Winchester Dynapoint Bulk Pack Water Test

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  • Last Post 12 July 2011
Joshua M. Smith posted this 03 July 2009 

I decided to go out today and test some Dynapoint .22LR in water jugs.

  I'm not aware of what the Dynapoints looked like before, but the ones that I have are in a white bulk pack which is labeled “Winchester Dynapoint.”  I was hoping they'd be as reliable as the Winchester Xpert I'd been using before the supply dried up, but I was initially getting failures to fire on the first strike, having to turn the round 180° to find priming compound in the rim.  One round had left the factory with no priming compound in the rim.  I have found this disappointing.   Note the small dimple.  Compared to other hollowpoint designs I favor, this is neither deep nor wide.   However, the bullet profile leant itself to feeding.  Though I have never had a problem with the Squirrel Sniper feeding anything, folks needing a more feed-friendly profile might take a look at this.   50 yard range”¦   I used my standard milk jug setup, only I used three jugs instead of the standard five jugs I use for centerfire rounds.   Here is the setup.  Earplugs are a good idea, even with rimfire.   A couple notes on the movie:  First, I forgot to zoom in, so please forgive me for that.  I didn't have the milk jugs to repeat the performance, or I would have.  Second, I fired five times, figuring I could get expansion from at least one bullet.   http://s19.photobucket.com/albums/b191/WabashShootist/Guns/Dynapoint%20test/?action=view&current=MOV00008.flv> These are the milk jugs.  They are torn up, but not in much worse shape than standard LRN would have done.   It should be noted that the caps were taken off by me; I was looking for bullet fragments.  None were found.  The bullet lying on the board is one that flattened against the piece of metal and cannot be counted.   This bullet was laying on one of the sawhorses.  There is no expansion, and the only deformation is a “tattoo” from hitting a milk jug, and a bit of damage at the base.  It looks like it may have tumbled a bit after impact.   Overall, I am not impressed.  While in hunting situations placement is key, expansion is also desirable on most game in the United States.  I do not know if this is the same Dynapoint that was originally developed; I would very much hope not.  I would expect more from Winchester's R&R department.    Additionally, it should be noted that, though most rounds were subsonic, a few had a supersonic “crack.”  Though I have yet to get a chronograph, this tells me that the ammo is pretty inconsistent.   I very much hope that Winchester gets its Xpert line back out very soon.  Though it's somewhat dirty to shoot, the terminal performance of the bullets are nothing short of awesome, especially for a bulk pack round.   I am disappointed in this “new” Dynapoint bulk pack.   Josh <>< http://handgunsandammo.proboards.com/

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mike morrison posted this 03 July 2009

look at paco kelly's leverguns forum. he makes a doo dad that allowes you to modify the nose of 22 rf ammo and claims that the bulk pack performance can be improved. the new tool will work for four different sizes to match your bore. also has several punches to modify the nose. this should give expansion. check it out, it may be of help to you. just thought you might like to know. i think it is called an accurizer. good luck mike

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Joshua M. Smith posted this 06 July 2009

Hello,

After writing Winchester and directing them to the report which I duplicated on another board, they replied that my email was being sent to their R&D department. This was Friday, July 3rd.

I got home today, and even being a holiday weekend, I had, in the mail, an ORM-D sticker, postage prepaid, and with an offer to have it picked up.

I am sending it all back to Winchester. Hopefully this will help their future runs.

I can tell right now that Winchester's service is top notch. I wouldn't have expected this quick of a response over a holiday.

Josh

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Ed Harris posted this 07 July 2009

The CCI Subsonic HP is the only standard velocity round I have found which expands reliably from my 4-1/2” Woodsman.  Of the high velocity rounds ordinary CCI Mini Mag HPs did fairly well, but was less accurate and more noisy. Of the Winchester ammos Power Points expanded more reliably than either Dyna-Points or ordinary Super-X HPs, but the Power Point was not consistent until shot from my 6-7/8” High Standard Model B. 

Getting expansion from .22 revolvers is problematic because cylinder gap reduces velocity and any cylinder misalignment causes asymmetrical scrubbing which accentuates initial yaw as the bullet leaves the muzzle.  The same rounds which expand well from the 4-1/2” Woodsman will not when fired even from a 6 inch revolver. In .22 revolvers you are probably better off with solids.

73 de KE4SKY In Home Mix We Trust From the Home of Ed's Red in "Almost Heaven" West Virginia

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billw_willy posted this 20 August 2009

The most accurate 22 RF hunting ammo I have found are Winchester Power Points. I haven't tested any for expansion as accuracy is of first importance. I have Paco Kelly's Accurizer and the dies do make cheaper ammo more accurate by sizing up from .223 to .224 and .225” to fit chambers in rifles and handguns. The nose shapes allow a flat concave flat nose, a large and deep HP and a post HP. I haven't tested these for expansion or for hunting, only accuracy and all Hi-vel and standard vel ammo, 36 and 40 gr, improved in accuracy in several rifles and handguns. Unfortunatly, the nose profiles did not chamber well in repeaters or auto-loaders. I used inside diameter tools to measure diameter of chambers and cylinder throats in revolvers in order to decide which diameter to reform bullets. I used a number of washers on top of the dies to control the bump and depth of the punches. An arbor press would work wonders with these dies.

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billw_willy posted this 06 July 2011

billw_willy wrote: The most accurate 22 RF hunting ammo I have found are Winchester Power Points. I haven't tested any for expansion as accuracy is of first importance. I have Paco Kelly's Accurizer and the dies do make cheaper ammo more accurate by sizing up from .223 to .224 and .225” to fit chambers in rifles and handguns. The nose shapes allow a flat concave flat nose, a large and deep HP and a post HP. I haven't tested these for expansion or for hunting, only accuracy and all Hi-vel and standard vel ammo, 36 and 40 gr, improved in accuracy in several rifles and handguns. Unfortunatly, the nose profiles did not chamber well in repeaters or auto-loaders. I used inside diameter tools to measure diameter of chambers and cylinder throats in revolvers in order to decide which diameter to reform bullets. I used a number of washers on top of the dies to control the bump and depth of the punches. An arbor press would work wonders with these dies.Since then I bought an A-Square arbor press to give me consistent control on nose shapes and diameters with the washers. So far I have no means to test expansion in water as my range has no water source for gallon jugs, besides those are not allowed at my privately owned range and would be bad behavior if another member saw me using them. I may test them in my shop into dry telephone books or use a bullet trap made from 4” PVC pipe 3 feet long stuffed with old towels. I saw the test with Winchester Dynapoints where they penetrated 3 jugs. The main point of Paco's dies is to increase accuracy with less expensive ammo, already have some expensive ammo for matches. My last testing was done in the fall, very little data, got sickly and haven't shot any since then. I'm waiting on fall and cooler weather to start testing again.

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mikld posted this 11 July 2011

I have a Paco Kelly Acu'rzr that I tried on several different .22 lr ammos. In my new Marlin 918T using Blazer ammo, my groups shrank from 1 1/4 inches down to 3/4 inches at 45 yards (45 yards 'cause that's all the room I had). New gun/scope, just getting used to it, and I expect those groups to shrink considerablt too. On other ammo, except CCI Green Tag and some Federal Champion std. velocity, all groups improved. Next trial will be in my T/C Contender Carbine (I'm looking for .5” groups to start with Acu'rzr ammo).

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billw_willy posted this 12 July 2011

I've read many experiences with different ammo but want to know how or what medium expanded the standard vel and hi-vel 22 RF bullets. Also, has anyone tested Paco's dies for expansion into test medium or game.

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JeffinNZ posted this 12 July 2011

Dynapoint used to be marketed by Olin in AU as “Rabbit Ammo". Dimple point bullets are as much use as a chocolate tea pot. Might aswell use a standard RN bullet on rabbits as it will perform the same - POORLY.

Cheers from New Zealand

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72coupe posted this 12 July 2011

JeffinNZ wrote: Dynapoint used to be marketed by Olin in AU as “Rabbit Ammo". Dimple point bullets are as much use as a chocolate tea pot. Might aswell use a standard RN bullet on rabbits as it will perform the same - POORLY.

Jeff I have killed 10s of thousands of American Jackrabbits (Lepus californicus texiana) with round nose 22 bullets of just about every manufacture.

I just didn't know they performed poorly.

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Mike H posted this 12 July 2011

JeffinNZ wrote: Dynapoint used to be marketed by Olin in AU as “Rabbit Ammo". Dimple point bullets are as much use as a chocolate tea pot. Might aswell use a standard RN bullet on rabbits as it will perform the same - POORLY.

I am with Jeff, on this one. one thing to consider, apart that the European wild rabbits are tough to anchor, they mainly live in burrows and if not dropped on the spot, they get down their holes and are lost. It was years ago in Australia that it was on the market, our little shooting group at the time, felt that it had been designed by a rabbit. Mike.

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