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I don't think it's necessarily unsafe, but I would burn them in the winter if you have pretty cold conditions, not that 8208XBR really cares that much about large temp swings. It's a great powder for not being temp-sensitive.
My main concern is that with the MLGS PSA barrel, you'll be unlocking a lot earlier, however 8208XBR burns fast so port pressure may or may not be excessive. The cold weather helps keep the gas system tamed a bit as well.
If their port was cut larger than .076" and it was hot outside, there's a much higher chance that the timing of the system would be out and you'd have early unlocking, which might not even show up with any effects on reliability, but will be adding excess shear load to the lugs rotationally (as opposed to alignment with the bore axis, i.e. bolt thrust).
A lot of forum members dating back really latched onto 8208XBR once they saw how consistent it was and plenty have found pet loads with 120-123gr bullets, but there is a wall you will see where it departs in an upward spike on a trend line if you run a pressure ladder over a chrono.
That departure area with 123gr bullets like the SMK, Scenar, A-MAX/ELD-M, and SST is usually in the 27.8-28.5gr region, chamber/components/conditions-dependent.
It's a lot more forgiving and ideal with 100gr bullets like the 100gr NBT, 100gr A-MAX, ELD-M, as well as the 107gr SMK. I really like it under the 100gr NBT and 107gr SMK.
As long as you stay away from the departure window with 8208XBR, you can load it to your heart's content, but you really should have your chrono replacement so you can do a pressure ladder in .3gr increments and find where that place is.
I'm pretty sure PSA has a parallel conventional freebore, so that will help you out a little. It's hard to pull a load like that when it groups so well, so part of me wants to say just shoot them, and the other says I don't want to see you come back with a broken bolt.
My main concern is that with the MLGS PSA barrel, you'll be unlocking a lot earlier, however 8208XBR burns fast so port pressure may or may not be excessive. The cold weather helps keep the gas system tamed a bit as well.
If their port was cut larger than .076" and it was hot outside, there's a much higher chance that the timing of the system would be out and you'd have early unlocking, which might not even show up with any effects on reliability, but will be adding excess shear load to the lugs rotationally (as opposed to alignment with the bore axis, i.e. bolt thrust).
A lot of forum members dating back really latched onto 8208XBR once they saw how consistent it was and plenty have found pet loads with 120-123gr bullets, but there is a wall you will see where it departs in an upward spike on a trend line if you run a pressure ladder over a chrono.
That departure area with 123gr bullets like the SMK, Scenar, A-MAX/ELD-M, and SST is usually in the 27.8-28.5gr region, chamber/components/conditions-dependent.
It's a lot more forgiving and ideal with 100gr bullets like the 100gr NBT, 100gr A-MAX, ELD-M, as well as the 107gr SMK. I really like it under the 100gr NBT and 107gr SMK.
As long as you stay away from the departure window with 8208XBR, you can load it to your heart's content, but you really should have your chrono replacement so you can do a pressure ladder in .3gr increments and find where that place is.
I'm pretty sure PSA has a parallel conventional freebore, so that will help you out a little. It's hard to pull a load like that when it groups so well, so part of me wants to say just shoot them, and the other says I don't want to see you come back with a broken bolt.
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