Search found 1646 matches

by mtngun
Sat Feb 10, 2018 10:18 am
Forum: revolvers
Topic: S & W N-frame Project
Replies: 107
Views: 27401

Re: S & W N-frame Project

The meplat shootout continues ..... today I tested the 85% meplat with the usual control load. https://imgur.com/96uLndA.jpg Top half of the target is the solid nose 85%, bottom half is the hollow point 85%. There was a switchy 5 to 7 mph wind that may have contributed to the horizontal and diagonal...
by mtngun
Thu Feb 08, 2018 5:54 pm
Forum: revolvers
Topic: S & W N-frame Project
Replies: 107
Views: 27401

Re: S & W N-frame Project

I made a custom collet to hold 35 caliber bullets in the lathe while hollow-pointing. The collet is slower to use than a 6-jaw chuck, but unlike a chuck the collet can hold soft bullets without squishing them. At first I tried using a 1/4" round nose end mill to make the shallow hollow point, but th...
by mtngun
Tue Feb 06, 2018 4:44 pm
Forum: revolvers
Topic: S & W N-frame Project
Replies: 107
Views: 27401

Re: S & W N-frame Project

The alloy shootout continues .... Coated lino averaged 3.07". 8-) :) https://imgur.com/mxJw6E4.jpg Without a coating, lino was slightly less accurate at 3.38", and the velocity variation was slightly higher. The uncoated lino bullets left some faint streaks of lead in the middle of the barrel. It wa...
by mtngun
Tue Feb 06, 2018 3:45 pm
Forum: revolvers
Topic: S & W N-frame Project
Replies: 107
Views: 27401

Re: S & W N-frame Project

THE meplat shootout continues ..... today I tried a 62% meplat with the usual control load. https://imgur.com/hm8ND2b.jpg Results so far: 50% meplat -- 6.38" average at 100 yards 62% meplat -- 4.48" average 75% meplat -- 2.76" average Next time I will try an 85% meplat. https://imgur.com/4t4ExSs.jpg
by mtngun
Thu Feb 01, 2018 2:00 pm
Forum: revolvers
Topic: S & W N-frame Project
Replies: 107
Views: 27401

Re: S & W N-frame Project

Getting back to the alloy shootout .... Coated air-cooled reclaimed shot. As discussed in the previous post I decided to tweak the powder charge to hit 1370 fps, so these loads used 15.4 gr. WC297 instead of the usual 15.6 gr.. FYI Quickload believes that 25,000 psi is required to hit 1370 fps, so t...
by mtngun
Thu Feb 01, 2018 1:39 pm
Forum: revolvers
Topic: S & W N-frame Project
Replies: 107
Views: 27401

Re: S & W N-frame Project

Getting back to the hollow point shootout ...... The HP'd uncoated bullet shot very well so I had high hopes for the coated version. This was quenched after coating so the BHN was about 25. https://imgur.com/mcRluCX.jpg Accuracy was not so great, mainly due to a single flier. If you disregard the fl...
by mtngun
Thu Feb 01, 2018 1:09 pm
Forum: revolvers
Topic: S & W N-frame Project
Replies: 107
Views: 27401

Re: S & W N-frame Project

A new cavity, cut exactly the same as the 183 gr. BB control bullet except for a smaller meplat. This way, if it shoots different we'll know it's due to the meplat and not due to something else. https://imgur.com/wO3NRTc.jpg Aaaaand .... the 50% meplat was less accurate, 6.38" vs ~3.5" for the contr...
by mtngun
Thu Feb 01, 2018 6:42 am
Forum: alloys
Topic: Used Type Metal
Replies: 0
Views: 2000

Used Type Metal

I view type metal as a beginner's alloy and no longer use it except in my alloy shootouts. There are many flavors of type metal, and furthermore their composition may change in use as the metal gets "burnt out," so if you buy used type metal you may not be 100% sure what you're getting. With any mys...
by mtngun
Wed Jan 31, 2018 4:34 pm
Forum: revolvers
Topic: S & W N-frame Project
Replies: 107
Views: 27401

Re: S & W N-frame Project

I'm glad you enjoy reading about my adventures, Joe4065. I've been casting for 36 years and I'm still learning new stuff. That's what makes it interesting.
by mtngun
Wed Jan 31, 2018 9:24 am
Forum: revolvers
Topic: S & W N-frame Project
Replies: 107
Views: 27401

Re: S & W N-frame Project

I recut the boat tail cavity to a bevel base. https://imgur.com/akzfKgb.jpg The bevel base version of the "silhouette" bullet was not as inaccurate as the boat tail, but it was still inaccurate. A switchy 5 - 10 mph wind did not help, nonetheless there was no hint that the bullet wanted to shoot sma...