Low power reload

[Daryll]

Also be aware, as I've just been reminded, of the phenomina of flashover. I've never seen it or even met anyone who's seen it, but apparently it does exist. If a light charge is distributed along a large case and the primer flash ignites the whole lot at once, rather than passing the fire from grain to grain, it can build up a huge pressure peak and blow up the gun. In Rifle cases people often use kapok or tissue on top of a light charge to prevent this.

I've always considered this an "urban myth".... you said yourself, you, or anyone else you know, has never seen it... and all those of us who used to shoot 2.7 gns of BE back in the day never had a problem with it....

[Simon_S]

I using 3gr tightgroup in 357mag case with 180gr Tc work well out of my Rugger 77/357 at 50M getting some nice groups.
Don't try and use at 100 drops like brick

[svincett]

I using 3gr tightgroup in 357mag case with 180gr Tc work well out of my Rugger 77/357 at 50M getting some nice groups.
Don't try and use at 100 drops like brick

I use 2.7 titegroup in 38 & 3.1 in 357 in my lever action

Good powder

Cheers Steve

[junkyard dog]

Back in the day the favorite load for a PP1 comp with a .38 was 2.8 grn of N310 (Same as bullseye) behind a 148gn wadcutter (lead) seen many a 300 scored with that.

[sarge4318]

I've always considered this an "urban myth".... you said yourself, you, or anyone else you know, has never seen it... and all those of us who used to shoot 2.7 gns of BE back in the day never had a problem with it....

When loading light loads in 44mag cases (IIRC about 2.5gn Bullseye) I would occasionally get a round that sounded a little louder than usual and have a bit more recoil. It wouldn't make much difference on paper from the unsupported position at 25yds. I was a bit worried when it first happened but it never blew the gun up and the cartridge didn't show signs of pressure.
Whether this was 'flash-over', 'auto-ignition' or some other situation or term, I don't know.

ETA: I have twice seen when a half charge in a rifle case has caused a pressure spike large enough to flow the brass around the bolt in one case and in the other blow the bolt out of battery (half cycle the action on an AR) and blow it's magazine to pieces. I think it was only the strength of the AR system that held the rifles all together as much as it did. What you call this I don't know.

[223AI]

My trail boss 158 gr load does a massive 350 FPS from a 20” barrel......