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  1. Gtscotty

    What AR15 cartridge is a worthwhile step up from 5.56?

    Kind of, area under the pressure curve is correlated to velocity more so than just peak MAP. Given that the powder selections on the market are finite it means some cartridges might have a more optimal powder available in terms of burn rate, energy density and volumetric density. LVR and CFE223...
  2. Gtscotty

    What AR15 cartridge is a worthwhile step up from 5.56?

    Yeah, that's a fairly slow ARC load, here is the chrono data for Factory 108gr ELD and my 103gr ELDx load (under book max) in my 18" gas gun.
  3. Gtscotty

    What AR15 cartridge is a worthwhile step up from 5.56?

    That's an interesting assertion, I haven't seen those velocities for Grendel in the load books or my experience loading for both. Can you post what actual load/MV/barrel length you based this on for both? Btw, the 108 ELD is often not mag constrained in the ARC, I hit the lands under mag length...
  4. Gtscotty

    12.5" 6 ARC vs. 9" 300 BLK

    Oh ok, I've used CFE223 in the Grendel before to pick up a little speed over AR-Comp and 8208, I don't remember it being a radical increase though.
  5. Gtscotty

    12.5" 6 ARC vs. 9" 300 BLK

    Can you elaborate on the extreme high velocity Grendel work you're referring to? I'm guessing something with hybrid cases or some such? My vote for the original question in the thread would be to get the 12.5" ARC, I have an 18" and 22" , and have been thinking about grabbing a 12.5" barrel...
  6. Gtscotty

    AAC "SABRE BLADE BLACK TIP"

    The shape doesn't really appear to be as BC optimized as say the TMK or HPBT, so I could buy it having a lower G1 than those. Not sure about the .361 vs .334, maybe it has something to do with where the BC is reported from, like some of the ELD vs Amax differences. Don't know that there is a...
  7. Gtscotty

    AAC "SABRE BLADE BLACK TIP"

    Did you find them on the website? I don't see product pages for any of the black tips on the PSA components page. PSA did mention that all of their AAC branded the black tips and OTMs are made "in partnership with Hornady", so if they are available and cheaper I'll definitely pick some up.
  8. Gtscotty

    What AR15 cartridge is a worthwhile step up from 5.56?

    I've been through the 6.8 SPC, 6.5 Grendel and 6mm ARC, and for the specific ask in the OP, the ARC is my preference, and honestly my favorite AR cartridge. In terms of trajectory, wind resistance, etc the ARC is the best. For my personal usage where hunting is more of a focus, I like that I...
  9. Gtscotty

    Back stop at home shooting range

    Congrats on the new house construction! Yep, it sounds like our lots are about the same size and layout, already had a fairly recent build house on mine, but we're already having to get some work done. Thanks for the data point on the dozer cost to get a berm pushed up. I talked to my neighbor...
  10. Gtscotty

    Ruger SFAR small frame 308, 6.8 pounds

    I bought my SFAR in November of '22 and sent it back before shooting it to have the issue with the gas block corrected. I don't know how common it is, but it's guess that some proportion of accuracy problems some folks have reported we're actually related to this issue. It's a pretty normal...
  11. Gtscotty

    Ruger SFAR small frame 308, 6.8 pounds

    After my issue with the gas block pressing on the handguard, which Ruger fixed pretty quickly, I really haven't had any major issues with my SFAR. It's a bit hard on brass, but not so much that it i can't reload them multiple times. It's accurate for what it is and it went hunting with me...
  12. Gtscotty

    6 ARC powder consensus for heavies in AR

    My favorite for my Grendel was ARComp, with 8208 as a second. I haven't tried either in my 6 ARCs, figured they'd be too fast for decent velocity with the heavies and the load data seems to back that up. For my ARCs, I really like LVR, it's usually available, gives top velocities with the 80gr...
  13. Gtscotty

    Back stop at home shooting range

    This is a fitting thread to pop up, I've been clearing a 100yd range on my property lately and am getting ready to order 16 RR ties to form the backstop. General plan is to stack the ties 2 deep and 8 high then pile dirt in front. The complications come by the fact that my property is...
  14. Gtscotty

    Rifle Scopes Is a Viper PST Gen 3 coming???

    This is where I am, I've gotten to where I really don't mind a SFP specifically for hunting as long as the max mag is ~10x. The reticle is still quickly useable on min mag for quick, close, low light shots without dicking around with illumination, and if I'm shooting far enough to use a reticle...
  15. Gtscotty

    Shooting 6mm ARC through a 6.5mm or 6mm Suppressor?

    My. 30 cal cans have worked pretty great on .223, 6 ARC, 6 GT, 6.5 Grendel, 6.5 CM, .280 AI, 7 PRC, .308, .30-06 and .300 WSM. If you're new to suppressors and want caliber specific cans you should get them, it might be a learning experience on why you keep getting the lovely .30 cal...
  16. Gtscotty

    Aero Solus bolt fluting?

    I just saw the other day that Aero came out with two new versions of the Solus, the Obsidian and the Lightweight, both of which have fluted bolts. https://www.aeroprecisionusa.com/solus-short-action-obsidian-540-bolt-face...
  17. Gtscotty

    7mm PRC

    It would be good to get this thread pinned in the reloading section as the 7PRC discussion thread. I wonder how to request that?
  18. Gtscotty

    Garmin Xero accessories only

    Has anyone seen a .stl for an M-Lok mount for the Garmin anywhere? This case from Thingiverse turned out pretty well, FDM is great for this kind of light duty stuff, and I've got a lot M-Lok clad rifles floating around. https://www.thingiverse.com/thing:6399976 I blurred it out for the pic...
  19. Gtscotty

    Going Away from 6 ARC Suppressed?

    With a well setup rifle 6mm ARC has impressed me with how quiet it is suppressed. Maybe I'm just used to larger cartridges, but to me ARC is substantially quieter with a .30 cal can than most things I shoot, and my ARCs are the only rifles I've had folks come over at the range and ask what they...
  20. Gtscotty

    New 6mm Advanced Rifle Cartridge

    An 8 twist might well work for 105gr hybrids or 108gr ELDs, I think I'd give it a try before throwing in the towel.
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