Anyone have any experience loading for 256 Newton?

[Bbear]

Naw, SJB358, you know it's just a flash in the pan. Like that youngster the 30 Win

 

[SJB358]

Naw, SJB358, you know it's just a flash in the pan. Like that youngster the 30 Win

Yeah, I’m sure it’ll pass and people will get back to their 257’s and 270’s :mrgreen:

 

[DrMike]

Nothing wrong with that result. Congratulations. That load will do.

 

[Bbear]

Well, took 10 rounds out to run through my Magnetospeed and had MV running from 2981 down to 2851. I'd also loaded 8 rounds and put them in the freezer overnight to see what changes. Oddly enough, taking them one at a time out of an ice chest and shooting over the MS, the velocity dropped down to range from 2913 down to 2880.
Thinking these 'new-fangled' long bullets aren't to the liking of the Metford-style twist for one thing and this powder/bullet combo isn't to the liking of the rifle.
Off to SPS for some 125 partitions I guess.

 

[wvbuckbuster]

How did they group? Dan.

 

[Bbear]

None of them grouped well but then again, it's a fairly thin barrel and it had the MS hanging off of it.
I'm thinking maybe part of the problem is a few of the brass I was using was only 1x fired while most was 3x fired.
I'll try again with just 3x fired stuff and see.

 

[Bbear]

Not worth a crap. Group was scattered over a 6" 'group'. Will try again with the 125 NP and see if I can get anything worth the effort with IMR4350

Also thinking of trying the 125 NP with RL 23 and see how that might work.

I finally broke out the borescope. Never should have done that. This old rifle had been put up wet too many times, I'm guessing. It is pitted and spot-pits the entire length of the barrel. I'm guessing my groups will have to be in the 3" range @ 100 and call it good. That's if I can get it to group that well.

 

[SJB358]

Not worth a crap. Group was scattered over a 6" 'group'. Will try again with the 125 NP and see if I can get anything worth the effort with IMR4350

Also thinking of trying the 125 NP with RL 23 and see how that might work.

I finally broke out the borescope. Never should have done that. This old rifle had been put up wet too many times, I'm guessing. It is pitted and spot-pits the entire length of the barrel. I'm guessing my groups will have to be in the 3" range @ 100 and call it good. That's if I can get it to group that well.

Try a few fire lapping Bullets bear. Might just save it.

 

[Bbear]

Took the teslong borescope out. Here are just a few pics.

Firecracking about an inch in the bore.

And have this for most of the length of the bore.

And near the muzzle:

The lapping bullets might help enough to keep the groups down some. Cheaper than a new barrel.

 

[SJB358]

Nothing to lose in my book. The bore looks like hell but you never know what a 1/2 dose of Tubbs final finish may do to help it. For under 50 bucks and a little time it won’t hurt it.

Plus, I just wanna see that old devil shoot. Saw an original 35 Newton in the Cody Museum. Talk about wanting to commit theft. It was a gem.