Search found 1544 matches

by mtngun
Sat Mar 23, 2019 9:13 pm
Forum: General
Topic: Should we test for statistical significance?
Replies: 0
Views: 2636

Should we test for statistical significance?

Using statistics for shooting data is a good thing, but there is a growing push back against using statistics to provide "yes or no" answers. Scientists Rise Up Against Statistical Significance We should never conclude there is ‘no difference’ or ‘no association’ just because a P value is larger tha...
by mtngun
Sun Feb 17, 2019 7:15 am
Forum: design & sizing
Topic: Design myths
Replies: 0
Views: 2571

Design myths

There are many myths about selecting or designing cast bullets. In the internet age the newbie typically goes on an internet forum and asks the experts for advice. Except the "experts" are not really experts, and they give bad advice. That includes, but is not limited to, the CBA. "First thing, you ...
by mtngun
Fri Feb 15, 2019 8:53 am
Forum: General
Topic: 350 Legend Chamber
Replies: 4
Views: 2500

350 Legend Chamber

I have no clue how this thing headspaces but setting that aside, it would appear to have a good throat so it may be a good candidate for cast bullets.
Image
by mtngun
Sun Jan 06, 2019 11:30 am
Forum: General
Topic: Saeco top punches now available.
Replies: 0
Views: 2935

Saeco top punches now available.

It only took me 15 years, but I finally got around to setting up to cut Saeco-style nose punches. :lol: :lol: :lol: The price will be $25 for a fitted punch or $15 for a flat punch. You probably think that I am trying to rip you off with those prices but unlike other mold makers I don't mass produce...
by mtngun
Mon Nov 19, 2018 1:55 pm
Forum: General
Topic: Some smooth bullet designs now available
Replies: 0
Views: 3095

Some smooth bullet designs now available

The only proven advantage to smooth bullets is they fill out easier and drop out easier. Otherwise, grooves don't hurt anything and sometimes they help. The thinking behind smooth bullets is misguided and reflects a lack of understanding of bulletology. :geek: Nonetheless, some folks have asked for ...
by mtngun
Tue Oct 02, 2018 5:58 am
Forum: design & sizing
Topic: I keep getting an inside-out bullet with the design program
Replies: 4
Views: 4707

Re: I keep getting an inside-out bullet with the design program

The bottom half of the program is output-only.

There is no option for smooth bullets. They serve no purpose.
by mtngun
Fri May 11, 2018 2:22 pm
Forum: revolvers
Topic: Bradshaw-Martin SWC for Ruger 357 Maxi
Replies: 2
Views: 4164

Re: Bradshaw-Martin SWC for Ruger 357 Maxi

5 shots at 100 yards from a 10 1/2" Ruger Maxi. Shot by Lee with iron sights. Approximately 3" group. Load was 17.0 IMR4227, velocity 1409 fps. I have to admit that I did not expect the long, unsupported nose to shoot well, but this is very good. 8-) http://www.singleactions.com/images/194_gr_DB_5.j...
by mtngun
Fri May 11, 2018 1:53 pm
Forum: revolvers
Topic: Bradshaw-Martin SWC for Ruger 357 Maxi
Replies: 2
Views: 4164

Bradshaw-Martin SWC for Ruger 357 Maxi

This bullet was designed by legendary IHMSA shooter David Bradshaw and his friend Lee Martin. It was designed specifically for moderate loads in the Ruger 357 maximum. David and Lee have tested this bullet out to 200 yards with good results, as discussed at SingleActions.com . At this point I'm not ...
by mtngun
Thu Feb 15, 2018 2:18 pm
Forum: revolvers
Topic: S & W N-frame Project
Replies: 107
Views: 63354

Re: S & W N-frame Project

What's next? -- try drilling a hollow base -- try a slightly longer (say 0.050") ogive -- try a GC version that is loaded full throttle. Ross Seyfried recommended full throttle loads for his 1 MOA revolver project. -- try the control bullet with 300 MP and with Lil Gun. That's all I can think of at ...
by mtngun
Thu Feb 15, 2018 2:12 pm
Forum: revolvers
Topic: S & W N-frame Project
Replies: 107
Views: 63354

Re: S & W N-frame Project

A re-test of the coated 75% meplat with shallow hollow point. I had tested this previously but with a slightly different load that clocked over 1400 fps, so in order to give the hollow point a fair chance I retested it with the current load that clocked 1365 fps. Also, the HP was slightly different,...