256 falcon pressures
Dave338
[subject]
Saturday, August 15, 2026, 17:08 (9 days ago)
Been having pressure issues with my 256 falcon. Talked to Gary about it last fall and finally got around to trying things. New brass, 33 grains of 2230 100 grain speer hotcore bullet, standard large rifle primers. Does this primer look flattened?![[image]](images/uploaded/202608160006356a80ff0ba88f4.jpg)
The edges of the indentation are just crisp.
WB
[subject]
Saturday, August 15, 2026, 17:34 (9 days ago) @ Dave338
I’d think a good place to stop. However, it’s not centrally hit?! It’s not folly closed? You can experiment with longer seated bullets too but don’t get into the rifling when closed. It will unload the round for you! Seating just off the lands fully closed will give max case capacity and lower pressure some.
Off center hit
Dave338
[subject]
Saturday, August 15, 2026, 20:15 (8 days ago) @ WB
This barrel has always hit off center, ive sent it to gary and he said he didn't see anything wrong with the barrel
I have a few barrels that hit offcenter also
Sean Harper
[subject]
Monday, August 17, 2026, 13:11 (7 days ago) @ Dave338
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I have seen that in semi-autos.
Jim Taylor
[subject]
Monday, August 17, 2026, 13:28 (7 days ago) @ Sean Harper
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Pressure
Dave338
[subject]
Saturday, August 15, 2026, 20:24 (8 days ago) @ WB
What do you think about the line towards the base of the brass![[image]](images/uploaded/202608160323426a812d3ee8cf6.jpg)
On custom TC’s I’m always careful to just
WB
[subject]
Sunday, August 16, 2026, 17:54 (8 days ago) @ Dave338
Push the shoulder back far enough to easily lock on a chambered case. Of course check your loaded rounds too. The safety interlock won’t allow cocking unless the action is completely locked.
The less you move that brass/shoulder the longer the brass will last. It’s headspacing on only the rim for that initial fire-forming. After that, it’s on the case shoulder. Minimal movement on resizing will greatly help. I once full length resized full power hunting loads for use in two different guns. I wanted the ammo to fully interchange. (.338 GNR) it sure did cut case life. My first failure was indeed at the case web. A bright ring, pushed further it usually showed a split or maybe could separate completely. If you work the brass hard it lasts less. My rear locking lug .218 Bee (Win. M43) will only tolerate 3-4 95-100% max loadings. If I back down to 80-85% full power I can get 6-8, or more loadings from the tiny thin cases.
Rock on and see how it goes. Take your gun to the load bench to test fit while sizing cases. Allow you a little extra past just closing to allow for a little error after seating. Use safety precautions of course.
I never could get .25-35 Win. To fire form without splitting. But it does shoot it, for emergencies hunting, ruins the cases. I make .300 GNR from them.
I would dump that piece of brass with the
Gary Reeder
[subject]
Thursday, August 20, 2026, 09:04 (4 days ago) @ Dave338
line on it. That is normally just prior to it coming apart.