loading data for miroku .45 kentucky

[gun killer]

I'LL BE RECEVING A USED MIROKU IN .45 AND NEED LOADING DATA. I'm new to this game so would app. some help

 

[Zonie]

I recommend using a patched roundball for your shooting. Black powder of course is prefered but if your gun is a cap lock the synthetic black powders like Pyrodex, 777 etc will work.
In a .45 try to use 3Fg black powder or Pyrodex P. It will produce less fouling than the courser 2Fg or Pyrodex RS.

The general rule of thumb for a starting powder load is the powder charge should be 100 times the bore diameter. In your case that would be 100 X .45 =45 grains.
Note: Any of the powder charges recommended are measured by volume only. Black powder will weigh the same as the volume measurement on a scale but the synthetic powders actually weigh less per cubic inch than black powder so don't do that. The synthetic powders energy level per cubic inch is the same as black powder so use the volume measure for all of them.

A .45 caliber rifle will use a .440 diameter ball patched with a patch that may be from .010 to .020 thick. Most people find that a .015-=.018 patch works best.
The patch must also be made of pure cotton. Any man made fibers will not work at all.

Happy shooting
zonie

 

[LFC]

I've read of Miroku ".45" guns actually taking a slightly smaller ball than the usual .440 . You may have to experiment a bit--or even measure the bore and order a custom mold--if it turns out too small for the usual ball size for a .45.

 

[walruskid1]

if a .440 turns out to be too tight, try a .433 ball. hornady makes 'em, among others.

 

[arcticap]

Your going to want to use a .433 ball and a .010 patch.
Someone on another sight posted this:

I thought I had the only one in existence! I've always wondered about it, but no one around here knew anything about it, even though this is buckskinner country. Mine is a caplock that I picked up used 15 years ago or so for $40. Although they say .45 cal, my thinking is, it is closer to .44. The reason is, I can barely get a .440 ball down the barrel with a .010 patch, but a .433 pistol ball and the same patch work great. I have killed several mulies and a few rabbits with mine. They are nice and light to carry in the woods compared to my long barreled .54 rifles. The accuracy is reasonable for hunting and informal target shooting.

rocklock

Steamboat Springs, CO

If you can find a .007 patch or thinner (like .005), you might be able to use a .440 ball.
The bore of that rifle is 2 or 3 thousandths smaller than .45. Plus the rifling lands are wide and the grooves narrow.
It may be helpful for a tight load to be started with a mallet.

Pedersoli may offer .007 paches through their distributor, but you'll need to check:
[url] http://www.flintlocksetc.com/[/url]

You might also want to try using some extra powder with the 1 in 66" slow twist barrel.

Lube the patches adequately due to the longer barrel.

 

[gun killer]

thanks for the info. receved the rifle today in good shape I'll be shooting it Sunday.

 

[gun killer]

thanks for the info.

 

[laffingman67]

This may sound a little silly, but I use a .440 with a .22cal cleaning patch from Oxyoke (I think, have to check on the brand) with 50g 3f goex. My gun shoots pretty consistant with this load. Your results may vary... :hmm: