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Old April 10, 2000, 01:43 PM   #1
CleanCut
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I'm loading Hornady 68 Grn HPBT's. Hornady manual indicates COL OF 2.250". Looks pretty tight in a Mini-14 magazine. How far can I go in reducing cartidge length without exceeding pressures with this combo?
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Old April 10, 2000, 05:55 PM   #2
Bill Hebert
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Cleancut, the Lee reloading manual lists minimum OAL for each bullet/power load. It also lists the maximum OAL (which does not vary by powder/bullet.) When I reload, I try to adjust to midpoint, but I check every round with my caliper. Many would say this is crazy, but hey, it works for me.
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Old April 11, 2000, 09:44 AM   #3
CleanCut
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Sounds good, Bill. I know a guy who has most of the manuals. I'll check it out.
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Old April 13, 2000, 10:50 PM   #4
dundee
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The seating depth of the bullet often has a direct impact on the accrucy of the load. As long as the round feeds ok from the magazine the way to find the best seating depth of the bullet is 1) find how far the bullet us from the rifling. 2) adjust the bullet seating for .1" bullet jump and fire some groups. Adjust the bullet seating depth .05" in and out while shooting several groups at each seating depth. Often a rifle will 'like' one seating best.
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Old April 15, 2000, 09:12 PM   #5
dgang
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CleanCut, I agree with you. An oal of 2.250" is a bit much for the Mini's mag. A length of .240"-2.245" is about max, especially for the sharp spire-like tips on the 68 -69 gr. hpbt. on the Horn. and Sierra bullets. You didn't say what kind of powder you were using but if you using a relatively slow burner ie. Varget, I don't think .005-,010" would put you in the danger zone. Just my 2 cents. dgang
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Old April 16, 2000, 12:01 AM   #6
WalterGAII
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Just in case you ever graduate to AR's, I'm having no trouble getting 2.260" in my AR mags. Never have any feeding problems and accuracy is terrific.
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Old April 17, 2000, 01:21 PM   #7
CleanCut
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dgang:
Using H335. I'll test it out with a 40 rounder. Will shorten as needed.
Thx
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Old April 17, 2000, 01:43 PM   #8
CleanCut
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Walter:
You mean AR-10 in .308, right? Accuracy wise, I would just use a bolt gun. Heavy barrel Savage, .308, .5" groups $480, w/ scope add a couple hundred.
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