Ammunition & Hand Loading > Cartridge and Shotshell reloading

Gun limiting OAL

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bk09:
I cross referenced the newest hornady manual at work today and it listed the OAL at 2.780, looks like hodgdon has a typo. And hornady starting weight was just over 3 grains less than hodgdon as usual. Looks like I will finally load some rounds this weekend, I need a good reloading session.

SemperFiGuy:

--- Quote ---I cross referenced the newest hornady manual at work today....
--- End quote ---

Usually a good idea to cross-reference manuals on a new or problematic load.  Often gives a guy some useful information and maybe some helpful insights.

sfg

noylj:
COL is entirely the reloaders responsibility.
You want to find the distance from the lede/lands/rifling that is most accurate.
The only max COL for a reloader is (1) whatever is needed to fit in the magazine (unless you are not using the magazine and (2) whatever fits YOUR chamber.
The other COL limit is not to go below the manual's COL without reducing the starting load.
For "most" rifles and most "bullets" in "most" chambers, pressure acts opposite to handguns: Bottleneck cases often drop pressure as the bullet is seated deeper (to some limit) and pressure goes up as the bullet approaches the lede/lands/rifling.

358156hp:
Guilding metal bullets usually have different recommended COL than standard cup & core bullets do. Oftentimes, it can be difficult to get acceptable accuracy from GMX & Barnes X bullets unless you follow the factorys recommended seating distance to the lands. Personally, I'd follow Hornadys data for that specific bullet.

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