30 sherman magnum

[elkaholic]

Yes, its a 28" barrel. H20 capacity about 98 grains.

 

[tim_w]

Thanks that's more than I had guessed. Nice

 

[elkaholic]

A little more Max load testing today:
28" Bartlein 9 twist
230 Berger. F215. ADG brass

RL33
91 grs. 3111'
92 grs. 3160*. slight x mark and bolt lift

215 Berger
92 grs. 3246'
93 grs. 3289'

N570
88 grs. 3259

*The only round that had pressure signs was the the 230 @ 3160'
All primer pockets still tight after 3 firings at these velocities.
I'm not suggesting that anyone should run these loads, but I think you get the idea of the cartridge and brass capability with N570 and RL33.

 

[Rhovee]

Now let's see where accuracy lies.....

 

[elkaholic]

Now let's see where accuracy lies.....

Yes!

 

[elkaholic]

More pressure/velocity tests:
30 SM 28" Bart 9 twist
215 Hy
F215
RL26
79 grs. 3117
80 grs. 3132 Bolt click
81 grs. 3221 Heavy Bolt
*79-79.5 max in this rifle

N565
82 grs. 3099. pressure good
no more loaded but 83 likely max
around 3140?

 

[Rhovee]

Your RL 26 and H1000 are on par with what my 30/28 Nosler did. Accuracy for both was 3100 with 26" barrel and 215's

 

[westcoasthunter]

elkaholic, so with your N-570 and 230 bergers. i think i seen you had 86grs of powder and got 3080FPS. my question is that with once fired brass? or did it take a couple shots to get up to that?

 

[elkaholic]

elkaholic, so with your N-570 and 230 bergers. i think i seen you had 86grs of powder and got 3080FPS. my question is that with once fired brass? or did it take a couple shots to get up to that?

Once fired with a moderate load and you should be good to go.

 

[elkaholic]

Just got some 245's in so loaded up some RL 33 and ran them over the magneto speed. It looks like 3039 is about what I would consider max in my rifle. Just very slight bolt lift was the only sign of pressure starting.
Web was good, no xmark, no flattened primer, case sized back to spec and primer re seated TIGHT! This was the 7th firing on the brass.

 

[westcoasthunter]

What are you thinking you would get with N-570 and the 245 Bergers ?

 

[elkaholic]

What are you thinking you would get with N-570 and the 245 Bergers ?

3000' or a little over likely.

 

[westcoasthunter]

Hmm dang now I might have to look at the 230 A-tips and the 245 Bergers for hunting **** Options

 

[codyadams]

Any issues with a carbon ring or fouling from rl33? I have thought about trying it in my nm but don't know if I should. So rl33 is getting better velocity than n570?