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Old 02-21-2011, 10:10 AM
zeke zeke is offline
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Magnus 255 lrnfp, 1.171 col, Fed 150 primer, 4.7 grains unique, about 770 fps from 5 in and extremely accurate.

If the barrel has a long enough leade, 1.247 col and 5.0 grains unique

The col and charge that work best may be individual to the leade in your barrel, and the diam of the bullet being used, especially the dia in front of the cannelure. The various 255 lrfp's tried were based on the standard mold, and sized to a greater dia than the 200 lrnfp's tried and had a full diameter in front of the cannelure.

The best bullet tried came from a Lee 255 lrnfp mold and had a larger meplat and lesser diam ahed of the cannelure (if memory holds).

Forgot to mention the 45 acp semi used has a slightly stronger recoil spring in it.

Last edited by zeke; 02-21-2011 at 10:11 AM. Reason: recoil spring mention
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