Posted this over on another forum....
RJM
Got to finally do some chronographing the other day:
Freedom Arms .41 Magnum 6" barrel that is Mag-Na-Ported
220 Speer JSWCSP/23.0 H110/1545 fps
220 Speer JSWCSP/13.0 Blue Dot/1240 fps
255 CPBC WFNGC/22.0 H110/1360 fps
300 Specialty Pisol Gear/19.0 H110/1260 fps
Same loads from a Gary Reeder Custom 5.5" Ultimate .41 Hunter
220 Speer/1450 fps
220 Speer/1200 fps
255 CPBC/1325 fps
300 Specialty/1241 fps
Competition Electronics chronograph at 6' from the muzzle. Three shot average. The extreme spred on any of the loads from the FAs gun was 30 fps. From the Reeder gun 55 fps.
No clue why the FA gun liked the 220 Speer/H110 load so well and the Reeder gun didn't. Velocity was 1546,1540,1549 for the FA and 1459,1475,1417 for the GR. The other three loads are what I would have expected the difference in guns to be because of the FAs tighter chambers, flashgap and 1/2" longer barrel even with the Mag-Na-Port slots.
Bob
..and this poster has some real good loads for FAs .41s...
Bullet Weight Powder Charge Velocit Barrel Notes
WFNGC 250 H110 20 1365 4 5/8
WFNGC 250 H110 21 1492 6.5
LTC 215 231 5 744 4 5/8
JHP 170 Corbon Factory 1286 6.5
LTC 215 231 6 828 4 5/8
XTP 210 H110 20 1313 5.5
XTP 210 H110 21 1325 5.5
Lhead 270 IMR4227 16 1230 6.5
Lhead 270 IMR4227 18.5 1169 6.5
Lhead 270 IMR4227 16 1263 5.5 Redhawk
Lhead 270 IMR4227 16 1267 7.5 Redhawk
Lhead 270 H110 21 1328 6 Freedom Arms
Lhead 270 H110 22 1465 6 Freedom Arms
Keith 230 H110 22 1475 6 Freedom Arms
Hornady 300 H110 16 1086 6 F-Arms, 41 Spl case
Hornady 300 H110 17 1116 6 F-Arms, 41 Spl case
Nosler 210 H110 20 1278 5.5
Sierra 170 H110 25 1582 6 Freedom Arms
Sierra 170 H110 25 1727 10 Freedom Arms
Sierra 170 H110 25 1639 7.5
Sierra 170 H110 25 2030 20 Marlin
WLNGC 265 H110 23 1495 6 Freedom Arms
WLNGC 265 H110 23 1594 10 Freedom Arms
Cast 265 Corbon Factory 1453 6 Freedom Arms
Cast 250 Corbon Factory 1510 6 Freedom Arms
Sierra 170 VitN110 18.6 1416 7.5
Sierra 170 H110 26 1651 6 Freedom Arms
Sierra 170 H110 27 1715 6 Freedom Arms
Sierra 170 H110 28 1764 6 Freedom Arms
Sierra 170 B Dot 16 1632 6 Freedom Arms
Sierra 170 B Dot 17 1631 6 Freedom Arms
Sierra 170 B Dot 18 1649 6 Freedom Arms
Keith 230 B Dot 10 1061 7.5
Keith 230 B Dot 10.5 1128 7.5
Keith 230 B Dot 11 1186 7.5
Keith 230 B Dot 11.5 1228 7.5
Keith 230 B Dot 12 1292 7.5
LFNGC 265 H110 24 1585 6 Freedom Arms
WFNGC 255 H110 24 1576 6 Freedom Arms
WFNGC 255 H110 24.5 1602 6 Freedom Arms
Rem 200 H110 21 1270 2.5
Rem 200 H110 21 1418 6 Freedom Arms
Rem 200 H110 21 1445 7.5
Rem 200 H110 21 1648 10 TC
Rem 200 H110 21 1696 14 TC
Rem 200 H110 21 1931 20 Marlin