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by mtngun
Sun Feb 10, 2008 6:24 pm
Forum: pressure measurement
Topic: two strain gages on one gun
Replies: 4
Views: 6626

Re: two strain gages on one gun

Here's a picture of the Omega strain gage.

Image;
by mtngun
Sun Feb 10, 2008 6:30 pm
Forum: lever actions
Topic: Marlin 357
Replies: 25
Views: 16541

Marlin 357

f rom the old forum: A Marlin 1894 357 followed me home. http://www.mountainmolds.com/pics/m1894.jpg I stripped the original finish and gave it several coats of danish oil. The wood isn't anything to brag about, but at least now it looks like real wood, instead of brown plastic. First, I tried pouri...
by mtngun
Sun Feb 10, 2008 6:32 pm
Forum: lever actions
Topic: Marlin 357
Replies: 25
Views: 16541

Re: Marlin 357

Still haven't shot the rifle yet, but have been tinkering with it. A strain gage was mounted, hidden under the forearm. The wiring was routed out through the front of the forearm. In the unlikely event that I ever get tired of doing pressure trace experiments on this gun, the wiring could be tucked ...
by mtngun
Sun Feb 10, 2008 6:33 pm
Forum: lever actions
Topic: Marlin 357
Replies: 25
Views: 16541

Re: Marlin 357

Hello Dan, And congrats for the new rifle. Unfortunately I must say that Your rifle is not unique in the way the barrel was installed. My own 1895G was "screwed" up pretty good and assembler needed to use a shim between the barrel and the receiver. I once turned my rifle belly up disassemb...
by mtngun
Sun Feb 10, 2008 6:34 pm
Forum: lever actions
Topic: Marlin 357
Replies: 25
Views: 16541

Re: Marlin 357

Thanks for sharing that, Finn45. I thought I was the only one who had these problems, and the only one who uses epoxy to fix guns !
by mtngun
Sun Feb 10, 2008 6:39 pm
Forum: General
Topic: MGySgt's 45/90 group
Replies: 2
Views: 2368

MGySgt's 45/90 group

from the old forum: 45/90 1866 Sharps Business Rifle bore .459+, with Soule tang sight and Lyman front globe sight - Circle within Circle. Bullet 430gr GC MM of course, sized 460+ Lube Lyman Super Molly Seated to crimp grove and good roll crimp. Starline brass 41.5 grains of IMR 3031 2 grain dacron...
by mtngun
Sun Feb 10, 2008 6:47 pm
Forum: pressure measurement
Topic: WW748 in the 30-06
Replies: 1
Views: 4013

WW748 in the 30-06

WW748: a spike-friendly powder? 'Since WW748 powder seemed to alleviate the secondary spikes in a 7-30 carbine, it seemed worth trying in the 30-06, too. Since the last range session, my 20 year old can of 748 was used up and replaced by a new jug, so there may be some small differences in burning r...
by mtngun
Sun Feb 10, 2008 6:50 pm
Forum: pressure measurement
Topic: 357 rifle
Replies: 2
Views: 5934

357 rifle

This was the maiden voyage for the Marlin 1894 357. I haven't had time to make a proper 180 gr. GC mold for it, so I used a 160 gr. GC mold with 80% meplat that was laying around, based on the assumption that a GC would be needed for rifle velocities (that remains to be seen). The canted front sight...
by mtngun
Sun Feb 10, 2008 6:53 pm
Forum: pressure measurement
Topic: two strain gages on one gun
Replies: 4
Views: 6626

Re: two strain gages on one gun

More muzzle gage data, attempting to verify that the muzzle gage reads about the same magnitude of muzzle pressure as the breech gage. Here's a Barnes X as seen by breech gage #4. The Barnes X usually has little or no spike, depending on which gage is being used. Gage #4 seems to think that the Barn...
by mtngun
Sun Feb 10, 2008 6:58 pm
Forum: pressure measurement
Topic: how the pressure trace trigger works
Replies: 0
Views: 4656

how the pressure trace trigger works

Someone asked how the PT trigger algorithm works. Here is Burt Mitchell's answer: I regularly run with a trigger level of 1 or 0. I don't seem to have the bolt closing problem that many folks do. I also do my testing way out in the boonies. There aren't any electrical lines within a couple of miles....

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