I was looking around at .430 bullet for my muzzleloader and seen the 265gr Hornady interlock and the 265gr ftx for 444 marlin and seen posts saying they used them in 44mag carbines. Now i have had to pull 240gr xtp from cases with imr 4227 and have to bang the case because its starting to compress the charge so with these bullets appearing to be longer wouldn't that create dangerous pressure? Im trying to find a decent 44mag handi rifle bullet other than the 240gr xtp. I figured if i shot the 265-300 out of my muzzleloader i could swap with the handi rifle.
You might want to measure your COAL in your handy and compare it to whats listed in manuals. SOMETIMES they will have a long throat, and youll be able to seat the heavier longer bullets out more giving you back some powder space they would otherwise occupy if loaded to spec.
I use a lot of w296/H110 in everything from .357s and .44, to my 300aac and .458Socom, and have found it to be very well behaved, at least in the heavier loadings.
I think some folks run into problems trying to download it to much and get inconsistency there, if you want a reduced recoil load go to a different/faster powder.
Ive used both Mag primers and standards, but mostly mags.
Ive also used 4227, but not for the .44, tho i should try it i guess since ive got a pound sitting here.
I know ive seen loads for the .444 bullets in standard .44 mag cases, especially for the handys and other single shots. You may want to look around some more, and learn what the pressure signs for your particular action type, and model even, look like.
As you may end up having to work up your own data carefully, because when you start subbing in components like that your basically creating a wild cat cartridge/loading, not just a deviation of standard data.....tho now that ive thought about it ive seen data for bullets as heavy as 300grns in the .44s, never loaded any tho.