Use of Different Wads and Smokeless Powders

[ENCORE50A]

So when using this method of fps/node, how much of an es is ok.?

Myself, I don't look for an ES per se. I'm not shooting 2 identical charges. I'm looking for 2 or 3 different charges where there is very little velocity change.

 

[Shorty]

I can see the 2 here. Where can i find a good explanation of the satterlee ladder test.

 

[Shorty]

Ty

 

[ENCORE50A]

I can see the 2 here. Where can i find a good explanation of the satterlee ladder test.

https://www.snipershide.com/shootin...s-satterlee-method-an-objective-look.6929293/
https://www.thereloadersnetwork.com/2018/05/12/satterlee-load-development-and-testing/

 

[frankmillie]

Shorty,
Did you fix your problem with leaking primers?
I made mine tight with Fed 209A primers with no leakage.
F

 

[Shorty]

No i did not. The remington and winchester both leak. I have some cci next to try. I also found a couple packages of cci mag., might try these also. I really like the adjustable breechplug, its easy to adjust the head space for primer crush. Maybe the smokeless powder puts out to much pressure for the 209 primers though? What are you shooting for powder? And primers? Thanks Frank....

 

[ronlaughlin]

Guessing the flash hole in the bushing is 0.035", perhaps the issue can be fixed by using a bushing with 0.30" flash hole?

 

[Shorty]

Yes it is 0.35". Thats a great idea. I have a 0.40" bushing but not a 0.30". I will give Mark a call and see if he concurs. Thank you Ron...

 

[mwwoodman]

Shorty - That is phenomenal shooting!! I also have Reloader7 and 250gr Fury Black tip so I’ll definitely try it when I get time.
But I think you will need to adjust your high pressure breech plug to stop your leakage. From what I understand from Mark’s instructions it needs to be adjusted so it barely won’t close slowly with 209 primer - it needs to be slam closed to get good seal

You definitely do NOT want to slam it shut. It will not seal good. Shut it gently, then push the break trigger forward to pinch the primer on a properly adjusted plug (per the instructions).

 

[mwwoodman]

60gr of 4198 and up to a sabotless 275gr should be well under 45kspi. N120 you would want to stay at around 55gr. It peaks higher and faster but its also more efficient at higher peak so you dont really want to use it with say a 225gr sabotless or even a 250gr unless you go up a few grains.

some data I collected this spring from my ported test barrel... 20 deg F, 28" Brux barrel.
60 gr 4198, 275 Fury, no wad - 40,400 psi
60 gr 4198, 275 Fury with wad - 45,859 psi

60 gr 4198, 300 Parker BE, no wad - 48556 psi, velocity 2539 fps
65 gr 4198, 275 Parker BE, no wad - 45,319 psi, velocity 2685 fps
65 gr 4198, 275 Parker BE, with wad - 48,050 psi, velocity 2700 fps

 

[GM54-120]

Here are a few traces using a Pacnor 45 1-22 MLII barrel and OEM plug with Fed209A primers.

Notice how dropping down to the 200gr FTX its pretty much pressure starved. You can actually get it moving this fast with nearly half as much N110. IIRC about 35 of N110 will match this and still be under 45kpsi.

 

[JeffB1961]

some data I collected this spring from my ported test barrel... 20 deg F, 28" Brux barrel.
60 gr 4198, 275 Fury, no wad - 40,400 psi
60 gr 4198, 275 Fury with wad - 45,859 psi

60 gr 4198, 300 Parker BE, no wad - 48556 psi, velocity 2539 fps
65 gr 4198, 275 Parker BE, no wad - 45,319 psi, velocity 2685 fps
65 gr 4198, 275 Parker BE, with wad - 48,050 psi, velocity 2700 fps

would these numbers also apply to the 26 inch non ported brux 1:20 twist barrel minus a few FPS for the 2 inch shorter barrel ? (sticking with a 275 grain bullet or less) .
would these numbers vary between imr4198 vs h4198 ? or reloader7 ?
and i'm guessing these numbers are with your adjustable BP ..... will your standard BP stand up to those pressures or should a few to several grains of powder be shaved of ?
between the two 4198s and reloader7 do you have preference or are either fine as long as they're kept at safe loads ?

 

[LBAhunter]

Here are a few traces using a Pacnor 45 1-22 MLII barrel and OEM plug with Fed209A primers.

Notice how dropping down to the 200gr FTX its pretty much pressure starved. You can actually get it moving this fast with nearly half as much N110. IIRC about 35 of N110 will match this and still be under 45kpsi.

https://m.box.com/shared_item/https://app.box.com/s/7u86evwrvgn3wmxpdzndtnzjcr04dfv2Trace 53b
42gr of N110, 225FTX under 45k
Trace 50b
35gr of N110, 200XTP
Around 35k