

Scrubbed the bore with a bronze phosphor brush after treating it with CLR for 30 minutes (something I read in an article by a world-class PB bench rest star). Bore at the muzzle looks much better and yes, the liner has twist. Can't wait to shoot it at 100 yards to see if it has improved. I...

There is a complete o-ring list for your rifle here on the forums, just need to search. I took that info to Oringsandmore and for $32 including shipping got a lifetime supply. Not a one time rebuild kit but like 10-20 of each needed.

Subscriber, I doubt the rifling at the muzzle end lacks twist, but I’ll snap a photo when I pull it apart for scrubbing. Not much will show though, since I’ve bonded a carbon sleeve to the liner. Twist is I think 1:24 so quite slow. One magical day, I got five MOA and smaller groups at 100...

So I've been using Ballistol wet patches, followed by dry ones pulled through with a Patchworm. I mostly shoot slugs in the 27 grain range with a few JSB MRD’s out of my choked standard FX liner. I'll follow that up with some Trewax because if it's good enough for Motorhead, it's good enough for...

My stock M3 700mm 22 cal can use about 125 bar of reg max. I would need a heavier hammer/different spring to make use of more pressure.

Gee, I would have to go back and read through my posts but I hope I haven’t been rude here and ghosted anyone. I always search before asking but at work the “thank you” emails just makes for another email. I get that it’s the social grease but like on a Zoom meeting I quickly become aware that I...

https://www.airgunnation.com/threads/impact-m4-sling-attachment.1318332/

Does anyone have a suggestion as to how to permanently mark the muzzle? After indexing years ago I scratched the index mark on the outside of the liner, but it’s not visible with the muzzle nut installed. I’ve used both paint and marker but they’re only good for one assembly. Since the liner...

Same rifle and I’ve had good results at 960-970 FPS shooting the MRD. Regularly one hole at 50 yards.I don’t think you’ll need 2nd reg above 110 bar, but try lower first.

My Athlon Ares BTR 2.5-15X 50mm FFP goes down to 10 yards, which is why I selected it. I would have preferred the higher magnification model but parallax goes up to 30 yards. About $730 at Optics Planet just now. Have been very happy with it.

I don’t see a problem with someone tacking a new question onto an old thread as long as it’s about the same subject. The opposite of that would be a whole bunch of threads and questions about the very same thing, just separated by time. I believe this site even asks if there is a thread about...

The Impact was my first and only PCP so I think if you like the rifle and tinkering you’ll be fine. I have to say that your projectile is light for such a powerful weapon. It’s like you bought a cannon but your preferred ammo is dried English peas. Shoot what you want but I think your plenum...

I would turn your valve out to where five or 5 1/2 lines would be. I think that may be limiting your velocity. While tuning/balancing regulator and hammer I don’t think you want the valve to come into play. Use the valve after regulator and hammer are set to trim a little extra air/velocity...