I'm relatively new to the Forum and was heavily involved on Glocktalk and did shoot alot of GSSF.......actually sponsored (4) teams both Amateur and Master. I'm going to give Steel Shooting a whirl and did send in for my USPSA card and now have a number. I've had two hips replaced and I yield to the younger bodies and eyes,but hope to enjoy the sport and try to test my skills and develop more.
To get to the point......I've had at one time just about everything in length in the 9,10 and .40 caliber models and have settled on playing with two model 17's....Bomars on the back with .090 fronts.....extended mag.and slide releases and a 3.5#connector that has been polished....also a lighter striker spring. Ohhh.....a little skate tape on the grip.
I have seen some good times with a stock 17 as outlined above in GSSF.....in fact the best time last year was at Fort Smith for Amateur Civilan ...a 53.0 by Charlie Vanek and that was I believe his first GSSF match.Mr.Vanek was a pleasure to talk to and we discussed....what else triggers and glocks.
I'm learning to draw and reload and feel that if I eliminate the variables......by shooting one pistol.....I might actually get better.....shooting GSSF I could use a 17 and as an Amateur shoot....Open,Master Stock,Competition,and finally Amateur Civilian.GSSF gives you an opportunity to win two ways......skill and luck.....I have been luckier than skillfull and year before last took (5) model 17's home.
I guess I'm being wordy in saying that the 17 will give you more flexibility and if you do win some 17's.....you may decide to convert one to an open gun......looks like most use the 17 platform. goodluck