RBHarter
West Central AR
I read but didn't retain over the last day or so .......
Have you tried segregated brass, primers , LG vs sm and aberrantly hard alloys ? As many trials as it sounds like you probably have . My current experience with acp class cartridge rifles is limited but currently the revolver isn't sharing a load/bullet with the carbine there are a couple close but none that are great in both.
I suggest the alloy because I had an alloy that was great for a 9mm and 357 AC but it had to be WC to work in a 40 S&W . I had a 45 Colts RBH and 92' . The the RNFP 255 was a ringer in both hot or deference loads in both but the 1st SWC wouldn't shoot for beans in the 92' in more than a cowboy load . It was the bullet. I've had several occasions where a gun just didn't like a particular case or primer also. Have you tried heavy weights or lights in it . It might surprise you with a "back pressure" hum solution by going to a heavier bullet that better mimics the acceleration curve of the jacketed 230 gr ball.
In my little time spent with the AR platform it seems to be in some cases driven by what a nominal load should do in terms of the maximum nominal loads that are consistent. If the acceleration curve is close and the pressures are correct they tend to be more consistent.
Maybe a lighter bullet with a faster powder loaded to a barely cycling load or even a heavyweight with a fast powder loaded to +P vs a square nominal load .
Have you tried segregated brass, primers , LG vs sm and aberrantly hard alloys ? As many trials as it sounds like you probably have . My current experience with acp class cartridge rifles is limited but currently the revolver isn't sharing a load/bullet with the carbine there are a couple close but none that are great in both.
I suggest the alloy because I had an alloy that was great for a 9mm and 357 AC but it had to be WC to work in a 40 S&W . I had a 45 Colts RBH and 92' . The the RNFP 255 was a ringer in both hot or deference loads in both but the 1st SWC wouldn't shoot for beans in the 92' in more than a cowboy load . It was the bullet. I've had several occasions where a gun just didn't like a particular case or primer also. Have you tried heavy weights or lights in it . It might surprise you with a "back pressure" hum solution by going to a heavier bullet that better mimics the acceleration curve of the jacketed 230 gr ball.
In my little time spent with the AR platform it seems to be in some cases driven by what a nominal load should do in terms of the maximum nominal loads that are consistent. If the acceleration curve is close and the pressures are correct they tend to be more consistent.
Maybe a lighter bullet with a faster powder loaded to a barely cycling load or even a heavyweight with a fast powder loaded to +P vs a square nominal load .