.35 caliber R.O.T

[Marlin Junky]

I've been getting good results with a .35-336A ('51 vintage) with its 16" twist (boolits up to SAECO 352) and was wondering if I'd give up accuracy with a 12" twist. I'm thinking about buying a Ruger Hawkeye in either .338 Federal or .358 Winchester but those fast 10" and 12" twists (respectively) scare me. I don't want to shoot hard (over BHN 14) boolits to get good accuracy. If the fast twist is going to be problematic, I'll just wait for the stainless 336 XLR in .35 Remington. The Marlin will have a 24" barrel, and be just about a 1/2" longer overall than the Ruger with its 22" barrel. I believe when the .35 Rem is loaded to it's full potential in the new Marlin, it'll probably approach 2300 fps with a SAECO 352. I'm getting over 2100 fps with the 248 grain SAECO boolit from my 56 year old 336A and it seems to be taking the load in stride.

MJ

[waksupi]

My one .358 Win. has a 1-12 twist. It shoots heavy bullets, right up to specs on velocity, and good accuracy. Looking in P.O. Ackley's handbooks, I see I am actually surpassing some of his listed loads in velocity.

[MtJerry]

My one .358 Win. has a 1-12 twist. It shoots heavy bullets, right up to specs on velocity, and good accuracy. Looking in P.O. Ackley's handbooks, I see I am actually surpassing some of his listed loads in velocity.

Would you care to share some of your load data. I just bought a BRowning BLR in 358 Winchester and have not yet started loading for it (waiting on the big brown truck with my new dies:-? ).

Most of the data I have seen with cast 200gr. bullets in pretty anemic.

I am looking to try my Lyman 358315 (200gr GCHP) with it.

Jerry

[Marlin Junky]

Here's some AA data that qualifies as not anemic. I formated the max loads in red. The pressure is in terms of CUP. Pressure data was not supplied for the starting loads.

205 RNGC LY358315, COL: 2.595"

5744 25.0 1820 5744 30.0 2091 42,600
2015 36.9 2174 2015 41.0 2470 41,600
2230 36.9 2061 2230 41.0 2342 43,300
2460 38.7 2132 2460 43.0 2423 42,700
2495 38.7 2177 2495 43.0 2474 44,800
2520 40.5 2167 2520 45.0 2462 41,200
2700 44.7 2080 2700 47.0 2213 42,600

MJ

[MtJerry]

Thanks Marlin Junky!

Is this data from the Lyman book?

[Marlin Junky]

Thanks Marlin Junky!

Is this data from the Lyman book?

AA is short for Accurate Arms.

MJ

[MtJerry]

Yeah, well, I knew THAT ...

Just curious of the source. Thanks again!!!

[Marlin Junky]

MtJerry,

AA data, at least to me, means it came from AA. If it was from Lyman, I would have said Lyman data.

MJ

[DonH]

Single shot guys are using twists as fast as 10" and 12" in .32, .35 and .38 (.375") with soft (20-1, 30-1) plain-base bullets with no problems related to the twist. Admittredly, they are shooting at moderate velocities.

[S.R.Custom]

I've been getting good results with a .35-336A ('51 vintage) with its 16" twist (boolits up to SAECO 352) and was wondering if I'd give up accuracy with a 12" twist.

I've had a few BLRs in .358 Winchester (1:12), and as you would expect, they all have shot heavy bullets really well, even at "utility" load velocities. (For steamy loads, I use the Sierra 225gr SPBT with a case full of H335, and it shoots those at sub MOA.)

But what you should be aware of is, a 1:12 twist will spray pistol bullets, particularly cast bullets. Anything from 180grs on down has been a disappointment. Well, actually, "disappointment" is a strong word. If I want to shoot small .35 caliber bullets, that's what my Marlin 35 Rem is for... :mrgreen:

Also, the rifling in the Browning is not particularly aggressive, so alloy hardness will have to be kept fairly hard.

[Marlin Junky]

What about RCBS 35-200FN cast soft enough to expand and shot fast enough for 200 to 300 yard shots? For example, said boolit cast BHN 13 and launched at 2400 fps from a 12" twist .358 Winchester? Would it be asking too much to expect a load like this to shoot 1.5 MOA all the way out to 300 yards? If that can't be done then I suppose I could do the soft-point/hard-shank thing.

MJ