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Old February 25, 2005, 03:21 PM   #14
1SHOT1KILL
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Join Date: February 15, 2005
Posts: 15
AI user,
I would be very surprised, if T7 would get a 250gr XTP up to 2,200FPS, with the Savage recommended 120gr charge. I think you could get close to 2,100, say around 2,075 maybe a tad more, but like I said, I would be surprised if it broke 2,200. I do think that about 2,100 FPS is realistic with 120gr of T7. Keep in mind that we are talking about the Savage 10ML-II here. In no way should anyone shoot loads over 100gr in CVA's, Traditions, Winchesters, etc, muzzleloaders with T7. Hodgdon, I believe only recommends 100gr as max loads for T7. Savage recommended loads list 120gr T7 as max for the 10ML-II.

A 120gr charge of T7 and a 250gr bullet, the pressure is probably around 30,000 PSI, maybe more. That is way too much pressure for the CVA's, Traditions, Winchesters, etc, muzzleloaders to with stand. Lyman Ballistic Laboratories has published three Pyrodex pellet-powered saboted bullet loads that develop 27,000 PSI out of a 22" test barrel. of course the heavier the bullet, the more pressure, with the same charge. But this is still a very safe pressure level for the Savage 10ML-II. With smokeless powders, the Savage recommened loads generate pressures in the 36,000-40,000 PSI range. Western Powders, is currently doing pressure testing on several 10ML-II's that were sent to them a couple months ago. They are conducting data test on many different smokeless powders, as well as, BP, Pyrodex, and T7. They may have the loads and pressures data out later this summer or early fall. So will have to wait a while for exact pressure data.

There have been alot of horror stories about stuck breech plugs, when shooting T7, in many makes of muzzleloaders. One helpful tip when shooting T7 in the Savage, is that after the 3rd shot, break the breech plug loose, 1/2 turn then tight it back up. This will break the crud ring that sticks the breech plug and it will not reform to stick the breech plug. Also make sure that you swab or spit patch the bore bewteen shots, to ensure accuracy.


First Freedom, I believe the great state of OK changed their regs to allow smokeless back in 2002, maybe 2003. Hopefully they will not go back to the ways of old.
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