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To get to 0.325 from 0.311, you'll need to add 0.013". Try a 2X20# paper wrap and you should get to 0.323", which should be close enough. Extend the patch all the way up the cylindrical nose, to...

Well, it is not all that I could have asked for, but the results are one heck of a lot better than I had feared, so I'll accept it as damn good news. Earlier (not surlier) in this thread, you saw the...

Yes. Packed like a "gas-checking rock," to be specific. It would have done the same with a powder charge behind it, but would have left no evidence, given that it would have been carried out the...

Well, that way-long-thaaang 160 grainer was fun, but here's another one that should be interesting.
http://i219.photobucket.com/albums/cc189/wosikae/PPCBoos/NEI_125_DDGC_SML.jpg
It is the NEI...

Well, I took those slightly softer long-ass 160gr PPCBoos to the range yesterday, and came up with some darn good news, and a real luck-out. The luck-out was that I changed two major factors at once,...

Yes. A related issue, according to Mic McPherson, is that the barrel heating that we see is primarily a result of that localized barrel expansion as the bullet moves down the length of the barrel,...

In order for any load to work, its Max PSI (after ~1" to 3" of PPBoo travel) must exceed that alloy yield strength. Otherwise, there is no obturation and sealing. There is quite a bit of expansion...

Sure thing, Barra:
Please work up to the following carefully, and ONLY after verifying from a published source that the numbers are "in the ball park." For a 150gr PPCBoo and a 2.6" LOA, with that...

First, please avoid the spray-on lubes . . . they will put on WAAAAY too much goopy. The scant trace of paste floor wax is all you need. Yes, I have tried no-lube-at-all PPCBoos, and have found that...

THAT is a BTDT for me and is deadly against accuracy. It happened to me in spite of my following the NRA's instructions to the letter. It caused me to drop PPCBoos as an option for nearly 20 years. I...

Dear Barra:
If I may assume that you are using a 150 grain CBoo core (this is only implied, above), and that you are talking about a 303 British load (not clear), then QuickLOAD tells me that you...

Well! I'll have you know that I HAVE been called worse than that! Mah!


There are other things that are valid variables, but the twist rate sits all by itself and helps make things simple. Here's...

That is not the meaning that I intended to convey. It is just that getting it to work becomes trickier the faster the bullet is turning. Your hotsy 30cal load is doing just over 200,000 rpm, which is...

My "plan" was going to be to do just as you suggest. This makes it a certainty. I noticed that the bran would not pour well from my flip-top mustard container (pour/squirt hole is ~0.2" in diameter),...

The revolutions per minute exhibited by a PPCBoo, as it exits the barrel, can have a direct effect upon how difficult it is to get it to shoot accurately, even if the twist rate matches the...

Today, I cast up some more of those waaaay-long NEI 160gr 6.5mm CBoos and sized them down to 0.259" in my Lee push-thru for the second phase of my 6.5 experiment (see below). I noticed that the...

In the 308 Copper Bullets in 318 Mauser thread, I ended up fiddling around with paper-patched JBoos and paper-patched Copper-Boos in my Model 1896 Swedish Mauser (6.5x55). I got them to work okay,...

Well, if a person needed armor-piercing Boos, for any reason, and had a lathe, files, a torch, and some 5/16" diameter W-1 or O-1 tool steel, it sure wouldn't take long to scratch that itch. The...

I have come to call it the "(truck) tire effect" because there really is waaaay too little time for the air that is trapped in the PPatch to escape during the couple of milliseconds the PPCBoo is...

Well, I got the darn Barnes 115 gr JBoos all patched up. Here's what is special about this batch:

:!: Unlike the soft-core JBoos from last week, I did not roll them between files prior to putting...

Greetings:
I have "discovered" a way of crinkling the fold-over-flat-to-the-CBoo-butt tail. It may be old hat to you but, if not, then I'll not have wasted your eyeball grease.

After completing...

Well, PDAWG_SHOOTER, did he get any accuracy with those hardened-steel-core PPToolBoo thangies? That completely non-yielding Boo-Core thangy really has me wondering! The Barnes' Brass-Boos arrived. I...

I corrected my formula-blab (above). After thinking about Barrabruce's comment, finally, the truth floated up to the surface. Thanks for the help, Barrabruce!
Zeek

Well, thanks, 303Guy. It could be useful only for a fellow in the shoot-no-lead hunting area with a PPatch-only rifle, or for somebody with JBoos he has sitting around in a...

Well, at least for soft-core JBoos, it looks like using undersized ones and patching them up to caliber-groove diameter works nicely. Using a ~50 Kpsi load of AA-4350, the Hornady 117 grain JBoo,...