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Joined: Jul 2004
Posts: 347
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OP
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John when testing loads for a particular cartridge in multiple rifles (as you did for 243 in Gun Gack) how do you decide on OAL for a particular bullet?
thanx
vires,fortitudo,vigilantia
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Joined: Jan 2010
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Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2010
Posts: 13,109 |
Not MD, but here’s an interesting lesson: I was working up a load for a .30-06 using 185 VLD and Hunter powder. I determined the OAL that just barely kissed the lands and used that as my max. I loaded 6 at that length, then loaded 6 each at a decreasing OAL of .040” in 3 iterations. So 6 each, 4 different OAL. I shot the shortest cartridges first. Here’s my results: Shortest Slightly longer Longer yet I didn’t shoot the longest cartridges, this is good enough for me, and the recoil woke me right up. This is how I do it. Swiped it from the Berger folks. P
Obey lawful commands. Video interactions. Hold bad cops accountable. Problem solved.
~Molɔ̀ːn Labé Skýla~
Member #547 Join date 3/09/2001
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thank you i appreciate the information. i'm wondering what MD does when shooting the same cartridge in different rifles. is OAL optimized, as you did, for each ?
vires,fortitudo,vigilantia
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Joined: Jan 2010
Posts: 13,109
Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2010
Posts: 13,109 |
I work up loads on a rifle by rifle basis. Sometimes the same load shoots best in more than one rifle, but OAL frequently changes. My brother’s 7mm-08 OAL is 2.156” Mine is 2.183” P
Obey lawful commands. Video interactions. Hold bad cops accountable. Problem solved.
~Molɔ̀ːn Labé Skýla~
Member #547 Join date 3/09/2001
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Joined: Apr 2011
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Campfire Savant
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Campfire Savant
Joined: Apr 2011
Posts: 150,929 |
I load mine to factory length, if I’m getting sub inch groups, I’m happy. I have four 7 mags, they are all sub inch with factory length. It’s the same with the three 264’s and three 6.5 Creedmoor’s. I would have a hard time keeping the ammo separate for each rifle. At one time I experimented with length, but for the hunting I do sub inch is way good.
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Joined: Jul 2001
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Campfire Kahuna
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Campfire Kahuna
Joined: Jul 2001
Posts: 60,049 |
metricman,
I depends on the bullet and rifle. With lead-cored bullets I started with them seated just shy of the lands, around .02 to .03 inch. If that's too long to fit in the magazine (if the rifle has a magazine) I seat them so they'll feed reliably. If the loads don't shoot well, I try seating them a little deeper, but they usually shoot well with some powder/charge if seated straight.
With monolithic bullets I start with the bullets seated farther from the lands, a minimum of .05 inch but often even more. Same deal: If they don't shoot well, then I seat 'em a little deeper and see what happens.
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.” John Steinbeck
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Joined: Jul 2004
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Campfire Member
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thank you must be tedious when testing the same load in different rifles
vires,fortitudo,vigilantia
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Joined: Jul 2001
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Campfire Kahuna
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Campfire Kahuna
Joined: Jul 2001
Posts: 60,049 |
Hey, I get paid to test stuff!
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.” John Steinbeck
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Joined: Jul 2004
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as you should!!
i was just curious about adjusting OAL for each rifle in which you shoot the same load
cheers!
vires,fortitudo,vigilantia
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