Bob Baker told me once they had tested the guns and cases up to 90,000 PSI. And if I remember right John taffin had done an article on the 454 and some of the ammo was hitting 70,000 PSI, and that is hot.
So my 410 GNR and 429 GNR are mild compared to those rounds. They are still too hot for a standard size 6 shot cylinder but a good well made 5 shot cylinder handles them very well. Nothing is idiot proof but using loads listed in the reloading manual your pressures are fine. Hot but OK.
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Gary, fo you have a GNR round based on the 45 LC case? (nm)
- Grover Sr, 2018-10-20, 12:01
![[*]](themes/default/images/complete_thread.png "Open whole thread")
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no, I went with the 44 Magnum as at the time it was
- Gary Reeder, 2018-10-20, 12:30
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Of course his .410 and .429 GNR's are on the .454 case
- WB, 2018-10-20, 21:47
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I have a 356 GNR. With spare cylinder in 357
- Grover St, 2018-10-21, 07:55
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the 454 case is intended to use small rifle primers
- Gary Reeder, 2018-10-21, 11:44
- 10-4, it will be one of your package guns so magnum - Grover Sr, 2018-10-21, 15:25
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the 454 case is intended to use small rifle primers
- Gary Reeder, 2018-10-21, 11:44
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that 454 case was designed to handle extremely hot rounds
- Gary Reeder, 2018-10-20, 22:11
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I really like the 410 GNR. May add another one day (nm)
- Kyle, 2018-10-20, 23:42
- I use small pistol magnum rimers in the .429 GNR - WB, 2018-10-22, 06:36
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I really like the 410 GNR. May add another one day (nm)
- Kyle, 2018-10-20, 23:42
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I have a 356 GNR. With spare cylinder in 357
- Grover St, 2018-10-21, 07:55
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Of course his .410 and .429 GNR's are on the .454 case
- WB, 2018-10-20, 21:47
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no, I went with the 44 Magnum as at the time it was
- Gary Reeder, 2018-10-20, 12:30