30-30 load development and casual observations

So I'm running low on the 170 that I got from my dad's place and dispite really liking how well it shoots its time to put in some serious work finding its replacement. I had kinda hoped that they would be close and I could abbreviate the effort using my previous success and stumble in short order to a very close load. My cast boolit is waaay different and I'll have to start from scratch. The old 170 was .969" and traditionally lubed. My cast boolit is .928 175 grains and powder coated.View attachment 1130615

I'm not seeing a grove for the crimp. How are you planing to keep these from moving (shortened during recoil, and feed) with a tube magazine feed?
 
I'm not seeing a grove for the crimp. How are you planing to keep these from moving (shortened during recoil, and feed) with a tube magazine feed?
I just roll crimp right into the bullet. Works splendid on 357 in a Marlin lever can't see how it wouldn't work just fine... my dad's rounds with the 170 weren't crimped at all. I found that strange.
 
I'm not at all a fan of the 94 front sight compared to the Lyman globes on my Marlins. I'm trying to determine if a front sight vs a different target is the better choice. I have some red paper plates ready for the next trip.
That's what I've started doing with iron sights.
Years of welding among other things have made my eyes not as good as they once were.
Mt brother who's 10 years older than me. Said it doesn't get any better when I complained one day.
On your new bullet...
I tried one with a similar profile and ended up seating it deep because it hit the lands on the Marlin.
 
That's what I've started doing with iron sights.
Years of welding among other things have made my eyes not as good as they once were.
Mt brother who's 10 years older than me. Said it doesn't get any better when I complained one day.
On your new bullet...
I tried one with a similar profile and ended up seating it deep because it hit the lands on the Marlin.
A bullet hitting the lands according to the rcbs cast manual is as good as it gets. A cast bullets ability to resist jump deformation isn't exactly great... if I can get a cast boolit to touch or slight engagement I'm inclined to do so unless I can find a reason not to.
 
A bullet hitting the lands according to the rcbs cast manual is as good as it gets. A cast bullets ability to resist jump deformation isn't exactly great... if I can get a cast boolit to touch or slight engagement I'm inclined to do so unless I can find a reason not to.
Mine where hitting hard enough the action didn't want to close...
 
Can you remind me how fast you’re pushing those cast bullets? I have a load I want to try with the heavier MBC bullets sized for micro groove rifling, but it’s in the 1400-1600 range.
 
Can you remind me how fast you’re pushing those cast bullets? I have a load I want to try with the heavier MBC bullets sized for micro groove rifling, but it’s in the 1400-1600 range.
My microgrove is in 357. In that I run a max load of #9 with my cast at 13.7 grains. This win 94 has standard rifling and 26 grains of tac is no problem with a Missouri 170. If your at .310 I'd say send it.
 
Can you remind me how fast you’re pushing those cast bullets? I have a load I want to try with the heavier MBC bullets sized for micro groove rifling, but it’s in the 1400-1600 range.

As John suggests... the key to an accurate MicroGroove bullet is bullet diameter. I drive cast bullets in my .41 Marlin MG over 1700fps with excellent accuracy, and a .30-30 Marlin MG with cast 170's over that, even. The bullet themselves DO make a difference, besides the correct diameter... I prefer plain (square) base bullets over bevel base bullets, or a gas check if the velocity demands it.
 
Keeping it simple today; 50 .45 Colt rounds using T & B 250gr coated rnfp over 8.5gr Unique. Might get some .38 spl cases ready to load with 5.0gr Unique and Silver State 158gr swc.
Like I need more .38 spl, but, gads, those sure are fun to shoot! Heading to the desert early next week.:)

Edit: Gadzooks, I thought this was the 'Loading room today" sub-forum! Sorry 'bout that.
 
As John suggests... the key to an accurate MicroGroove bullet is bullet diameter. I drive cast bullets in my .41 Marlin MG over 1700fps with excellent accuracy, and a .30-30 Marlin MG with cast 170's over that, even. The bullet themselves DO make a difference, besides the correct diameter... I prefer plain (square) base bullets over bevel base bullets, or a gas check if the velocity demands it.
I think it also depends on the purpose. For making noise, anything with a profile will work. For target work, I'd probably look at a SWC-HP like the Hornady Frontier. For hunting, things get a lot more interesting because now you're looking at creating a wound channel at variable distances. Back when I hunted with a Marlin .357 carbine, I loaded Speer 140 and 160gr. JHP. They had a nice SWC profile and I could run them very hot. These days I'm pushing the .358" LBT-style 200gr. WFN-GC bullets from Cast Performance to near 2000fps from a Marlin 336T in .35 Remington - when I hunt with the lever gun.

They feed really nicely, the gas check and clearcoat CP uses let you run them like jacketed - I run them over IMR 3031. I don't see why they wouldn't feed just as well in a MicroGroove Marlin .357 Magnum. The 170 and 180gr. LBT-style WFN-GC's would also be worth a look.
 
So I got to test my blue dot and berry's bullets combination. I initially struggled to get a good point of aim so I got them to print where I wanted, but this was only shot 50-100 I've ever taken with my new rifle. Overall I was very pleased at the result of the test not having any real time on the pond loading this cartridge or shooting this rifle. I shot 15.2-16.8 and I ran out of plates so my 17.0 load remains. 15.8 or 16.2 would work just fine for Silhouette so I'll choose the 15.8 because my range is only 100 yards for rams. If I was at a 200 yard event I'd probably choose the higher charge, but I don't feel it nessary. 20230305_121523.jpg
 
Most don't think of the 30-30 as a varmint gun, but it works great as a single shot with a 110 grain Sierra hollow point out of an H&R handy rifle. I have a 2 1/2 power scope with a post mounted and it works great for coyotes at close range at night. Don't have to worry about bullet shape when using s single shot, and the entire gun is short enough to move quickly out of a truck window when the critter is answering the call.
 
Most don't think of the 30-30 as a varmint gun, but it works great as a single shot with a 110 grain Sierra hollow point out of an H&R handy rifle. I have a 2 1/2 power scope with a post mounted and it works great for coyotes at close range at night. Don't have to worry about bullet shape when using s single shot, and the entire gun is short enough to move quickly out of a truck window when the critter is answering the call.
I'd love to have a bolt gun. There are 2 I know of. A Steven's and a winxhester 788.
 
Never seen one... I think they made a hornet ????

Hmm. Not sure on the Hornet. .222, 22-250, 6mm Rem, 7-08, .308[I had] and 30-30. Could be others, just not sure. Not all that pretty, but, mighty accurate. I looked for a 22-250 for a spell, but, the lever bug bit and that was that. Very underrated rifle.
 
I did a IMR4350 test with 160gr ftx bullets and got a one hole group of 7 at 25yd.
Only down side is you give up about 100fps compared to the accurate load with leverevolution.
 
I did a IMR4350 test with 160gr ftx bullets and got a one hole group of 7 at 25yd.
Only down side is you give up about 100fps compared to the accurate load with leverevolution.
But you gain that temperature stability that everyone touts as the most important thing in reloading.
 
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