01-23-2024, 01:32 AM
^^^ Now those are some nice groups. I wonder if your OAL being kinda long (2.260"?) really makes a difference. I honestly haven't concerned myself with it in my loads so far. Mine fit in the mags, just barely, and that's what I've cared about. I load mine to just a hair under 2.250" maybe? I'd have to look at what I wrote on the box. I know that it's not really about the OAL, but about the length at the ogive and all that. I don't want to turn this into a discussion about ogives and lands and such.
Not that I'm super proud of this group below, but it shows the potential of AA2520 in my 20" DMR barrel. Same bullet 123gr ELDs as above, same cases, Hornadys I think. Rem 7-1/2 primers, which is all I use for my "precision" Grendel loads.
A lot of the groups I shot with the 2520 workup strung out a bit vertically like this. I attributed this to holding my stock a little bit too loose that morning after having shot a while. I shoot prone off a bipod, just wearing a tee shirt, and my shoulder was starting to get a little tender by this time. Even with just a Grendel. I think I began to lose my consistent hold.
But anyway... Ave. velocity of this load (29.6 gr) was 2462 fps. SD was a little tighter at 8.9. This 5-shot group is less than 1/4" wide. Vertically it's just over 1 inch, which I attribute at least partly to my sloppy hold, like I said. I think it's got potential. Enough that I have 50 more rounds of 123 ELDs loaded up with 29.5 gr of AA2520 to try, as soon as I can get back out to the desert.
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Not that I'm super proud of this group below, but it shows the potential of AA2520 in my 20" DMR barrel. Same bullet 123gr ELDs as above, same cases, Hornadys I think. Rem 7-1/2 primers, which is all I use for my "precision" Grendel loads.
A lot of the groups I shot with the 2520 workup strung out a bit vertically like this. I attributed this to holding my stock a little bit too loose that morning after having shot a while. I shoot prone off a bipod, just wearing a tee shirt, and my shoulder was starting to get a little tender by this time. Even with just a Grendel. I think I began to lose my consistent hold.
But anyway... Ave. velocity of this load (29.6 gr) was 2462 fps. SD was a little tighter at 8.9. This 5-shot group is less than 1/4" wide. Vertically it's just over 1 inch, which I attribute at least partly to my sloppy hold, like I said. I think it's got potential. Enough that I have 50 more rounds of 123 ELDs loaded up with 29.5 gr of AA2520 to try, as soon as I can get back out to the desert.
[ATTACH=CONFIG]20227[/ATTACH]