30 December 2019
I am new here as well, but wanted to Welcome you here as well.
I am interested in reading about these larger caliber air rifles too, since I am only familiar with the .177 & .22 ones.
If you get the time & have the inclination, Please consider taking the time to post up a bit of a description of the larger caliber airguns & how things work out for you on using them when casting projectiles yourself, instead of just buying "ready made" ones.
I think it would be very interesting to read about the differences you find, just like the differences between jacketed & cast bullets that many of us other shooters of powder using firearms experience. At least I think it is interesting anyway.
Once again, "Welcome" !