I've got a Bul Ultralight and I got a DSC drop-in barrel with their twin top port comp for it.
I've got a weird issue, tested it and found that the Sig Elite 124gr hollow points are accurate and shoot great, the Hornady 124gr critical duty are accurate and shoot great.
However, I cannot for the life of me find a normal fmj practice round that shoots similar POA/POI.
And one of the odd things with this new barrel combo is how far away one type of ammo may shoot from the next, it has an adjustable rear sight with 3 dashes, one on far left, one in middle, one on far right.
at 25 yards the Hornady critical duty needs to be in the center mark, so, perfect you might say. The Sig Elite needs to be all the way over on the far left hash mark.
And that's actually the most common, the Hornady Critical Duty rounds are really the only ones that shoot with the rear sight centered, most others shoot 12+ inches to the right so the rear sight needs to be moved all the way over to the left. The 115s I just tried were also about 14" low.
Thing is, I'm running about 2 1/2" sized groups at 25yds with both the Hornady critical duty and Sig Elite rounds, this is freehand as I would normally shoot but about 1 second a shot, this is great accuracy for me. I also shot some 3" or so sized groups with a couple of the practice rounds tested.
I've tried multiple 147s, 124s, and a 115 to the tune of about $200 in a bunch of different brands. Just ordered another $180 in 115s, 124s, and 147s to try.
But I'm kind of at a loss because as of yet nothing is close enough to those two great shooting defense rounds, HSTs didn't shoot as well as they did, nothing has, quite frankly, so I'd really love to use one of them.
I'm just wondering if someone has found a similar issue and maybe has some advice, both are 124gr rounds but I've been trying 115s through 147s to try and find a match, ordered some hot 1300fps 115s to try in this next batch too.
Last thing I want is to have to resort to shooting the defense rounds for practice, as I just don't have the money for that.