What freebore are yall using in your trainer rifles. I plan to shoot the Nosler RDF or 75 Hormady's and want to be short of mag length while touching the lands. I'm thinking .070 freebore?
223 trainer freebore
- Thread starter jsthntn247
- Start date
I run a 223 wylde it should be about .0619 freebore. I can't remember exactly what my distance to the lands was, but with the 75 a max at 2.55 I am not in the lands.
I run a .100 and it fits an a accurate mag with the front notched. I run 80 vlds and amax with no problems either
I don't know why you think I can't. Or why I would want to be jammed. I also can't confirm my freebore, all I can do is assume its close to what a 223 wylde should be from its specs. It doesn't seem like .062 is very short.
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I have a 223 reamer with a .210 freebore for shooting 90 Bergers in F/tr so most freebores are short in my book. To me, having a custom chamber where you can't reach the lands and still mag feed for the life of the barrel is useless. I understand accuracy can be had jumping a mile but I can get a factory Remington barrel chambered with a pornstar throat for that. A correct throat for the intended purpose is the most critical piece of a custom rifle.
I don't have my notes with me, but I'm loading around 2.320" with a factory Rem SPS Tac, using Wyatt's DBM and the 70gr RDF. They shoot consistent 1/2 MOA with AR Comp right at 2850 fps. Verified out to 450 yards, that's with a 9 twist barrel, it's loaded 10 thou off the lands and I've always found the SPS to have a very short throat. Can measure exact distance when I get home.
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In my experience Remington 700 factory 223s don't have long throats. They have a much shorter throat than my 223 wylde remage barrel.
Got my gun back chambered with a reamer that was supposed to have .075 freebore and I'm .200 short of mag length when touching the lands with a RDF
Well then you have some room to chase the lands as the throat erodes. The problem with really long throats and boatail bullets would be as you load these bullets out further and further, eventually the case neck no longer supports them as the long boatail shortens the full diameter bearing surface. You have to have a substantial amount of bullet bearing serface in the case neck to tightly hold the bullet in line with the bore. My trainer has Wyatt BM and the magazines are way longer than I need with a .223/5.56 cartridge. My 80 gr. Sierra MKs Measure right at 2.467 COAL. I've used that combo out to 1000 yards when the wind is decent making my trainer fairly competitive, and that's with a 12 power scope.
Work up a good load with what you've got and go shooting.
Wayne
