Im running an AR15 with a 20" satern 5r cut barrel, spuhr 9.9mil base, burris xtrII 5-25. Handloads using 6.5mm 123gr, hornady eld-m at 2500fps.
She shoots beautifully to 1k without issue and held some phenominally small groups at 761 yards. (Strelok basic was also spot in to 1k with the dope.)
But when I attempted shots on the 1300 yard gong (fully subsonic) I discovered that I needed 3 more MILs (3.6mil iirc) than the ballistic software calculated. Is that normal for a transition into subsonic flight?
Unfortunately thay didnt have hit indicators on their 1k + targets so I was unable to see impacts very well either. Would a higher quality optic allow better resolution to see low energy impacts at 1300 and beyond (assuming minimal mirage)?
As I was anticipating, I was able to dial for all ranges and didn't have to use the reticle....
I do want to take this round to a mile and to that end have constructed some of my own hit indicators as well as currently working up a new load using berger 130s at ~2500.
What else am I going to need to be somewhat successful getting there?
PS - I am building a 300PRC which obviously will be much better at 1760., but I'd love to do this with the grendel first.
She shoots beautifully to 1k without issue and held some phenominally small groups at 761 yards. (Strelok basic was also spot in to 1k with the dope.)
But when I attempted shots on the 1300 yard gong (fully subsonic) I discovered that I needed 3 more MILs (3.6mil iirc) than the ballistic software calculated. Is that normal for a transition into subsonic flight?
Unfortunately thay didnt have hit indicators on their 1k + targets so I was unable to see impacts very well either. Would a higher quality optic allow better resolution to see low energy impacts at 1300 and beyond (assuming minimal mirage)?
As I was anticipating, I was able to dial for all ranges and didn't have to use the reticle....
I do want to take this round to a mile and to that end have constructed some of my own hit indicators as well as currently working up a new load using berger 130s at ~2500.
What else am I going to need to be somewhat successful getting there?
PS - I am building a 300PRC which obviously will be much better at 1760., but I'd love to do this with the grendel first.