Over the years, I've used just about every combination of loads available for the .30/30.
Most of what the previous posters have said is spot-on.
I have a few different twists however.
I prefer Reloader 15 both for power and accuracy, with H4895 coming in a close second for the heavier loads. I prefer the 150gr bullets particularily due to better performance on smaller deer. I can personnally attest to the performance of the Sierra 125jhp on deer. It's a super performer and with the correct powder charge is exceptionally accurate. (It actually requires a bit less powder than the Speer 130grFN, and performs MUCH better although trajectory at longer ranges isn't quite as flat).
Enough discussion. You wanted "recipes", here they are !!!
Hunting loads (all purpose too!)
Cases: All loads- trimmed to min. spec. and sorted to headstamp. Partial full-lenght sized to minimize stretch between loadings.
Remington 150gr CorLokt; seated and Lee Factory crimped to mid-cannulure
Reloader-15; 35.0gr (36.0max but a little too warm in my gun) 2,400fps (20"bbl).
Remington 170gr CorLokt; 33.5gr Rl-15. Awesomely accurate from my rifle. Amazing performance on deer. (it expands a quick as the 150 and has better penetration. Perfectly matched to the .30/30. Can't say the same for ANY other 170gr I've used).
Speer 130FN; I can't recommend this bullet for .30/30. It dosen't expand readily on smaller deer. Might be better in the new .308MX.
Use 37.5gr of RL-15 for 2,450fps.Decent accuracy.
Sierra 125gr FN; 36.5gr RL-15 (cannulure is set to seat this bullet deeply). Exceptionally accurate and effective on deer and pigs to ~250lbs.
Lee 150gr FNGC (mine cast to 158.5gr w/gas check, lubed with SPG). Size to .311" for Marlin MicroGroove barrels. .309" ok for Winchester and others.
RL-15 @ 32.0gr for 2,250fps. Accurate and devastating on deer and heavier game. I prefer this load to all others in my .30/30. Performs much like the Rem. 170gr CorLokt, but MUCH cheaper !!!
Plinking load:
Above cast bullet over 7.0gr Unique. (no gas-check, tumble lubed, no need to size) My brother calls this the coffee can load. Load up a coffee can full of them for about a "buck". Will hit a soda can at 50yds with iron sights set to "hunting" loads as listed above. (at least with his pre64 M94). About like shooting a .32/20. Caution, they are "dangerous" to deer! An aquaintance of my brother had a "can" full of them for plinking and small game hunting. Was hunting "snow shoe's" in up state NY in the deer season. Whitetail Doe took one to the left flank, and bullet lodged under the hide on far shoulder!. Ran about 25yds and dropped!). Shooter was almost as amazed as the deer was!
You can imagine what it does at 2,200fps if this is what it does at 1,200fps! With a sized, lubed and gaschecked bullet, try 10.0gr of Unique for 1,500fps. Awsome plinking/target load. Ditto 15.0-16.0gr #2400.
For much more info and discussion from very informed forum go to
www.marlinowners.com. These guys are very knowledgeable and don't descriminate against Winchester owners. Most in fact own as many "Winnies" as Marlins. And they shoot them as well.