Ammo grain and accuracy in SP-01

[Chef1515]

How much do these go hand in hand at say 10 yards or so? I bought some 147 grain speerman, and some 150 grain synthetic federal ammo as I read they were good but after doing more googling it says 124 grain is the best for czsp01? Should i habe any problems at 7.5 to 10 yards? Im really just using this as range ammo to practice grouping shots and wotk on techinique as im a new shooter.

[skin]

I have had great success with anything between 90 grains and 160 grains. As far as twist goes, as long as it will stabilize the bullet you should find what you want.

[Chef1515]

I have had great success with anything between 90 grains and 160 grains. As far as twist goes, as long as it will stabilize the bullet you should find what you want.

And another newb question, what do you mean by twist?

[Wobbly]

The barrel's twist rate is optimized for 124gr ammo. However, any good ammo will have excellent results in an SP01.

Due to the short lead on CZ barrels/chambers, it's important that your take your barrel with you when buying ammo in excess of 124gr. Especially if the ammo is not traditional RN or FMJ. If 3 or 4 rounds of the new-to-you ammo will drop all the way into the naked chamber and then spin freely, it's generally considered safe for use in the CZ.

All 9mm chambers are NOT alike. And neither is the ammo. We occasionally hear from a member who buys a huge ammo lot, only to find out it won't chamber properly, and thus can't be used. These hiccups typically occur with conical FP and other fancy ogive shapes they don't have in eastern Europe.

Hope this helps.

[Vinny]

The barrel's twist rate is optimized for 124gr ammo. However, any good ammo will have excellent results in an SP01.

Due to the short lead on CZ barrels/chambers, it's important that your take your barrel with you when buying ammo in excess of 124gr. Especially if the ammo is not traditional RN or FMJ. If 3 or 4 rounds of the new-to-you ammo will drop all the way into the naked chamber and then spin freely, it's generally considered safe for use in the CZ.

All 9mm chambers are NOT alike. And neither is the ammo. We occasionally hear from a member who buys a huge ammo lot, only to find out it won't chamber properly, and thus can't be used. These hiccups typically occur with conical FP and other fancy ogive shapes they don't have in eastern Europe.

Hope this helps.

+1 ^^^^^As usual, great advice from Wobbly!
My go-to practice ammo is S&B 124. It's at the hotter side of standard pressure and my CZ's love it.  I even use their JHP's that are priced well enough to practice with and have good penetration/expansion from tests I've seen.
The test targets that come with CZ's (I think they still do?) most often have S&B 124 as the test ammo used. Not surprising I suppose, it's good Czech ammo.   

[Chef1515]

The barrel's twist rate is optimized for 124gr ammo. However, any good ammo will have excellent results in an SP01.

Due to the short lead on CZ barrels/chambers, it's important that your take your barrel with you when buying ammo in excess of 124gr. Especially if the ammo is not traditional RN or FMJ. If 3 or 4 rounds of the new-to-you ammo will drop all the way into the naked chamber and then spin freely, it's generally considered safe for use in the CZ.

All 9mm chambers are NOT alike. And neither is the ammo. We occasionally hear from a member who buys a huge ammo lot, only to find out it won't chamber properly, and thus can't be used. These hiccups typically occur with conical FP and other fancy ogive shapes they don't have in eastern Europe.

Hope this helps.

I think its helping. All in all i may not get perfect on target. Ive run a box of each and had no issues with rounds not chambering or firing. I wont be doing damage to the barrel with these brands correct?  I have some id like to run through.

[skin]

 Twist is rate of spin of the rifling in the barrel, generally expressed as a ratio, 1 in 9 twist. In most firearms it is a compromise to cover most weights of bullets made in that caliber.

[Joe L]

Chef1515--If the 147 and 150 gr ammunition chambers OK per Wobbly's plunk check above, then shoot it in your pistol.  Then buy some 124 or 115 gr FMJ (full metal jacket) ammo, or example Federal or Remington UMC and try those.  You will see a difference in where the groups from one ammo hit the target compared to your aim point.  The heavier rounds like 147 and 150 will usually hit the target a few inches higher than the lighter 115 and 124 gr ammunition.  This is because the recoil and velocities are different.  They will feel different to you as you shoot them also, with the heavier ammo feeling a little softer to shoot than the 115, for example. 

When you find some ammunition that you like and which is readily available and not too expensive, stay with it while you learn to shoot well and become comfortable with the pistol.  If you change ammo often, you will never be sure if the groups on the target are moving because of what you are doing, or because of the change in ammunition. 

So, just be very careful and be safe and cautious, take your time, enjoy every shot, learn something from every shot, and don't get frustrated.  Shooting a pistol well requires attention to detail and consistency.  Usually the pistol and the ammunition are consistent and repeatable, and it is the shooter that has changed something when the shooter sees variations in the results. 

We were all new shooters once. 

Joe