All of the powders I mentioned can be downloaded to the point of sticking the bullet in the barrel because it's going too slow, unlike powders like H110/W296 which should be reserved for magnum loads, not reduced loads.

The deep seating will add a little more pressure than at a nominal length but these are big case & it has less affect than if you deep seated in a 9mm, 40S&W, or 45ACP, with these reduced charges.

Hodgon's LongShot data, & Alliant's/Speer's Power Pistol load data was obtained using a 350gr bullet. You're using a lighter 335gr bullet, so no real need to become a mathematician.

Hodgdon's starting L-S load (21.0gr) is listed at 41.4K psi. You're starting "reduced" load will be far below that. All the primers in my reduced loads have rounded corners & rounded firing pin strikes. All you have to do is compare a fired factory load's primer to the reduced load to see the difference.

Even when using Large Pistol primers, with these reduced loads of moderate speed powders, they will be rounded too.

If you start seeing something different you're doing something wrong with your reduced loads. Stop & resolve the issue.

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