Search found 1646 matches

by mtngun
Sat Jan 20, 2018 6:23 pm
Forum: revolvers
Topic: S & W N-frame Project
Replies: 107
Views: 27171

Re: S & W N-frame Project

Since the 185 gr. Keith bullet was a dud, I recut that cavity with a band near the tip of the nose, turning it into an "almost wadcutter." The thinking was that the bullet would not have to travel as far to contact the rifling. On the other hand, the aerodynamics would suffer, and that might hurt ac...
by mtngun
Sun Jan 14, 2018 7:35 pm
Forum: General
Topic: 30-06 Elk Rifle Final Chapter (we hope!)
Replies: 2
Views: 2227

Re: 30-06 Elk Rifle Final Chapter (we hope!)

Notes on the chamber specs, not that the reader cares, but I like to post the specs in my threads because otherwise I'll forget them and lose my notes. :lol: -- max case length for this chamber is 2.494", trim to 2.490". -- chamber neck is 0.336" - 0.337". Factory cases typically have 0.013" thick n...
by mtngun
Sun Jan 14, 2018 7:17 pm
Forum: General
Topic: 30-06 Elk Rifle Final Chapter (we hope!)
Replies: 2
Views: 2227

Re: 30-06 Elk Rifle Final Chapter (we hope!)

While I never experienced an unintentional discharge with the stock Remington trigger, on the other hand I was never able to dial in a satisfactory trigger pull while maintaining reliable functioning. After reading Jack Belk's book about all the things that can go wrong with the Walker trigger i opt...
by mtngun
Sat Jan 13, 2018 7:06 pm
Forum: revolvers
Topic: S & W N-frame Project
Replies: 107
Views: 27171

Re: S & W N-frame Project

Testing the bevel base bore riders .... https://imgur.com/dNEMZch.jpg.jpg The 180 gr. teased me by shooting my first sub 2 inch group, but after that it went crazy, with too much velocity variation and too many vertical fliers. I'm not sure what caused it to fail but this design was definitely a ste...
by mtngun
Sat Jan 13, 2018 6:23 pm
Forum: revolvers
Topic: S & W N-frame Project
Replies: 107
Views: 27171

Re: S & W N-frame Project

SHOOTOUT between a smooth bullet and a grooved bullet. I went into this shootout very prejudiced because I had previously experimented with smooth coated bullets in a rifle and the smooth bullets would not even stay on the target. In general, grooves were very important in rifle bullets especially a...
by mtngun
Thu Jan 11, 2018 2:53 pm
Forum: General
Topic: 30-06 Elk Rifle Final Chapter (we hope!)
Replies: 2
Views: 2227

30-06 Elk Rifle Final Chapter (we hope!)

I started this project in 2005, then got very busy so the project gathered dust for 13 years. :lol: :lol: :lol: This M700 started out as a lightweight elk rifle. Then for several years it was used to test hi-velocity cast bullets. The factory 10" twist barrel with its sloppy SAAMI chamber neck was n...
by mtngun
Tue Jan 09, 2018 3:05 pm
Forum: revolvers
Topic: S & W N-frame Project
Replies: 107
Views: 27171

Re: S & W N-frame Project

Since the 180 gr. bore riding GC shot decent even though it was a "bastard" design, I want to try some more bore riding designs, so here's a couple of new bullets to play with, er, I mean test. The new bullets have a crimp groove in the right place even though I'm not planning to crimp them. If noth...
by mtngun
Mon Jan 08, 2018 1:25 pm
Forum: revolvers
Topic: 300MP vs WW296 vs WC297 vs H110
Replies: 4
Views: 1786

Re: 300MP vs WW296 vs WC297 vs H110

Another comparison of WW296 to WC297, however with different cases so it was not 100% apples to apples: -- 20.6 gr. WW296, coated 140 gr. GC, CCI 550, RP nickel cases, 1806 fps predicted by QL, 1682 fps actual, 56 ES, huge fireball! :twisted: -- 20.6 gr. WC297, coated 140 gr. GC, CCI 550, WW nickel ...
by mtngun
Sun Jan 07, 2018 3:14 pm
Forum: revolvers
Topic: S & W N-frame Project
Replies: 107
Views: 27171

Re: S & W N-frame Project

As if I did not have enough things to worry about, there's this. :? The end of the barrel is square and true, and the other two barrels yield similar results, so the barrel is not to blame. The problem is that there is angular misalignment between the cylinder and the barrel. UPDATE: I measured the ...
by mtngun
Sun Jan 07, 2018 2:54 pm
Forum: revolvers
Topic: S & W N-frame Project
Replies: 107
Views: 27171

Re: S & W N-frame Project

CRIMP SHOOTOUT using the 180 gr. BB control load. Neck tension can influence the case's grip on the bullet even more than crimp. Many expander spuds are too big for my taste and end up getting modified so that they barely touch a sized case. https://imgur.com/30CRYbM.jpg A homemade die was used for ...