I was hoping to get some advice on how to resolve the isues I am having shooting Aguila 22LR Super Extra ammo in my Ruger 22/45.
The gun was purchased new by me from Grab a Gun in late January. The only modifications to date are a Volquartsen Target Trigger (not the kit, just the trigger), and a Tandemkross Haloring. I have five Ruger MkIV magazines, two stock and three with Volquartsen mag springs and buttons. I keep the gun clean but not overly so, and lube the bolt as per the Ruger manual. I’ve cycled all the mags up and down at least 100 times, dry.
I’ve only shot two types of ammo: CCi Minimags and Aguila Super Extra. The CCi (CCi Mini Mag 22LR Copper Plated Round Nose) I picked up from TargetSportsUSA, two boxes of 500. It is labeled at 1,235 fps. I bought the Aguila (22 Long Rifle - Aguila Super Extra 40 Grain LRN - 50 Rounds) from Velocity Ammunition. The Aguila box shows 1,130 fps.
I’ve been to the range 6 times so far, and have 572 rounds through the gun, almost all with CCI. The CCi runs perfectly; the Aguila is basically unusable.
Every time or almost every time I attempt to shoot a mag of Aguila, I get a misfire, misfeed, or fail to eject. When the Aguila does fire, the recoil seems very soft to me, relative to the CCI ammo. This happens across all my magazines, not just one. They all fail to function with the Aguila; the CCi runs perfectly. Out of my order of 1,000 rounds, I've tried two different 50 round boxes of the Aguila picked at random. It all seems to work the same - i.e. not at all well.
I was wondering if maybe the Aguila ammo was too big to fit in the chamber, so I checked SAAMI (SAAMI Z299.1 – 2018) for “22LR Sporting”. There, the cartridge diameter is listed as 0.2270. I took my digital caliper, and got an average diameter of 10 rounds for the Aguila of 0.2241”. The average of 10 rounds of CCi was 0.2240. So I don’t think it’s the case diameter? I did a plunk test with a sample of both ammo. Both Aguila and CCI plunked identically, slithering into the chamber with the same motion. Based on this, I guess the chamber+Ammo are probably to specification.
I looked at the extractor edge on the cases, since my most recent session included two FTE with the Aguila. Examining both, the edge of the CCI might be more square than the Aguila, but there is not a lot in it. Finally I was thinking the Haloring might be the problem, since it adds to the mass of the bolt assy. So I weighed the bolt at 151 grams, and the Haloring at 12 grams. I’m unsure if 8% additional mass would slow the bolt down all that much, to affect feeding, but I don’t know.
The last thing I plan to do is try one of the Volquartsen bolt upgraded kits with the improved extractor and firing pin, since problems with extraction seem to be a part of my issues with the Aguila. So I ordered one of those from VQ; it’s on the way.
Is there anything else I should try before I send up the white flag on the Aguila?
The gun was purchased new by me from Grab a Gun in late January. The only modifications to date are a Volquartsen Target Trigger (not the kit, just the trigger), and a Tandemkross Haloring. I have five Ruger MkIV magazines, two stock and three with Volquartsen mag springs and buttons. I keep the gun clean but not overly so, and lube the bolt as per the Ruger manual. I’ve cycled all the mags up and down at least 100 times, dry.
I’ve only shot two types of ammo: CCi Minimags and Aguila Super Extra. The CCi (CCi Mini Mag 22LR Copper Plated Round Nose) I picked up from TargetSportsUSA, two boxes of 500. It is labeled at 1,235 fps. I bought the Aguila (22 Long Rifle - Aguila Super Extra 40 Grain LRN - 50 Rounds) from Velocity Ammunition. The Aguila box shows 1,130 fps.
I’ve been to the range 6 times so far, and have 572 rounds through the gun, almost all with CCI. The CCi runs perfectly; the Aguila is basically unusable.
Every time or almost every time I attempt to shoot a mag of Aguila, I get a misfire, misfeed, or fail to eject. When the Aguila does fire, the recoil seems very soft to me, relative to the CCI ammo. This happens across all my magazines, not just one. They all fail to function with the Aguila; the CCi runs perfectly. Out of my order of 1,000 rounds, I've tried two different 50 round boxes of the Aguila picked at random. It all seems to work the same - i.e. not at all well.
I was wondering if maybe the Aguila ammo was too big to fit in the chamber, so I checked SAAMI (SAAMI Z299.1 – 2018) for “22LR Sporting”. There, the cartridge diameter is listed as 0.2270. I took my digital caliper, and got an average diameter of 10 rounds for the Aguila of 0.2241”. The average of 10 rounds of CCi was 0.2240. So I don’t think it’s the case diameter? I did a plunk test with a sample of both ammo. Both Aguila and CCI plunked identically, slithering into the chamber with the same motion. Based on this, I guess the chamber+Ammo are probably to specification.
I looked at the extractor edge on the cases, since my most recent session included two FTE with the Aguila. Examining both, the edge of the CCI might be more square than the Aguila, but there is not a lot in it. Finally I was thinking the Haloring might be the problem, since it adds to the mass of the bolt assy. So I weighed the bolt at 151 grams, and the Haloring at 12 grams. I’m unsure if 8% additional mass would slow the bolt down all that much, to affect feeding, but I don’t know.
The last thing I plan to do is try one of the Volquartsen bolt upgraded kits with the improved extractor and firing pin, since problems with extraction seem to be a part of my issues with the Aguila. So I ordered one of those from VQ; it’s on the way.
Is there anything else I should try before I send up the white flag on the Aguila?