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thompson center tcr

dirtcop
I have a tcr with double trigger and also a "mag" tcr. I purchased the double trigger with a .222 barrel and a 7mm barrel. Is it safe to shoot the 7 mm on the "non mag" receiver? The mag has a .338 on it.
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  • dirtcop
    I'm an advent fan of the tcr and have several. just acquired one in a 257tcu. can anybody tell me something about this caliber and what it is good for. I was told that it is a 223 necked up for a 25 cal. bullet. true?
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  • gskyhawk
    not sure but the 7mm tcu is a 223 necked up to 7mm and is a lot of fun, so I would guess that your 257 tcu could be based on the 223 also I'll have to look it up and see what the books say
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  • tlen
    I don't see a " 257tcu" listed nor have I ever heard of one. http://www.foxridgeoutfitters.com/section.cfm?section=16
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  • nononsense
    25 Ugalde (25 TCU)

    Historical Notes:

    The 25 Ugalde, also known as the Thompson/Center Ugalde, was developed by Wes Ugalde of Fallon, Nevada, in 1987. Dean Grennell, then managing editor extraordinaire of Gun World magazine, also had a hand in the original iteration. The cartridge, like other TCU cartridges, is based on the necked up and Improved 223 Remington case. Results of the original testing by Dean Grennell were carried in the August, 1988 issue of Gun World. He used a Thompson/Center single shot pistol with a 14 inch heavy barrel made up by Wes Ugalde.

    General Comments:

    The 25 TCU is intended for metallic silhouette shooting, but would also make a good varmint cartridge at moderate ranges. There is a good selection of 25 caliber bullets available in weights from 60 to 120 grains. By the standard of today, ballistics are not spectacular, but quite adequate for the intended purpose. Dean Grennell reported less than minute of angle groups. It is in about the same class as the old 25-35 and would be marginal for deer. RCBS can furnish reloading dies, and no special case forming dies are required.


    Source: Cartridges of the World



    25 Ugalde (25 TCU) Reloading Data

    Bullet (grs.) Powder / (grs.) MV ME Source
    75 HP H-335 / 26.2 2455 1010 n/a
    75 HP H-335 / 27.2 2680 1195 n/a
    75 HP BL-C2 / 27.9 2280 860 n/a
    75 HP W-748 / 28.3 2490 1030 n/a
    75 HP RL-12 / 28.0 2530 1070 n/a
    90 SP AA-2520 / 24.0 2455 1205 n/a
    100 SP H-335 / 26.2 2365 1245 n/a


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