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Bird
12-26-2016, 10:40 PM
I have 1 30-30 rifle that takes this bullet when it is seated and crimped in the upper groove/cannelure, for a cartridge oal of 2.500''.
I have 4 other barrels that will not chamber the above settings, but the bullet must be seated to an oal cartridge length of 2.400''. This means the bullet is seated deeper into the case, and the neck covers the front driving band of the bullet. I dont have a problem with this, but would like to know if the upper bullet groove is supposed to be a lube groove or is it for crimping?
I have not been lubing the front groove...will I run out of lube in a 26'' barrel? Yes, the cases are trimmed to the correct length.

runfiverun
12-26-2016, 11:48 PM
the top one is a crimp groove the boolit only has one lube groove.
no you won't run out of lube it doesn't work like that.
the lube might stop flowing at a point about 18" down the barrel. [the relax point]

but you won't run out unless your using a lithium stearate based grease and your temps get so high the Li.St. goes into caking mode and either fully locks the oils up and burns them or dumps it all out in one place.
If you get your barrel up to 450-f you might have a few other things to look at before worrying about that happening.

Bird
12-27-2016, 12:20 AM
R5R,
Thank you. I run Ben's red, so I think there will be no problem.

runfiverun
12-27-2016, 01:25 PM
I would look at the diameter on your boolits nose.
the 30-150 should be just barely over .300 on the nose.
I crimp into the groove and when I chamber the round it engraves the nose in the rifling fairly tightly.
I need a good crimp to get the round back out if I don't fire it.
which quite often I don't because I use it for hunting.

Bird
12-27-2016, 08:25 PM
R5R,
The diameter of the bullet ahead of forward driving band is 0.299. When seated to the crimp groove, the bullet shows engraving marks at about 0.175'' down from its tip. It sounds very similar to what you have. I have not slugged the factory barrels, but it appears winchester made them a bit on the tight side, or they are a bit shorter on the throat lengths, which is more likely. The aftermarket barrel I have been shooting seems to digest anything I put in the chamber. I will adjust my powder charges accordingly when seating the bullets deeper in the casings, and I don't forsee any problems.
I am trying to reach around 1800 to 1900fps. I don't have any 4759 or H4895 powders, which would seem ideal for this velocity range. Any suggestions? I am trying imr 4198 and w748, which may be too much for the 10'' twist aftermarket barrel, and reduced charges may not provide decent results. I was going to try these loads in the 12'' twist barrels to see if the results would be better. I have used green dot and unique powders before, but I want to try something with a bit more oomph.

runfiverun
12-27-2016, 09:42 PM
1900 should be no problem at all. [I don't know the twist rate for almost any of my rifles
I just work with them until they do what I want]
but 1900 seems to be a sweet spot in the 30 cals as far as the easy button for accuracy and hunting effectiveness.
I have run that boolit all the way up past jacketed velocity's in the 94's and in both of my bolt guns. [somewhere around 2400 fps]
it works well with AA-2230, 3031, and even 2400 powder speeds.
[I prefer IMR 4895 over the H-type BTW]
I use 24.5grs of AA-2230 as my bulk cast load in the 30-30 with the rcbs 150 it just works well [and as a bonus is my 55gr AR load too]

4198 is a good powder speed, it's easy to work with and ignites easily which makes it easy to tune up and down a bit at a time.
I'm not a fan of 748 at reduced velocity's it has just never shot well for me.[I think it needs a magnum primer to do it's best]

Bird
12-27-2016, 10:10 PM
I have imr4895, and might try some aa2200 loads, although it is a faster powder than the 2300. I may also try some imr 4064. I will stay with the 10'' twist for the testing, and try different alloy mixes.

runfiverun
12-28-2016, 01:05 AM
any of those should easily get you where you want to be.
if you had a 180-200 gr boolit 4831 would get you bout there too.

pipehand
12-29-2016, 06:30 AM
I use that boolit crimped in the top groove in 2 Marlin 336's with no chambering or unchambering loaded rounds problems. My stepson's Winchester Canadian Commemerative wont chamber the same rounds. I seat to crimp over the drive band for his.

rond
12-29-2016, 10:48 AM
You can always trim your cases shorter.