Aresenal 125 keith 32

[Mainiac]

I have this mold,and it runs so nice,5 cavity,but it just dont shoot well.anybody on here had an luck with it?
Its 131 gr with a long bottom drive band.i filed a bullet down,so the bands were the same width,and it weighs 115gr.
Im either going to trade the mold off,or shave .070 off the face of the mold,and see if that helps it shoot better.i think it is real ass heavy,,and it makes oblong bullet holes in my 327,,nice round holes in my 32hr ss,,,but in this gun,it shoots patterns,,,6-8 inch groups!!!!horrible...
Ive tried hard lead,soft lead,3 different diameters,hot loads,mild loads,and ive just about had it,with this thing.

 

[RBHarter]

Is it a friction fit in the throats ? Are the throats close to uniform ? Are the throats at least .0005 bigger than the groove ?
If yes .......

Do you have thread choke ? Do you have a clean crown ? How's the forcing cone ?

More expensive question how do the chambers line up with the barrel ?

Last one from my own weirdness files are you driving hard enough/too hard for the gun ? I had a 357 before my enlightenment , and I was too dumb to figure it out then , that shot jackets for 9mm as fast as I wanted to go and an 85 gr GD will go really fast on 8ish gr of Unique . But with proper 38/357 jackets 38+ps were pretty good , 38s were great , tip over that +p in to 357 and I got shotgun groups and sticky cases . Later with the Sec 6 while 38s are ok , now that the throats are matched up a little better , it wants for loads in the second quarter bottom half of load data . The 45 Colts BlackHawk shoots it's very best work just past where it spits out the base pin ....... Not cool , but it just likes to run hard and I can live with the groups just below spitting the base pin out . Its not like there's a whole lot of anything out there that's going to be really aggressive after it runs into 255-265 gr of 1050 fps MV lead making a half inch hole through 2-3 ft of it .

 

[Mainiac]

327 is a gp100 .3125 bore,.314 throats.gun will shoot rcbs98swc,, 1 inch groups,,the 311316,not much larger,,,gun shoots exceptional,,so i know its this mold. Bullets are mirror finished,same weight,all 5 holes,,cast .315....super impressed with the mold,,just wont shoot.

 

[RBHarter]

I think I've had one of those too , not so much a bullet but brass of a particular brand . I did have a bullet that just plain old wouldn't shoot in anything at hand so it went away .......

Might be a case of just enough not enough twist or just enough slip to not make stability ........ I won't wander down that path too many told that wasn't possible so it can't be even if it is readily repeatable .

 

[fiver]

i think it's too heavy personally.
i know a lot of 32-20 shooters that wouldn't even look at anything that weighed much over 100grs.

 

[Brad]

My 32 H&R gets a 100 gr bullet and I’m good with that. I would go 110-115 with the 327 Federal.

 

[RicinYakima]

32 S&W long; 87 grains. 32 H&R 100 grains. 327 Fed 100 grain. 32/20 115 grains. At least for original loadings.

 

[CZ93X62]

The heaviest bullet I have used in any of the 30/32 caliber handguns is 118 grains. Those go in the 30 Carbine BH and 32/20s. All the other calibers use 95-105 grainers.

 

[Bret4207]

Sounds like a length vs twist dilemma. Ruger states they use a 1-14 twist. I can't find anything right off the bat on Smith or Colts preference. Shortening it sounds logical.

OTOH, what a great light 30 cal small game/varmint bullet!

 

[CZ93X62]

Ruger revolvers tend toward 1-20" twists, S&W uses 1-18.75" religiously, and most Colts are 1-16". I'm sure that exceptions exist.

To relieve curiosity, try vCalc's "Greenhill Formula Calculator", which is free to use online. Plug in your values, esp. bullet length. Specific gravity for pure lead is 11.2, for jacketed bullets or alloyed lead 10.9 is a good average. Velocity matters, too.

FWIW, I whole-heartedly disagree with the assertion that a thick base on a cast bullet causes imbalance in flight. The base is the steering end of any bullet, and it 1) needs to be filled-out squarely and consistently and 2) if stabilized correctly by sufficient twist & velocity it will fly true. Weight-forward designs like hollow-based wadcutters and shotgun Foster slugs swap ends as their velocities decay, which is counter-intuitive but easily demonstrated in real time.