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Offline bikerbeans

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smokeless breech plug question
« on: November 15, 2011, 08:27:11 AM »
Hi All,
 
Anybody with a 45-70 MZ conversion using the Savage 10ML breech plug happen to know the diameter of the flash hole?  I tried smokeless powder in my conversion today for the first time, with very impressive first results, but after about a dozen shots the flash hole sooted up and I had a hang fire.  The current flash hole is .035" and this problem never happens with BH209 or other BP-subs.  I know the fire hole in a 45-70 brass is a lot larger than .035", just curious what the folks at Savage decided on for their plug.
 
thanks

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MINE:  270W, 308x444, 44 Bodeen, 410 shorty rifled slug gun, 445 SuperMag Shikari, 45 ACP shorty,  45-70 Shikari, 45 Cal Smokeless MZ, 50cal 24" SS Sidekick, 50 cal 24" Huntsman, 50 cal 26" Huntsman, 50 cal 26" Sidekick, 50-70 Govt Shikari, Tracker II 20 ga shorty, 20 ga VR Pardner, 20ga USH, 12ga VR NWTF, 12ga Tracker II shorty WITHOUT scope, 12ga USH, 10 ga  Pardner Smoothbore slug gun & 24ga Profino Custom rifled slug gun.

Offline possume

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Re: smokeless breech plug question
« Reply #1 on: November 15, 2011, 11:08:43 AM »
well i shoot a .033 ventliner and change mine out at .035 because my groups open up they make a .030 ventliner but my savage shoots the .033 the best
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Offline Busta

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Re: smokeless breech plug question
« Reply #2 on: November 17, 2011, 05:16:18 AM »
.0315" & .032" for me shooting Blackhorn 209. That is the beauty of the vent liner, you can change them out for a few bucks vs throwing away the breech plugs whin the flash hole gets washed out.
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Offline bikerbeans

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Re: smokeless breech plug question
« Reply #3 on: November 18, 2011, 06:15:46 AM »
Quote from: Busta on November 17, 2011, 05:16:18 AM
.0315" & .032" for me shooting Blackhorn 209. That is the beauty of the vent liner, you can change them out for a few bucks vs throwing away the breech plugs whin the flash hole gets washed out.

 At the range again this morning with a good cross wind but the I3031 powder works just great.  I am thinking the continued use of smokeless that the flash hole on my interference fit/epoxed brass plug is going to get a tad too large in the near future.  I think after MZ season is over I will get a savage 10ML plug and have it installed to replace my current plug.
 
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RIP Tom: Tom Nolan, ( bikerbeans) passed away this afternoon (02-04-2021).

Why be difficult, when with a little extra effort you can be impossible?

Wife's Handis;  300 BLKOUT

MINE:  270W, 308x444, 44 Bodeen, 410 shorty rifled slug gun, 445 SuperMag Shikari, 45 ACP shorty,  45-70 Shikari, 45 Cal Smokeless MZ, 50cal 24" SS Sidekick, 50 cal 24" Huntsman, 50 cal 26" Huntsman, 50 cal 26" Sidekick, 50-70 Govt Shikari, Tracker II 20 ga shorty, 20 ga VR Pardner, 20ga USH, 12ga VR NWTF, 12ga Tracker II shorty WITHOUT scope, 12ga USH, 10 ga  Pardner Smoothbore slug gun & 24ga Profino Custom rifled slug gun.
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