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Reloading light rounds for the 303 with Trail Boss
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10-03-2011 11:28 AM
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Trail Boss says in all their documentation for lead bullets only. So far I have used it in my 1917, I have 3 #4's and a #5 and the #5 is a beast for kick, I may try working up a load with trail boss for it.
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let me know if you come up with an accurate TB load and i will do the same.
Lee
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Advisory Panel
Originally Posted by
Ben Cartwright
Trail Boss says in all their documentation for lead bullets only.
Horsefeathers! Here's the opening of IMR's document on the subject. See http://www.imrpowder.com/PDF/Trail-Boss-data.pdf for the full publication.
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The Following 4 Members Say Thank You to Parashooter For This Useful Post:
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Well, that's easy enough! Oddly, having printed out Trail Boss loading data two or three times previously, this is the first time I've seen that notice. Most useful info, Parashooter!
(DO refer to Parashooter's link above - that's where the tasty bits are hiding.)
Last edited by jmoore; 10-13-2011 at 11:08 AM.
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I stand corrected, I thought I had read lead only.
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I shot 13 grs of Trail Boss in a Westinghouse Mosin Nagant with a 200gr 314299 cast bullet with little over inch groups at 50 yrs. Haven't tried at 100 yet. Open sights and old eyes don't work too well together and I would venture the load shoots much better then me and my eyes do. I bet that same load would work good in 303 also. In fact I think I will try it in one of my Enfields. Ray
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Well tried 13grs Trail Boss in my Lee Enfield and it shot about the same 1-1/2" plus or minus groups at 50yrs as the 10 grs of unique and 13 grs of Red Dot. Trail Boss is a bit more expensive having a 9 ounce container with 255 grs as opposed to a 1lb container of Unique with 454 grs that costs only a few dollars more but TB does provide a safety area where you would know if you over filled the case by accident as can be done with Unique. Ray
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Well I tried 10 rds of 13 grs Trail Boss again. Used bullets from a 314299, 205gr mould that was beagled/opened to .315 X .305, in my 1918 LE Australian reissue that the bore mikes out to .314 X .304. Fair groups at 50 yrs which I'm sure would improve with younger eyes. Ray
Attachment 28023
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Looks like it´s an unqualified success. Will now try that myself.