Well, get to it then!

I want to know how this stuff'll work in one of the more common self shuckers!!!!!!
Let's try this again

...(attempted posting earlier with no success).
Finally got together with the Springfield National Match M1-A rifle/owner. I found a cleaner that claimed effectiveness with cupro-nickel bullets, so off we went (I had to do the rifle cleaning

) The owner had this rifle "skim" bedded and wanted to test it with his "sniper" load, during which we'd test the German surplus at the same time.
One downfall of this sniper system was it's fairly periodic requirement for rebedding (a real maintenance hassle, which is one reason why it was dropped as a sniping system). It's made a comeback due to the War(s) but is being replaced by more durable/modern systems.
Conditions: 15-20 kph wind, 10 0'clock direction, Temp approx -10 C.
All groups are 3 shots, bipod front support, sandbag rear. 100 meters IRON sights.
First, the "control"/Sniper" load group with the ammo of known accuracy was .78". Looks like that bedding job is fine!
The German ammo grouped 1. 3.56" (2 shots in 1", 1 flyer). 2. 1.35" 3. 2.3" 4. 2.8" 5. 3.25" Average= 2.65". Definately not as good as seen with previous rifles on this thread. I thought that maybe my aging eyes may be a factor in these worsening groups, so I shot another group with the "control" ammo and got .51"!
A note on cleaning: A websearch found a cleaner claiming effectiveness on cupro-nickel jacketed bullets on a UK website. Although no mention of this is made on the label of the product. A call to the US distributor confirmed the website claim, so I picked up some "Wipe-Out" and "wipe-out accelerator" (a chemical catalyst that makes it work quicker) from a local dealer.
This stuff is a foam-type cleaner that resembles the bubbles from dishwashing soap (and even smells like it). Very messy. It "foamed" outside the bore (despite closing the bore to prevent this from going onto the bedding/into the action). I don't like having potentially toxic chemicals all over the place, the more containment the better. SIDEBAR: I wonder if gun owners get more certain types of cancers than the general population because of our exposure to various solvents. Something we should watch out for!
Anyway, it SEEMED to work in the above rifle. BUT, I used this cleaner in another rifle and I decided to check afterwards by following up with one of my normal cleaners. Lo and behold, patches came out black/dark grey when according to previous instruction, the bore should have been clean. Beware.