357 Maxi starting load

[cudatruck]

anyone have a starting load for the maxi for this combo? noe360180 bullet over lil' gun or H110? bullet is a wide flat nose design. it measures .730 from the bottom of the gas check to nose and .412 from the bottom of gc to bottom of crimp groove. my barrel is on a sb1 frame with the large firing pin so only looking for starting loads to try and see if i can get this thing to shoot without flowing the primers back into the firing pin hole. i have tried sierra 180 fpj over 19.5 gr. of h110 and got cratered primers. hornady 140 ftx over 21 gr of h110 were fine. all in max brass with federal small rifle primers. OAL was 1.990.
Loaded some rounds in 357 MAG cases. hornady 180 ftx over 13.0 gr of h110 cratered fsr primers. 12.5 was ok.
OAL of these was 1.710
sierra 180 fpj over 15.0 of h110 at 1.800 OAL was ok. same with 140 ftx up to 16.0
also berrys 125 plated up to 7.5 gr of HP38 is ok at 1.590 OAL.

[cudatruck]

I know im all over the place with this. any load data i find is suspect with this rifle. i have to reduce considerably for safety with this thing. yet some powders do not like being reduced? would really like to find something it would like with more velocity than trail boss!

[kevinsmith5]

What primers are you using?

[quickdtoo]

This should help. 

Tim

http://www.reloadammo.com/357max.htm

[quickdtoo]

What primers are you using?

all in max brass with federal small rifle primers. OAL was 1.990.

[gendoc]

This should help. 

Tim

http://www.reloadammo.com/357max.htm

 
dang tim, thatsa from bama !!! i bet theresa couple here that will disagree as normal

[cudatruck]

thanks for the fast responses. Tim, i have that page saved to my favorites. it only lists top loads im looking for a safe starting point. with 215 gr he only lists w-296. i can use h110 instead but where to start? how far can i SAFELY reduce this powder? I found out really quick to only use small rifle primers. I was using federals. bought some remington 7 1/2 br primers on advice. they are suposed to be the thickest at the cup. i will use the remingtons for any more loadings. I am going to try 180xtps with lil gun starting around 15 gr. is that ok? OAL will be 1.890. some data i have shows 180 JHP over 18.5-20.5 of H110. could i safely reduce to 16.5?

[quickdtoo]

The Hornady 8th lists Lil'gun for the 180gr XTP-HP with a COL of 1.890" as 10.4gr start to 22gr Max in a 10½" revolver barrel, but they list 16.7gr start to 21.6gr max in the 14" TC data for the same bullet and COL, Rem 7½ primer is specifically recommended also. 110/296 aren't powders to be reducing very much, Hodgdon has strict warnings about it.   

Tim


http://data.hodgdon.com/main_menu.asp

For those loads listed where a starting load is not shown, start 10% below the suggested maximum load and then approach maximums carefully, watching for any sign of pressure (difficult extraction, cratered and flattened or blown primers, and unusual recoil). H110 and Winchester 296 loads should not be reduced more than 3%.

Reduce H110 and Winchester 296 loads 3% and work up from there. H110 and Winchester 296 if reduced too much will cause inconsistent ignition. In some cases it will lodge a bullet in the barrel, causing a hazardous situation (Barrel Obstruction). This may cause severe personal injury or death to users or bystanders. DO NOT REDUCE H110 LOADS BY MORE THAN 3%

[mechanic]

I've also found on H110 it's best to crimp, something I don't normally do.  I get really sooty cases with uncrimped.  I'm shooting 19 gr. of H110 behind a 180 gr. XTP.  I used other powders for my 168 gr. cast.
 
Ben
 

[quickdtoo]

Ben makes a good point, crimping for ballistic uniformity is also recommended in the Hornady manual in the revolver data, but not in the TC data. 

Tim

[cudatruck]

ok tim, im going to load some at 15.0 to start and work up from there to see if i can get anything over what i can safely shoot in a MAG case by using MAX brass. if i can't then there would be no reason to use max brass! someday i will have to re fit this barrel to an sb2 frame.