All posts by T3mppu

Vares Cup SRA III / 2015

Third component match of Vares Cup 2015.

Everything did not go so well, but fortunately the long rifle stages were successful and gave enough points to compensate for the malfunctioning shotgun and the lack of pistol skills.

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IPSC Semi Auto Open Division Rifle Build

Last season (2014) I decided to try shooting in Open Rifle Division and started more detailed specification (i.e. spreadsheet) on will be in the rifle.

Initial specs were pretty simple with at least 15 inch free float and 1-6x variable scope, but soon came more complicated. First I was thinking about a carbon float but with some insights from an experienced gunsmith and thorough browsing through the web I came to conclusion that a slim keymod float would be the choice:  keymod is mostly holes –> light, but enables accessories and slim profile (1½”) gives better grip and adds to lightness, still being stiff enough. At the moment I couldn’t find many ways to acquire 15+ inch slim keymods to Finland so I went with Leapers UTG in FDE and thus started acquiring also the magpul parts in FDE.

I had grown fond of Magpul MIAD grip (with the largest back piece) in my two other rifles (Standard and Minirifle) so that was the obvious choice for this build too. The A2 stock was also a little clumsy on some specific stages and adjustable stock would have had it’s place. I was wondering between Commercial- or MilSpec, when I found out that Commercial stock can be extended further than the MilSpec enabling a setting for proper eye-relief in both prone and standing positions as head is usually on more forward position on prone and some other specific shooting positions (more about this on a later post). Combined with a proper pull length for my physique/shooting style, the longer setting has its place (at least when shooting with t-shirt instead of plate carrier which would add to the pull length). So the stock was selected to be Magpul CTR Commercial Spec.

Status of the Open Division build with standard division rifle for scale
First parts have arrived! (current standard division rifle for scale)

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Tuning unused USGI Magazines

I recently acquired some USGI style magazines. The magazines were Brownells branded and “3rd generation” (light brown colored and non-tilting follower). One note about the followers was that the “top round” bulge is on the other side than in magpuls and my previous usgi magazines (gen1 and gen2)

I ran into some problems while test firing the magazines in my tuned competition rifle: the action made some rounds stood up and collision to inside corner of the barrel extions and bolt slipped to the rim. This of course happened on stage 2 in a small weekly competition ( http://youtu.be/ISoByoDOwyY?t=16s )

jam with un-modified and un-used usgi mags
jam with unmodified and unused USGI mags

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Pikijärventie SRA 2015 (gallery included)

Special Squad took part in Pikijärventie 2015 which was an SRA competition with 7 stages. The stages were well built and adequately challenging without being too complicated or memory games. The theme was “Operation Overlord” (Allied code name for Battle of Normandy). Stage descriptions in Finnish, with pictures

Stage 1 was a “sniper stage” with targets from 200 to 500m and allowed to be shot with a larger caliber rifle including a proper scope. The used targets were Jasters, a type of electronically functioning (reset, set up/down) large metal sheets. The organizer provided a .308 AR with a Leica scope, free of charge. Only one of us was able to shoot all 6 of the targets (200, 300, 2×385 and 2x500m) with the help of his own and familiar AR-10..

Stage 2 had a tank prop and it was nice and fast shooting with some close-up papers and 6 Jasters in a little distance. Stage 3 was a pistol stage with some paper targets and four poppers that were required to be shot strong hand only. Stage 4 had a very slow sledge that was activated from front of the stage, by the sandbags.

Stage 5 was nice variation from most of the stages we have shot. It simulated being stuck in a tree with a parachute! On stage 6 there was a Sig made AR-15, provided by organizer and readily set up with four rounds in the mag. In start you had to rack, shoot two papers, make safe and leave the rifle, continuing with pistol. Stage 7 was sort of a run and gun with shotgun, requiring minimal 16 shots.

We had two team entries, one for open (avoin) and one for standard (vakio). In combined results the open team won and standard team came second. Individually we won the lady category, had second on standard division and third on open.

IMG_0267
prizes acquired by Special Squad

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NEA15-22 part VIII – A functioning minirifle!

I got a new Chiappa firing pin which (as described in previous posts) is not very good as it is: fat striker head, does not protrude for proper contact with the hammer. So off to the range for test fire and some “gunsmithing” i.e. filing the pin into the place.

From top: the enchanded (broken) pin, new Chiappa pin and the old (broken) Chiappa pin
From top: the enchanded (broken) pin, new Chiappa pin and the old (broken) Chiappa pin
firing_pin_evolution
Firing pin evolution: Some light strikes with the fat pin, going down to the sharpened pin and also some duds

In the beginning I got a lot of Failure-to-Fires (FTF) which was sort of a good thing as I  noticed that there was some problems with the extraction of rounds that had been deformed, i.e. the non-fired rounds extract fine, but the ones that have been hit with the striker did not always extract.

It still appeared that there might be some contact between the weight behind the bolt and possibly the hammer was also touching the slide rail (wear on the side of the hammer). So I once again filed the weight and also did a little polish/dremel on the bolt rail where the hammer might be touching.

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Minirifle Finnish Championship 2015

Special Squad took part in Finnish IPSC Minirifle Championships as match officials, providing significant work contribution in form of a CRO, two ROs and one general official.

As officials we shot in the pre-match and thus took some handicap: when in pre-match, besides shooting the squad must also do all the necessary stage work and there are always some differences on the found ways to solve the stage challenges. For example on stage 2 we did not shoot the 10cm plates from prone (the stage was designed this way, but the main match showed that there were some faults on prop placement, allowing the prone position) and on stage 10 we actually stood normally on the start, instead of putting the barrel into the hole (this was apparently allowed in the main match).

Two of us shot with the NEA15-22 which was tuned as described in the NEA15-22 saga and we had zero failures, i.e. all rounds fired and no ejection problems. There was 12 stages and minimum rounds per shooter was around 165, actual count was of course higher.

Stage descriptions

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NEA15-22 part VII -yet enough?

While testing the DIY Brass Catcher, there again was some failure to fires, so I took the rifle apart for checking. It seemed that there might still be too much material on the recoil spring guide / bolt weight.. So I machined (read: dremeled) off some more.

nea15-22_bolt-weight_mk3
from left: previous and new protrusion, top: markings that had appeared since last session and the new modifications “painted”, bottom: current state of material

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