20x47L

[Seddo]

Hi guys,

I was wondering if anyone has played with a 20x47L?

Seddo

[Ovenpaa]

20-47 or 22-47? Wife shoots a 22-6.5x47 with SMK 80's out to 1200.

[Seddo]

I meant a 20-6.5x47Lap.

I was looking for a new 20cal barrel and saw lots of good things written about the 20x47Lap. You can push a 55gr Berger (.381 BC) at 3800fps. People are using them to shoot 1000m in the states, the only downside i can see is wind drift.

The intended use of the rifle isnt target shooting but it could be fun to try out at the closer ranges on days with little wind.

[Ovenpaa]

I meant a 20-6.5x47Lap.

I was looking for a new 20cal barrel and saw lots of good things written about the 20x47Lap. You can push a 55gr Berger (.381 BC) at 3800fps. People are using them to shoot 1000m in the states, the only downside i can see is wind drift.

The intended use of the rifle isnt target shooting but it could be fun to try out at the closer ranges on days with little wind.

Ah the varmint bullets, they have good BC's and I see no reason why you cannot push the bullet at that speed with a good dose of H4831SC or maybe N560 behind it. My only concern would be will the bullets take the MV, with a 1:8 twist at 3800fps they may fail with the rotational forces. Typically spin a bullet up too much and you see a puff of smoke a fraction after you shoot. Worth checking up on. This is also why we went for SMK 80's (moly coated) with the 22C

What I can say is her 22-6.5x47 (22C) with 'improved' shoulders is a hummer, at 100 it shot an easy .190MOA with a development load and works very well at 1200 yards. 3600fps is easily attainable, the wife keeps hers down to 3300 fps and barrel life (TrueFlite) is outstanding, it is also very light on the brass.

SMK's are a lot cheaper than Berger over here as well

Good luck with the project, these little guns are very rewarding. I can still remember a call over the radio one day at 1200 yards from the butts asking "What's the bloke on 6 was shooting" The RCO replied it was a woman with a .22 The silence from the other end said it all....

[Seddo]

A few people have said that they get the bullets blowing up in 8 twist barrels, i have 2 barrel options, a 9 twist which i think is about right for a 55gr projie and a ruger varmint take off with a 12 twist.
Sierra dont make a 20 cal projie bigger than 39gr and its BC is a lot lower than the 55gr Berger. I have 2 options, spend the extra $350 and get a 9 twist or keep the 12 twist and see how fast i can push the 39gr Gamekings.

[Seddo]

I ordered a 9 twist benchmark barrel.

[Ovenpaa]

What action are you going to use?

[Seddo]

Stevens 200 (Savage without the accu-trigger)

A mate wanted another barrel for his so we split the cost of a new rifle ($480) so it cost me $240. I have ordered a rifle basix trigger, all i need to do now is find a stock and it should be GTG.

[Ovenpaa]

Stevens 200 (Savage without the accu-trigger)

A mate wanted another barrel for his so we split the cost of a new rifle ($480) so it cost me $240. I have ordered a rifle basix trigger, all i need to do now is find a stock and it should be GTG.

Sounds like a nice deal! The Stevens will certainly benefit from the Basix trigger, and you have a good choice of stocks, we do not seem to be able to buy the Stevens over here, well at least not easily which is a pity.

My wife uses a Savage BVSS stock which seems to suit her and they often come up second hand over here. I nailed a Tubb 4 way on the back of it but she says it is not necessary so no doubt that will be on fleBay soon.

She opted for a Savage target action with the AccuTrigger, personally I don't like it but that is a personal thing, give me a Barnard any day. She has very good results with hers and it looks pretty standard when it has not go the front plate and rear bag rider on it.

Good luck with the build, what are you going to do about chamber reamer and dies? you have a fair amount of necking down to do, I have a feeling her first die is a 6BR followed by Forsters but I would need to look, regardless I think you would certainly need to do it in three stages.

[Seddo]

My gunsmith has a 20x47Lap reamer (20BR too). As for dies....

Sizing:
Redding S Type 6.5x47L and get a set of bushes

Seating:
Redding S Type
Get a wilson blank and run the reamer through it.

The guys from woodchuckden list a wilson sizing die but i havent called them to ask. They dont have email.

[Ovenpaa]

My gunsmith has a 20x47Lap reamer (20BR too). As for dies....

Sizing:
Redding S Type 6.5x47L and get a set of bushes

Seating:
Redding S Type
Get a wilson blank and run the reamer through it.

The guys from woodchuckden list a wilson sizing die but i havent called them to ask. They dont have email.

Just checked and she uses a 6BR to do the initial size followed by 270, 260 and 250 bushes, this always pushes the mouth in slightly so I put an E22 mandrel through when it is down to size and then use the 250 again, I use Imperial sizing wax as a lubricant and always end up trashing the first case of a new lot, no idea why... Hers is a no turn neck.

My view is the bushing stages are as big as I would want to go and you will be going down a further stage as well.

Bushes are not cheap either and I seem to be buying the UK supply of bushings in .001" incriments for my 7mm at the moment.

Have you looked at www.saubier.com?

[Seddo]

I had a quick look, will have to look again when i have some more time. I am looking at 2 months (if the barrel turns up in time) before i can start shooting this rifle so there is no rush.

I neck 221 fireball cases out to 30 cal in 1 step and they seem fine. I did trash a few when i was adjusting the dies but once it was sorted i havent lost any. It might be different going down, the only thing i have ever necked down is 303 to 270 and i did that in 1 step with no losses.

[Ovenpaa]

I had a quick look, will have to look again when i have some more time. I am looking at 2 months (if the barrel turns up in time) before i can start shooting this rifle so there is no rush.

I neck 221 fireball cases out to 30 cal in 1 step and they seem fine. I did trash a few when i was adjusting the dies but once it was sorted i havent lost any. It might be different going down, the only thing i have ever necked down is 303 to 270 and i did that in 1 step with no losses.

I will have a go at reducing in one hit when I next have to prep some brass for her, I must admit I don't even go down in one hit from 300 for my 7mm but that is mostly to try and keep neck run out to a minimum on un-fired brass.

Hmmm.... Time for another wildcat I think

[Ovenpaa]

Tried it at last. With a bit of Imperial sizing wax and a smooth action you can neck from .30cal down to .22cal in one go, I tried it both in one hit and in short bump strokes and it worked each way every time. Neck runout was not so bad either considering I used old Fed brass out of the scrap bin.

[Seddo]

good to hear its works for you too.

dont have my 20x47 yet........