Kylongrifle32
08-31-2018, 12:54 PM
Hello all.
I have a 14 inch MGM barrel for my T/C contender in 32/20 Winchester (30/20 it has a.308 diameter bore). I got this barrel with the intention of shooting cast bullets as a good low budget back yard plinker out to 100 yards. I have tried Lee boolits only so far since these are the molds I have on hand. They are .309 120gr RN - .309 150gr FN - .312 160gr R2 tl. I use a charge of 9.7 grs of IMR4227 on all boolits and I have seated them just far enough out so would a cri that the barrel closes freely and I do not crimp them. Since I wanted a very low cost bullet I tried them with out gas checks ( they are all GC style). All the boolits did not group to my satisfaction 2 1/2 to 3 inch groups at 50 yards with the .312 160 gr being the best. I then tried them with gas checks this tightened the group's up but I still would like to get better than 2 inch at 50 yards. I can get .75 inch group out of any 125-130 gr jacketed bullet I have tried. Would a crimp change my groupings. I have a Lyman 311140 mould on the way this is a 130gr sp boolit with a plain base I know gc's are only $35 per 1000 but this is another expensive.
Long story short do you have a favorite boolit / load that can get 1 inch at 50 and 2 inch at 100 yard groups. I tend to favor 4227 in most of my hand gun calibers but I'm open to try others. I have a source of free lead for now and I do enjoy pouring my own so if I can for go the price of gc's this is as low cost as rimfire plinking.
So please help with any advice. Thanks Mike
I have a 14 inch MGM barrel for my T/C contender in 32/20 Winchester (30/20 it has a.308 diameter bore). I got this barrel with the intention of shooting cast bullets as a good low budget back yard plinker out to 100 yards. I have tried Lee boolits only so far since these are the molds I have on hand. They are .309 120gr RN - .309 150gr FN - .312 160gr R2 tl. I use a charge of 9.7 grs of IMR4227 on all boolits and I have seated them just far enough out so would a cri that the barrel closes freely and I do not crimp them. Since I wanted a very low cost bullet I tried them with out gas checks ( they are all GC style). All the boolits did not group to my satisfaction 2 1/2 to 3 inch groups at 50 yards with the .312 160 gr being the best. I then tried them with gas checks this tightened the group's up but I still would like to get better than 2 inch at 50 yards. I can get .75 inch group out of any 125-130 gr jacketed bullet I have tried. Would a crimp change my groupings. I have a Lyman 311140 mould on the way this is a 130gr sp boolit with a plain base I know gc's are only $35 per 1000 but this is another expensive.
Long story short do you have a favorite boolit / load that can get 1 inch at 50 and 2 inch at 100 yard groups. I tend to favor 4227 in most of my hand gun calibers but I'm open to try others. I have a source of free lead for now and I do enjoy pouring my own so if I can for go the price of gc's this is as low cost as rimfire plinking.
So please help with any advice. Thanks Mike