Magnum large pistol primers in 45ACP?

[tomtomtomtom]

Hi, Sorry if it's been asked before...couldn't find it in search.
I've used 4.75 g Bullseye (3.8-5.3) to load my 230 FMJ 45ACP. As everyone knows, primers are scarce. I was able to pick up 1000 Federal magnum pistol primers. Should I start off using min load and work up or just back off a few grains from the 4.75 that I have used in the past? ..appreciate any feedback.

 

[TrashcanDan]

It might dislodge a little quicker, but thats about it.
.45 isn't breaking any pressure barriers even at +p
Short case, not a whole lot of volume. Zero issues using winchester l.p., and they cover standard and mag applications.

Load up 5 and let er rip