Originally Posted By: skeettx
OK
1 1/8 1,145 Cheddite Green Dot RXP 12 20.5 7,100
1 1/8 1,200 Cheddite Green Dot RXP 12 22 7,800

So if you go up another .3 grains, it will go up X

Is X linear or parabolic?

Call Alliant and see what they say, they are real nice
1-800-276-9337

Are you working to a specific pressure limit?

You are doing great in your endeavor to load a cartridge smile

MEC bushing #37 shows 23.3 grains, but my bet to you
is that it throws lighter than that. Please assertain using a
proper scale. Next is to use fingernail polish to fine adjust the
bushing to the perfect load. I use RED smile



Hi Mike and thanks for the kind words. As you jolly well know, I'm very green when it comes to reloading and I'm trying to learn as much as I can and do things right the first time.

Thanks for the tip on calling Alliant, so simple, it's what I should have done in the first place!

With my MEC 600 and using bushing #36, I get 22.3 (weighed on a powder scale BTW) just a hair off the published 22.4 for that bushing. That kind of surprised me, most of the bushings do throw light that I have weighed for other recipes.

The pressure and MV is about what I was looking for in a general hunting load. So I wanted to get it as close as possible.

I like the nail polish idea...I'll give that a try.

Again, thanks for all the help here and on the other forum also.

Stay Well!

Greg

Gregory J. Westberg
MSG, USA
Ret