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I have some 270 loads w/ 140-gr BT ahead of RL-19 for a 22-inch Ruger M77R. They were worked up to first signs of pressure - stiffish bolt lift and slight extractor mark. I will try to clock this load this weekend and report back w/ powder charge details.

Then the usable capacity used in the QuickLoad could be a bit short. DrMike chose the max meniscus value when he ran my data. Not a huge difference, but there it is.

I agree with the Ackleys being tolerant. I would pay attention to primer pockets loosening up, and sticky bolt on extraction. ScreaminEagle, when you measured H20, how bulging was the meniscus? For comparison, when I measured my 250 AI 40-deg., the meniscus at max bulge (just before letting...

I don't see the H20 measurement you provided, or is that what's in the QuickLoad header DrMike posted as "Usable" capacity?

So, referencing against the data DrMike provided, should one conclude from your figures that QuickLoad is either A) absurdly cautious, or B) greatly overestimates pressures?

I am interested in using CFE 223 in 250 Ackley (250 Savage AI 40-degree) behind 75-gr and 85/87-gr bullets. (25-inch barrel.) Any guidance would be appreciated! Brian

FYI For 100-grain bullet and IMR 4350: The current Sierra book lists max 48.0 gr @3200 fps (26-inch barrel.) A really old Hornady book: 50.0 gr @3100 fps (24-in barrel.) Brian

DrMike, didn't you mean "convex" meniscus? Brian

I only fired 5 of the first 10 (the most aggressive) bullets, just to see if the gun blew up :shock: , and to clock them, so I could adjust the charge for the other loads if required. Since it's CFE 223 powder, I was curious if I would get any copper fouling, knowing how badly it fouled before...

Lever guns don't need to be cleaned. Shoot them until the bullets don't come out any more, and buy a new one. Brian

A little late to this campfire. I use their "Patch Out", the same stuff, yes? I love it, and regularly leave it in the bore for 8 or more hours. Since it is syrupy I don't consider it likely it will pool much in the bottom of the bore. My preferred method for application is to use a...

Update: I settled on 34 grains CFE 223 and fired 5 of the Tubb F.F. bullets. Of these I chronographed the last 4 shots. The average was 2606 fps, but erratic - they varied between 2517 and 2710 fps. I assume anything > 2500 fps will adequately obdurate the bullet, specifically mentioned in the...

RJ, You asked the wrong chap, Scott has the 243 Win. I will have to reply later as I don't have my load data at the office. If I don't update here in a day or so, post here again to remind me (I have notification "on".) However, I'm pretty sure I went a bit beyond the 54.0 grains Hodgdon...

I only just got started trying it in 6mm Rem behind 70-gr TNT. I worked up to over 3850 fps (24-in barrel) but that was too hot, got a sticky bolt. Accuracy with no tuning was ~3/4 MOA, so very encouraging. (Primer: WLR, brass: Rem)

How did you determine you weren't getting good ignition?

What, no antelope?

For one thing, CFE is a ball powder, and those tend to be more erratic than stick powders, and more often produce a low load density. Speer, for example, often recommends magnum primers for ball powders like H380 even in small cartridges. I think I'll try 33 grains of CFE 223. Brian

I will be using a chronograph, hoping for ~2600 fps (bullet needs to obdurate properly.) How does the powder burn rate get entered into the formula? I presume there is a lookup table with a value for "CFE 223", but an actual value not something the layman is ever privy to - we're only given a...

I should expand on my goal here: I am preparing to use the Tubb "Final Finish" fire lap kit on an old (1970s) Rem 700 Varmint in 6mm Rem. The bullets are 107-gr Sierra HPBT. I have a couple pounds of CFE 223, and since rapid copper fouling is the reason I intend to run the lapping bullets...

DrMike, Wow, thanks, I didn't expect anything like reams of data. Interestingly, I have been poring over 243 Win and 243 WSSM data (both CFE 223 and powders close to CFE in the burn rate charts like Varget and H380) and had extrapolated a 33-grain starting charge behind a 107-grain bullet...