Update on 200 SWC, 145 SWC and also H110 Powder (most accurate loads update included)

The 360-200-SWC boolit has now proven itself with the best groups of any boolit so far.  With the ability to shoot between .5 and .6 inches from 25 yards it's incredibly accurate over 3.4 grains of 700X.  It's also a nice shooting light load.

The 360-145-SWC is hanging on the list with 1.2 inch groups.  This mould is a bit confounding.  However I've noticed that casting temperature and managing mould temperature is very critical.  I expect to post the results of alloy & mold temperature affects on boolit diameter, based on this mould.

The 200-SWC is a 2 cavity mould therefore casts boolits with a very consistent size.  The 358-429 is a outstaning 5 cavity, with 1-2 cavities that vary just a bit but has produced .6 inch groups.  The 145-SWC is dropping the smallest diameter boolits, at least most of the time.  When striving for the best accuracy, moulds with 2-3-4 cavities are more consistent and much easier to work with than moulds with 4, 5 or 6 cavities.  Casting with the 3 or 4 most consistent cavities promises to provide the tightest groups, more on that in the future.  The trade-off is throughput and how long it takes to cast 500 or 1,000 bullets. The best case is 4 or 5 cavities that cast equally.  When shooting groups less than 1 inch, and trying to break the .5 inch barrier, it requires extreme precision.

Magnum powders are now moving up the accuracy list.  The Lyman Cast Bullet Handbook got the load for the 358-429 right.  11.8 grains of H110 under the soft 6 BHN lead produced 1 inch groups with no hint of leading.

Below is an update to the top accurate loads.  The velocity isn't from a chronograph, but based on the recipes.

Rank	Mould	Weight	Group	Charge	OAL	Velocity
1	360-200-SWC	200	0.57	3.4, 700X	Groove	660
2	358-429	168	0.58	4.7, HP-38	1.620	900
2	358-429	168	0.58	5.1, 700X	1.620	1,200
3	158-SWC TL	158	0.61	3.5 HP-38	1.600	810
4	358-429	168	1.00	11.8, H110	1.620	1,260
5	158-SWC TL	158	1.10	5.1 HP-38	1.600	1,129
5	148-WC TL	148	1.10	3.5 HP-38	1.400	928
6	360-145-SWC	145	1.20	3.9 700X	Groove	1,020
7	358-429	168	1.30	10.3,2400	1.620	910
8	140-FN-LBT	140	1.40	5.8 700X	Groove	1,347