Remington Conversion Barrel

[super7]

I getting ready to put a .45 barrel on my remington m/l. I put a .45 pacnor on my savage and went with a 26", 8 groove, #6 contour, 1:22 twist in .45 caliber. I shoot with sabots only. Right now 195 barnes and 200 sst's. My question is, would going with a 1:20 or 1:18 twist be better to shoot these same bullets and possibly some of the .30 calibers bullets? My hopes, are that someone comes up with a good sabot and bullet combo in the future for the larger and longer .30 caliber bullets. Short question what is too fast of a twist for saboted .40 caliber bullets and too slow for the longer .30 caliber bullets?

[dave d.]

super7 I've shot twist's down to 14 twist with sabots (200&195 bullets)with great accuracy. With that said I will say that the 22 twist is the most forgiving. I think making a decision on twist hoping a good sabot for .30cal to .45 might not be a good idea. This might never come about but if it does it will give you a excuse to build a gun specifically for it. Jmo

[super7]

Thanks! I'm ordering a 1:20 twist. Just a hair faster, but still good I hope with the 195/ 200 gr. combos I shoot now.

[spaniel]

In theory, you want a twist fast enough to stabilize your chosen bullet but not too much faster. So with the bullets you mention, that will stabilize in even a 1:28 or 1:30, going faster than a 1:22 should give you no advantage (though in reality I've not heard anyone find the other PacNor twists any worse).

I also have a 1:22 twist, though sometimes I think I should have gone a bit faster in case a new bullet comes out requiring more twist.

As for the 30cal bullets, I think it's been pretty well established that, with current commercially available sabots, .40cal bullets are about as small as you can go in a .45 and expect real accuracy. If I recall correctly Edge shoots .338 bullets but I don't recall if it was out of a .45 or a .40, and he has a pretty labor-intensive process to make custom sabots. The more plastic you wrap around the bullet the worse it is.

Indiana makes it simple, .44 is the smallest legal ML so, during ML season, the .45 with 200gr bullets is about as good as it gets.

[edge]

I mainly shoot 30 caliber bullets from my 1:14 twist 45 but for commercial sabots a 1:20 or 22 will get you everything you need.

I doubt that too fast a twist will hurt, but by keeping things as much in common with everyone else will probably make load development easier.

Many folks don't realize that what appear to be minor changes may make a complete load change necessary!

ie: clean vs dirty on the barrel or the and/or the breechplug.
This may take a tack driver load and turn it into a sabot buster!

Too often folks declare that something doesn't work, or something works better, when in fact they did not start over with their loads when making changes!!

edge.

[Jon]

edge. your the man you pull no punchs and everything you say is the best to your knowledge thank you for any and all input it is very appreciated. thank you
jon

[dave d.]

:)guys i'm working with pacnor right now for a prefit for the 700ml which would allow simple breechplug mods you could do yourself.we will have to see how the first couple go.

[Jon]

dave d. can't wait to hear more.

[Deleted]

already looking for a 700

[rangeball]

Do you mean they will produce a plug that is a direct replacement for the 700ML that will withstand smokeless pressure?

[Deleted]

it goes with the Pacnor im sure

[dave d.]

guys a savage plug is needed for length. We have a 700ml with a hunter bolt nose that we are taking dimensions of of. There are two others that are going to convert and have a hunter boltnose. If a different boltnose is used that will change things.but basically the plug will be pushed into the action .030 so it is purposely long. Trim the plug nose till the bolt closes then take your #c drill bit and deepen your pocket till your primer goes all the way in and your done. The only issue is that even after using the long savage plug it's just about going to make it to the recoil lug. We will have to see how this all works out. It's to bad hunter didn't make that bolt nose longer it would have helped but he did a very nice job. So that's it for now I will keep you guys updated.

[bteague]

Dave I intended to get with hunter this weekend and order his kit.And probably order my barrel Monday.Should I hold off on the barre?Billy

[dave d.]

:)no Billy order away. All the dimensions are off of his boltnose.

[super7]

Guys if you were thinking about converting a Rem. M/L, now would be a good time to pull the trigger. Dave, I talked to Casey at Pacnor. I told him I would try to get the barrel off my Rem. M/L and give him some more measurements. We wanted to see if my Rem. was the same as the one he already has. From the front of the receiver to the bolt face.

[smokeeter]

If Al would chime in, I'm sure he'll have the answer to this question ie. the same barrel measurements for the ML as the CF rifles.

[dave d.]

:)sounds good barry...

[Al]

Aug 25, 2010 20:15:45 GMT -5 super7 said:

Guys if you were thinking about converting a Rem. M/L, now would be a good time to pull the trigger. Dave, I talked to Casey at Pacnor. I told him I would try to get the barrel off my Rem. M/L and give him some more measurements. We wanted to see if my Rem. was the same as the one he already has. From the front of the receiver to the bolt face.

What does he need for measurements?

or if he can wait till Monday, I have a pull off I can send out to him to duplicate.

later, Al

[dave d.]

al he has to pull his barrel and then close his bolt and get a dimension from his hunter boltface to the end of the receiver where the barrel screws in.

[super7]

This is just a second set of numbers to compare to the Rem. M/L action he already has in his shop. This is with using Hunter's 209 conversion also. Casey and Dave have worked out the barrel measurements to be a prefit for the most part. All a person would need to do is file a little off the breech plug where the bolt contacts it. Heck if the remingtons are very close in how they measure out, maybe they can only push the plug back .020 or .015. Thus making for less filing on the end users part.

[Al]

these last 3 Remmys I done, there was about .015 difference in the plugs between the three, and I'm sure if I'd of been a little more careful, they would have been closer.

So they are pretty close right from the factory.

[rr]

DaveD, T have also ordered a pac-nor barrell for remmy 700 ML, also using the hunter bolt nose and having it threaded for the savage breech plug.

[dave d.]

:)great rr we should have some done in the near future. cant wait to see some reports.