10mm 155gr Loads?

[RN]

Ok guys..

I need some advice with loading my 10mm with 155gr Plated RNFP using blue dot..Anyone have any start Data for me?I have done some looking and again am left without a match so again, I turn to you guys for input before guessing..(educated of course but still guessing) I also have on hand, AA 5, AA 7, PB, CSB-1(really like to try that), and some VV340...

 

[jeepmor]

I plot higher and lower bullet weights range of velocities on a scaled chart then extrapolate the unknown bullet weight. Checked my data, no 155s to comment on. Should be plenty fast though.

Have fun, be safe.

 

[steve4102]

Here ya go. Don't forget to read the warning page first.

http://www.alliantpowder.com/default.aspx

Then follow your bullet manufacture's recommendations for jacketed/lead data.

 

[RN]

Their data has loads using BE-86 but not really for blue dot..The have some loads using Blue Dot but not for 155gr RNFP or Plain 155gr FMJ..Its a pain..

 

[41 Mag]

You might find #5 works well with those. Just don't get carried away with pushing them too hard.

 

[bangswitch]

I've loaded 10mm 155 Rainier plated with 12 grains Blue Dot. That's 0.9 grain down from Hornady's recommended max for 155 XTP JHP's, which I also shoot. I've had no issues with the plated bullets and that powder weight in my G20.

 

[RN]

Let me ask you this:

Accurate Data says the following for 10mm using AA#7...
155 HDY XTP 11.4 1,214 12.7 1,379 37,500 1.250

I do not have 1000 155gr XTP's but I do have 1000 RNFP Plated so what would my fellow re-loaders do with this info in the same situation? Lets say that you only had AA#7...(AA#5 has data for 155gr RNFP)

How do you guys adjust for different bullets..We know its the same weight, somewhat the same shape, so whats the big deal? Just that its a HP? This drives me crazy.. I know its done but I am at a loss...

 

[Robert101]

RN, I follow a few simple guidelines in interpolating pistol data:
1. I don't push plated bullets over 1,100 fps. Sure you can push them faster but basically treat them as soft lead and keep velocities low. If you want to push them faster keep an eye on the jackets coming off or fragmenting.
2. You can safely use loading data of a heavier bullet weight for a lighter bullet you may have.
3. Load moderately at best and work up in powder charge. Start no more than say 15% below maximum, taking into account items #1 and 2 above also.
4. Use published data from reliable powder manufacturers and bullet companies. Compare and cross reference data to arrive at a moderate and safe conclusion.

These are my suggestions for a comparative start line. For high power rifle data I'm a little more cautions in finding direct load data for a specific bullet.

 

[steve4102]

Their data has loads using BE-86 but not really for blue dot..The have some loads using Blue Dot but not for 155gr RNFP or Plain 155gr FMJ..Its a pain..

You will never find an exact match for Primer, case, bullet, powder, lot numbers, firearm etc.

If you want data for a specific bullet, then you are going to have to purchase bullets from manufactures that also provide tested load data. Otherwise you will have to do what the rest of us do and gather as much data as you can, use safe loading practices and start low and work up. It really is the Only way even with "exact" component data.

It is Key to understand that Published Load data is NOT a recipe, it is merely a guideline with variables, minimums and maximums.

 

[RN]

Ok..I get what your saying and by that theory I should be able to use Blue -Dots own data for the 10mm load below safely..Its a different bullet slightly but heaver than my 155gr RNFP..To be even more on the safe side reduce it even further by let's say 15% and work up..Correct?

10mm Auto 165 gr Speer GDHP Hornady 1.255 CCI 300 Blue Dot 11.5 1,273

 

[rfwobbly]

Their data has loads using BE-86 but not really for blue dot...

Excuse me, but they do indeed. The data you seek is under "155 gr Speer GDHP". The Gold Dot is a thick plated bullet that loads just like a jacketed bullet. The data is applicable if you begin at "starting load" and work up. Max load is 12.0gr (1291 fps), therefore starting load is ~10.8gr.

Hope this helps.

 

[Robert101]

For that 155 grain plated bullet I would start at 10.2 of Blue Dot @ 1,150 fps. My Hornady 7th Edition indicates for this grain bullet & Blue Dot to use b/n 10.2 and 12.9 MAX. COL. length is 1.260. If you gun functions fine with this load use it as it should be completely safe. I have used this same load in my Dan Wesson PM7 many times.