Jack Suber Posted March 6, 2006 Share Posted March 6, 2006 I was wondering why people are loading their 40 minor loads short? I understand if they are loading for a Production gun, but many people I know are doing the same for STI type guns with longer barrel throats. Just curious as to why? Are people seeing that these loads are softer "feeling" if they are loaded shorter? Just curious. Link to comment Share on other sites More sharing options...
mcb Posted March 6, 2006 Share Posted March 6, 2006 I would think that if you loading minor you likely using light bullets (135-155gr) and with bullet that light they are very short and thus you simple cannot leave them long as you will not get enough bullet in the case to hold on to it. I now when I load 135gr Berry's I load them to 1.125 even though I load 180gr to 1.135 for my XD's. Even at 1.125 there is probably on about 0.100 of an inch of bullet in the case. If I loaded that bullet out to 1.2 I don't think it would stay in the case. Just and Idea mcb Link to comment Share on other sites More sharing options...
Patrick Sweeney Posted March 6, 2006 Share Posted March 6, 2006 Long oal and light loads leads to larger case volume than the powder charge "likes." As a result you get dirty, inconsistent loads. Shortening the oal allows for a samller sD for a given load. It also acts as a visual indicator: long oal; IPSC Major. Short; Minor. Link to comment Share on other sites More sharing options...
Bigbadaboom Posted March 6, 2006 Share Posted March 6, 2006 Long oal and light loads leads to larger case volume than the powder charge "likes." As a result you get dirty, inconsistent loads. Shortening the oal allows for a samller sD for a given load.It also acts as a visual indicator: long oal; IPSC Major. Short; Minor. +1 Link to comment Share on other sites More sharing options...
Jack Suber Posted March 6, 2006 Author Share Posted March 6, 2006 Long oal and light loads leads to larger case volume than the powder charge "likes." As a result you get dirty, inconsistent loads. Shortening the oal allows for a samller sD for a given load.It also acts as a visual indicator: long oal; IPSC Major. Short; Minor. +1 That makes sense. I have been loading minor loads for my son (180s) and loading them long. Primarily because I was lazy and would only have to switch powder measures on my 1050. Guess I'll have to set my 550 up for shorter loads. Thanks again. Link to comment Share on other sites More sharing options...
al503 Posted March 6, 2006 Share Posted March 6, 2006 (edited) That makes sense. I have been loading minor loads for my son (180s) and loading them long. Primarily because I was lazy and would only have to switch powder measures on my 1050. Guess I'll have to set my 550 up for shorter loads. Thanks again. Just get the Redding Competition Seating die and you can get whatever OAL consistently each time just by turning the micrometer. Edited March 6, 2006 by al503 Link to comment Share on other sites More sharing options...
Harmon Posted March 6, 2006 Share Posted March 6, 2006 also with the shorter oal, you get the same velocity with less powder, thus less recoil....one of the biggest things driving someone to shoot minor Link to comment Share on other sites More sharing options...
Old Blind Squirrel Posted March 7, 2006 Share Posted March 7, 2006 I load MG 155 JHP's to 1.200 behind 4.5 Titegroup for a PF of 126+ for steel loads. My STI likes this length and it feeds like butter through MY gun at this length. YMMV Old Blind Squirrel Link to comment Share on other sites More sharing options...
Front Man Posted March 9, 2006 Share Posted March 9, 2006 I wouldn't want my bullets skidding from the case mouth to the rifleing. That's just me. FM Link to comment Share on other sites More sharing options...
Patrick Sweeney Posted March 9, 2006 Share Posted March 9, 2006 Legions of PPC shooters have shot trainloads of .38 Special ammo through .357 Magnum revolvers, for X-ring accuracy. So if you're worried about accuracy, don't worry. Link to comment Share on other sites More sharing options...
Flexmoney Posted March 9, 2006 Share Posted March 9, 2006 I think most will agree that the first thing to look for when adjust OAL is to get the OAL that feeds best in YOUR gun. That is #1 for me, anyway. After that, I'd change powders if I had to to keep the gun feeding correctly. (If my powder/OAL combination caused pressure problems, for example.) Link to comment Share on other sites More sharing options...
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