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I had forgotten 5744, thanks the _shootist.


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Trailboss..........Unique


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U L T R A M A G A !

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Originally Posted by TexasShooter
I tried some loads of 405 Remington FNSP using large rifle CCI primers over 15.2 grains of Unique yesterday. I had several Failures to Fire even though the primers were clearly struck hard. Plus, among those that fired I had sticky extraction. The primers were not flattened and the brass looked OK but I think I was experiencing high pressure spikes. I put those loads away and will disassemble them this week. I am going to stick with my H4895 loads. They shoot dirty like Remington's trapdoor loads but are well-mannered and appear accurate.

T.S.



I experienced powder bridging throwing Unique in a rifle powder measure. I was trickling the last bit of powder so it was obvious right away. I broke out the old school Lee dippers, and dipped/trickled.

I don't know if you may have possibly been having powder bridging issues, but I have never had inconsistent ignition or indicators of pressure using Unique with the 405gr cast bullets.

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Originally Posted by rustyzipper
I had forgotten 5744, thanks the _shootist.



Pretty versatile powder.


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Anyone done further shooting?


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Originally Posted by MontanaMarine
Originally Posted by TexasShooter
I tried some loads of 405 Remington FNSP using large rifle CCI primers over 15.2 grains of Unique yesterday. I had several Failures to Fire even though the primers were clearly struck hard. Plus, among those that fired I had sticky extraction. The primers were not flattened and the brass looked OK but I think I was experiencing high pressure spikes. I put those loads away and will disassemble them this week. I am going to stick with my H4895 loads. They shoot dirty like Remington's trapdoor loads but are well-mannered and appear accurate.

T.S.



I experienced powder bridging throwing Unique in a rifle powder measure. I was trickling the last bit of powder so it was obvious right away. I broke out the old school Lee dippers, and dipped/trickled.

I don't know if you may have possibly been having powder bridging issues, but I have never had inconsistent ignition or indicators of pressure using Unique with the 405gr cast bullets.


Montana, the loads were correct and consistent. Since they were so light, I trickled each one. But, thanks for the caution. I have not tried any more loads with Unique. I'm staying with H4895. It's not "cat sneeze" but it's pretty quiet.

Thanks to all for your contributions to this thread!

T.S.

Last edited by TexasShooter; 12/09/18.

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tag


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I would never ever shoot any lubed cast bullets in a Hybrid....

Loading for sub-sonic rule of thumb is minimum 60% of available case volume with bullet seated as close to 100% powder burn in your barrel length. A accumulation of too much unburnt powder in your suppressor can cause a secondary detonation.

I've done a lot of sub-sonic work with the 450 Bushmaster and 45-70....best powder is Trail Boss 100% burn in a couple inches of barrel. Load densities start at 70% you can load up to 100% and do not compress powder.

Some great bullets available for sub-sonic....Makers Bullets....https://makerbullets.com/products.php?cat=3&scri=64
Outlaw Bullets...http://www.outlawstatebullets.com/4.html
Remington 405 gr. cup-core

In your 45-70 a Remington 405 gr. cup-core with 13 gr. of Trail Boss is sub-sonic at 1010 fps in a 16" barrel at 70 F 785' elevation 30% humidity, .5 gr. more depending on conditions may be above sub-sonic. Its very quit had a guy at the range ask me what kind of air rifle it was....lol... Ruger #1

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Thanks. That's good info!

T.S.


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I have the 500 grain RCBS mold. I haven't been able to get that bullet to stabilize in my Marlins below about 1200 fps. Maybe my alloy...

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Originally Posted by Fred1950
I have the 500 grain RCBS mold. I haven't been able to get that bullet to stabilize in my Marlins below about 1200 fps. Maybe my alloy...


I doubt the alloy has anything to do with it. It really just boils down to velocity and twist rate.


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Originally Posted by Rustyzipper
Anyone done further shooting?
Old thread, but my experience with the new 410 gr Hornady Sub-X bullet is that it takes 14.5 gr of Unique to push it at 1050 fps. I tried 10.5, 11, 11.5 … and so on until I got the magic number.

This is in the Henry X 45-70. Accuracy is good. I’m using a 4x scope and getting 2” @ 100 yards. I’d like better, but let’s be honest … I’m not shooting much farther that 125 yards with this load due to a massive drop after 100. Of course, YMMV.

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I was just shooting Hornady Subsonic in my 45-70 last week. Very pleasant and very accurate

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Originally Posted by moosemike
I was just shooting Hornady Subsonic in my 45-70 last week. Very pleasant and very accurate
Reloads? Or their loaded ammo?

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Factory ammo

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Many years ago I bought an old Lyman 255 grain mold that actually threw bullets some where close to .456 in one cavity and .457 in the other. Both leaded my pistol barrel like crazy, so rather then throwing the mold away I tried the bullets in my 45=70 with light charged of Unique. Worked like a charm with 13 grains od Unique with a 2 inch square of TP or Kleenex to hold the power in place. Little noise, no recoils, accurate and 50 rounds didn't cost much, and was a lot of fun. Youngsters liked shooting a big bore that didn't bite.


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Unique isn't position sensitive. No tampon needed. I still tilt the firearm vertically before commencing fire.

Liking ~14 gn with a 405 cast.


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Originally Posted by SheriffJoe
Unique isn't position sensitive. No tampon needed. I still tilt the firearm vertically before commencing fire.

Liking ~14 gn with a 405 cast.

Never tried not using the wad of paper in the 45-70 for very light loads.


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I have been loading Unique in the 45-70 since 1975 and never had a misfire, and never used a filler/wad.

All the way down to 12 grains.

Just goes to show one man's meat is another's poison. You wouldn't think this would be the case...but other variables enter into the picture.

It's why we experiment....


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Originally Posted by Buffalobwana
Originally Posted by moosemike
I was just shooting Hornady Subsonic in my 45-70 last week. Very pleasant and very accurate
Reloads? Or their loaded ammo?


Those loads are "unobtainium" right now, I would like to try some in my new Marlin Trapper/Hybrid46 combo. I ordered the 410gr Sub-X bullets to roll my own and have Unique or AA5744 to work with, have not been able to locate Trailboss locally.


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