Search found 1654 matches

by mtngun
Thu Feb 07, 2008 3:31 pm
Forum: General
Topic: Cast Bullet Velocity Parameters
Replies: 2
Views: 4452

Re: Cast Bullet Velocity Parameters

My experience with wads is limited to a few experiments with NECO wads under gas checked bullets. If I remember correctly, the wads didn't help things one iota, so I didn't pursue them further. Gas checks make life far easier, even at lower velocities. Plain base rifle bullets are for someone who ju...
by mtngun
Thu Feb 07, 2008 2:17 pm
Forum: revolvers
Topic: BFR 500 S&W
Replies: 0
Views: 5568

BFR 500 S&W

Here is a customer's design for the BFR 500 S&W. This design will NOT chamber in S&W revolvers. For S&W's, shorten the nose to 0.690" or thereabouts.. I can't vouch for the measurements -- you might want to verify the bore diameter, for example -- but overall this looks like a decent design that "ta...
by mtngun
Wed Feb 06, 2008 7:45 am
Forum: General
Topic: snowed in
Replies: 5
Views: 5824

snowed in

I've been snowed in for a week and a half. It might be another week and a half before I can drive to town.

Mold production continues, however, there is no way to ship molds to customers.

I would post some pictures but all you can see is white. :P
by mtngun
Mon Feb 04, 2008 6:40 pm
Forum: pressure measurement
Topic: two strain gages on one gun
Replies: 4
Views: 8170

Re: two strain gages on one gun

This data was taken with gage #2, as discussed on another thread, and no adjustments were made to the calibration even though the validation load was 5000 psi high. In other words, I believe the pressures shown here may be about 5000 psi higher than the true pressures. http://www.mountainmolds.com/p...
by mtngun
Mon Feb 04, 2008 6:33 pm
Forum: pressure measurement
Topic: two strain gages on one gun
Replies: 4
Views: 8170

two strain gages on one gun

from the old forum: Since the last range session, I mounted a second, new strain gage on the 30-06. It is located in the same place as the other gage, except the old gage is on top of the barrel while the new gage is on the bottom. In theory, they should give the same results, but I was concerned t...
by mtngun
Mon Feb 04, 2008 6:27 pm
Forum: pressure measurement
Topic: Cast in 7-30 carbine
Replies: 3
Views: 5996

Re: Cast in 7-30 carbine

from the old forum: This post is going to talk about my experiences with the pressure trace system in boring detail, but some of you who are also learning to use the pressure trace or who are thinking about buying a pressure trace may find the details useful. Since last time, I repositioned the gag...
by mtngun
Mon Feb 04, 2008 6:15 pm
Forum: pressure measurement
Topic: how not to attach a strain gage
Replies: 0
Views: 5996

how not to attach a strain gage

from the old forum: Some of you will probably get a Pressure Trace eventually so maybe you can learn from my mistake. :oops: You are only supposed to use particular adhesives to attach the gages. The instructions make that quite clear. Most of the approved adhesives are priced as if they contained ...
by mtngun
Mon Feb 04, 2008 6:10 pm
Forum: hi velocity
Topic: Paper patch in 30-06: with and without a GC
Replies: 3
Views: 10123

Paper patch in 30-06: with and without a GC

from the old forum, some parts were lost in the move to the new server so the thread seems to ramble: Today I tried paper patching a 165 gr hollow point. This bullet started out as a conventional lubed bullet, more or less a loverin design, that I had shot last year and it shot about as well as any...
by mtngun
Mon Feb 04, 2008 6:05 pm
Forum: revolvers
Topic: plain base bullets in the wheelgun from hell, continued
Replies: 3
Views: 6440

plain base bullets in the wheelgun from hell, continued

In yet another valient effort to get plain base bullets to shoot well in my 4" S&W M29 with the 0.4336" throats, today I tried using Rooster HVR lube, instead of the homemade lube EL#3 that was used in the previous experiment. Rooster HVR has been the cleanest lube tested to date in other cartridges...
by mtngun
Mon Feb 04, 2008 6:02 pm
Forum: pressure measurement
Topic: Cast in 7-30 carbine
Replies: 3
Views: 5996

Cast in 7-30 carbine

From the old forum: Today was Christmas, Fourth of July, and my birthday all rolled into one, because my pressure trace arrived !!!! :lol: I mounted one of the strain gages on a 7-30 TC carbine, just because the TC is amenable to mounting a gage. This gage was mounted with superglue so that it could...