load data ?????

[XWrench3]

ok, i have been loading for a while now, but this is the first time i have run across this. i am loading light boolits :castmine: in a 38 special, no big deal, except there is not anything that is spot on for load data. i used a heavier bullet data to be safe, which worked for the one powder i had, but i want to try bullseye today, and there is no data (that i have, or that the alliant website offers) for a 102 grain cast boolit. :Fire:they list a 110g jacketed bullet, but i know there is a LOT more drag for j bullets, which i think would raise the pressure. i was wondering if that data would be ok to use in my application? any ideas? by the way, their load is 4.6g of bullseye for a 110g jacketed bullet. i know it is safe to use a heavier bullet load in the same bullet type (jacketed vs cast) but i have never had to try crossing between the two. thanx.:drinks:

[GabbyM]

Lyman 49th gives load data for their 9mm bullets atop 38 Special. 4.6 grains is the top load for the 120 grain with 4.9gr Bullseye as +P with a 90 grain #356242 they start at 3.3 gr top at 5.3gr with +P at 5.6gr of Bullseye. The 4.6 gr under120gr bullet is listed as their accuracy load at 1001 fps and 16,400 C.U.P. 4" barrel.

That gets inside the ball park. Variables in revolvers can be large so it's kind of moot trying to glean a perfect load from a book. If you're looking for accuracy I'd start with 3 1/2 grains then work up in .2 grain increments. If you're shooting a little J frame I'd keep them light. From looking at this data I'd ponder anything over 5 grains as getting into +P territory with a 100 grain cast bullet.

CastLoads list a 112gr bullet with 3.8gr BE at 954 fps from unknown barrel length.

[acl864]

I piddled with some 38 special loads with a 100 gr DEWC a while back.

Primer/Powder/Grains/Bullet/OAL/Avg FPS
CCI500 Bullseye 3.5 100 Gr. DEWC 1.222" 779
CCI500 Bullseye 3.7 100 Gr. DEWC 1.222" 809
CCI500 Bullseye 3.9 100 Gr. DEWC 1.222" 821
CCI500 Bullseye 4.1 100 Gr. DEWC 1.222" 895

Loads were chrono's out of a S&W M19 w/ 2 1/2" barrel. I'm not sure where the original data came from- probably an old Lyman book and I just used the cast bullet data for whatever weight bullet was the closest. As always start low and work up- be safe.

[fredj338]

YOu can always use heavy bullet data for lighter bullets. You can also use jacketed data, back it off 5%.

[Bass Ackward]

but i want to try bullseye today, and there is no data (that i have, or that the alliant website offers) for a 102 grain cast boolit.

Lyman lists a start of 2 gr BE and 3 max with a 75 grain cast. (358101) Accuracy load 2 gr.

Lyman lists a start of 2 gr BE and 3.8 as max with a 112 gr cast. (358425) Accuracy load is 3.8 gr.

You can interpolate from that. My guess is around 2.8 to 3.4 grains for an accuracy load understanding #2 was their mix.

[XWrench3]

thanx guys, i loaded up a half dozen of each @ 2.5, 2.7, and 3.0grains today. hopefully i can get out tomorrow or wednesday to try them out.