Been getting some weird fliers lately that I couldn't explain, tried reworking my go-to load by changing seating depth/powder charge/etc all to no avail. In the middle of this I started losing primer pockets on my RP brass (8x fired) so I had to switch over to WIN 243 brass and start my loads from scratch. Same story here with the weird fliers on loads that should have hammered, and did on previous outings. I broke out the chrono yesterday and ran my old standby load of 43gr H4350, RP Brass, and a 140 Hornady BTHP across it. It used to run 2720 fps (20" barrel) with an ES in the 12-15fps range, yesterday was 2670 and the ES was in the upper 20's with the same lot of powder, same lot of bullets, and same brass prep. Temps were within 10 degrees of when I last chrono'd the load.
While I haven't had the barrel borescoped, it is approaching 3K rounds so I figure it's on it's last leg. For a prefit AAC barrel it has worked out very well, but I guess it's time to screw on a better one and have the action trued up while I'm at it. I'm going to miss out on the matches at Woody's this summer, and probably fall as well, so I may as well make it worth it. I can't just whip out $600-$700 for a new barrel and 'smithing, so it'll likely be next year before this even happens.
I you were building within the following parameters, what would you build? Keep in mind the gun will be used mainly for tactical matches and range use that will push the round count up to around 1K-1200 rounds a year. I'd really like to get 2 seasons out of the barrel, 3 would be even better.
R700 short action (.473 bolt face)
22"-24" barrel (not including brake)
6, 6.5, or 7mm
Feeds reliably from unmodified AICS mags
No AI's, I loathe fireforming......just me but I don't want to do it
Brass that is easily obtained or formed from an easily attainable parent case.
I realize that 24" MAX length on the barrel is shorter than a lot of guys run, but I'm not into the longer barrels. Nothing against those that are, just a personal preference here. I'm no HSLD OAF match shooter, but I'm not a slouch behind the trigger either. I can handle an extra bit of a wind hold from running a shorter barrel and giving up a bit of MV in exchange.
I'm leaning toward either 6 or 6.5 Creedmoor, maybe even a straight 243, but looking for input from the knowledge base here to make sure I'm not missing out on another round that would fill the bill. I'll have plenty of time to build up a stock of components between now and then, but I have loads of R17 on hand from the 260 so it'd be a major plus for something that will work with that powder as well.
While I haven't had the barrel borescoped, it is approaching 3K rounds so I figure it's on it's last leg. For a prefit AAC barrel it has worked out very well, but I guess it's time to screw on a better one and have the action trued up while I'm at it. I'm going to miss out on the matches at Woody's this summer, and probably fall as well, so I may as well make it worth it. I can't just whip out $600-$700 for a new barrel and 'smithing, so it'll likely be next year before this even happens.
I you were building within the following parameters, what would you build? Keep in mind the gun will be used mainly for tactical matches and range use that will push the round count up to around 1K-1200 rounds a year. I'd really like to get 2 seasons out of the barrel, 3 would be even better.
R700 short action (.473 bolt face)
22"-24" barrel (not including brake)
6, 6.5, or 7mm
Feeds reliably from unmodified AICS mags
No AI's, I loathe fireforming......just me but I don't want to do it
Brass that is easily obtained or formed from an easily attainable parent case.
I realize that 24" MAX length on the barrel is shorter than a lot of guys run, but I'm not into the longer barrels. Nothing against those that are, just a personal preference here. I'm no HSLD OAF match shooter, but I'm not a slouch behind the trigger either. I can handle an extra bit of a wind hold from running a shorter barrel and giving up a bit of MV in exchange.
I'm leaning toward either 6 or 6.5 Creedmoor, maybe even a straight 243, but looking for input from the knowledge base here to make sure I'm not missing out on another round that would fill the bill. I'll have plenty of time to build up a stock of components between now and then, but I have loads of R17 on hand from the 260 so it'd be a major plus for something that will work with that powder as well.
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