I live in CA so only 10 round mags for me, anyway I want to buy a diff cal bbl other than the 5.56. I cannot decide which of the 3 is most accurate and affordable down the line. I do reload but not for any of the 3 as I do not own other rifles in the 6.5, 6.8, or 7.62. What do you guys prefer and why. I would probably hunt mule deer at less than 150 yards, I only have access to a 100yd range locally (free for me LE although I am not an LEO, I am an ACO)
Want to buy a new bbl for xcrL help me decide which caliber
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7.62x39 can be interesting. You need to make sure the barrel bore and bullet diameter match for good accuracy. Also surplus of Wolf isn't the most consistent.
7.62x39 actually uses a 0.311 bullet not a .308. Some ammo uses a .308 bullet and some bores are .308 and not .311 so you need to spec it right to get good accuracy.
6.8 is nice, good knockdown and retained energy out to about 300 yards. I know a few guys who hunt with it and all speak highly of it at intermediate ranges.
6.5 is the bees knees with respect o accuracy and carries a fairly weighty bullet so it can deliver punch. You really need to reload this though to keep costs down.
For accuracy I suspect you are looking at 6.5, 6.8 and 5.56 being close and 7.62x39 being the least accurate, though I have not shot 7.62x39 in an XCR. 6.5 excels at long range, but agian no experience of this in an XCR.
Gunner can definitely provide more insight to these.
7.62x39 actually uses a 0.311 bullet not a .308. Some ammo uses a .308 bullet and some bores are .308 and not .311 so you need to spec it right to get good accuracy.
6.8 is nice, good knockdown and retained energy out to about 300 yards. I know a few guys who hunt with it and all speak highly of it at intermediate ranges.
6.5 is the bees knees with respect o accuracy and carries a fairly weighty bullet so it can deliver punch. You really need to reload this though to keep costs down.
For accuracy I suspect you are looking at 6.5, 6.8 and 5.56 being close and 7.62x39 being the least accurate, though I have not shot 7.62x39 in an XCR. 6.5 excels at long range, but agian no experience of this in an XCR.
Gunner can definitely provide more insight to these.
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6.5 because I said so. 
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SBR 7.62x39
Thanks for all the info very helpful, I have been reading all of the caliber forums. I live in southern CA. Maybe I should just wait and get a .308 XCRM. I love reloading .308 for my old Savage Scout. I wonder if their new metal bedded stock will be available for it.
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