Recently picked up a nice Hepburn with DSTs that was lined down to a .22 Lovell R. Plan is to send the barreled action to John Taylor and have it put back as a 32-40, which is the original cartridge stamped on the barrel (all #'s match). Am thinking a 10" twist is what is normally recommended for heavier bullets, but want to check my memory. Thanks.

Thanks. Looks like the 12" twist is the way to go. Especially as there is no such thing as "over stabilization" of a bullet.

If I were putting on a new barrel then I would consider the 32-47. However, as John will be 'restoring' a nice original barrel that is marked 32-40 from the factory, I'll stay with that and suffer the consequences and simply do my best with it. Hopefully, I will find a 200-220gr bullet and load that it likes.

An overstabilized bullet will fly nose high during the downward portion of the arc of flight. The result is higher drag and a perhaps a smidgen of lift and, with spitzers, increased turbulent flow around the bullet. Not sure what this does to accuracy, but it is something that I try to avoid.

SSShooter I now understand your reasoning for keeping it a 32-40 as the barrel is so marked but what I don't understand is the 10 or 12 twist far from staying with the original configuration of the original twist rate. On one hand you are saying you want to keep it original to the markings on the barrel and on the other you are planning to do just the opposite? You would be better served to replace the barrel and if not the next fellow to own the rifle or the one there after is going to get something that is not what it is suppose to be per the original markings on the barrel! It just doesn't seem to be the right thing to do for the sake of others and in my mind it does not do the original barrel any well deserved justice.

JLouis

Personally, I see nothing wrong with lining the barrel with any twist rate. If he wants to shoot the 1.290 long PJ bullet, he will need that 12 twist and it sure won't and can't be detrimental to the bullets flight (pun intended) as there have probably been more 250's shot in 32 cal with that bullet than any other bullet.

I would have chose a 14 twist, my self if 200 - 220 gr bullets are used.

As far as originality goes he can always say that a famous old gunsmith relined it with that twist rate, because he had the vision that long spitzer bullet would be the thing of the future.

It's going to be a reline and that will most likely be visable at one end or the other, it's not dangerous in anyway sure as heck, not a orginal barrel.

Regarding F W Mann, while his research is extremely commendable (I have his book and have read it twice), his accuracy has been exceeded by quite a bit. If you use his book to work up loads, to use in match shooting, you be at a considerable disadvantage.

Frank

Glenn, it may not matter when shooting smokeless, but my CPA ( i don't remember at the moment whether it's 1:14 or 1:15 twist ) will tip 200gr bullets in cold weather with black powder.  It would be intersting to see how a slightly faster twist would do.

Chris.

The bores on my schuetzen rifles are completely cleaned between shots.  Time is not a big concern so I use however many patches it takes.  I don't dry them, but the last patch that is run through is only very slightly damp.   I wipe with a Ballistol and oil mixture.   When shooting paper patched bullets from my schuetzen rifles I do dry the bores however.

Speeding up the bullet reduces tipping significantly.  I can shoot Fg in summer at higher elevations with minimal tipping.  Down on the coast I need FFg to minimize it but it's always present.   If I shoot Fg in winter at low elevation tipping is very evident.

I don't remember the exact charge weights as I throw them from a measure, but they are somewhere around 42gr.

If I'm only shooting at 100m I can shoot Fg fine without any tipping even in cold weather.

Chris.