Rock Island Armory Shipping .22 TCM Rifles

[trelliswires]

http://www.theoutdoorwire.com/story/...134617f3rnrwn8

[johno]

Interesting rifle & cartridge combination, what the price be of one?

Johno

[ab_bentley]

About $500 retail.

Adam

[260Ackley]

I look forward to a report if anyone gets one. I wonder if it could keep pace with the hornet and lil gun powder? Then we have to neck it down to 20,and 17.

[M595NUT]

Originally Posted by 260Ackley

"Then we have to neck it down to 20,and 17."

Those were exactly my first thoughts. Bet someone's already done it...

[ray h]

When the cases were announced I bought 1600, I did a 20 caliber. I made the neck longer but put a 40* shoulder so the case capacity was about equal. Call it the 20 Boomer. Since Eddie had the 20 Jav Imp reamer and the head space ga from the 17 Boomer I did several years before. It was a quick turn around. Case has the capacity close to a 20 AH. I never chrono it but it shoots very good. I will say the brass I have is very strong. At 72 I make it a rule NEVER reload from memory. Well I did, put together a test load and messed up. Load should have been 10gr 296, I used 12 gr. Luckily I have a good gunsmith and it was a Kiff cone nose bolt in a Rem SA, I had .012 mini belt on the case and primer was flatten but still in tact. When I made the 17 Boomer I just picked a length, actually meant to do a 1.00" OAL but came out 1.025 OAL. The 20 Boomer measurers the same, by luck. Great little case, it took me something like 16-18 steps to make the 17 Boomer from 223 but using the TCM brass it was 8 or so steps to make the 20 Boomer.

[Daryl]

Originally Posted by 260Ackley

I look forward to a report if anyone gets one. I wonder if it could keep pace with the hornet and lil gun powder? Then we have to neck it down to 20,and 17.

It would be a fun gun - with the potential for better accuracy due to the case shape - however, my current CZ Hornet beats that round's 40gr. at 2,800fps by 400fps using Hodgdon's data. Whether this due to tight bores or tight chambers - I don't know, just happy that it does happen. My first CZ Hornet was 100fps faster than my current one, even more accurate (1/10" better), but using higher capacity RP brass.
So- this new round might not match the Hornet, but - it shows promise and might be WONDERFUL with Lil'Gun powder, just as the .218Bee already is. Might have similar capacity to the Bee - if so, it will SHINE, especially in a Ruger #1.

[Daryl]

Ray - BobD and I have been using more 296 than that in the Hornet - with perfect results and no adverse pressure signs. Hornady lists11.0gr. with 40gr. bullets - used to list 12gr. or so in normal Hornets - I guess this new case shape does not handle this powder well? I was hoping it would do like a .218Bee - maybe not.

[ray h]

Daryl, to be honest, I haven't gone back and revisited the case. I need to do that but I have some others I want to finish first. I was in a hurry to fire form some cases 3 times to send off for a die (which I've since received from Whidden). I should be checking it out a few weeks. The first fire forming loads I tried were under a half inch at 100 yds but I didn't chrono them. I'll check formed case volume with some h380. Maybe the old grey cells are playing tricks again.

[ray h]

Daryl- I did a quick using H380. The 22 TCM holds about 11.7gr to base of neck. The 218 Bee holds 14.0gr to base of neck.